HomeMy WebLinkAboutBID - 5839 ASPHALT OVERLAY PROJECT 2004 (6)Project Specifications – Page 1 of 39
REVISION OF SECTION 104
TRAFFIC AND PARKING CONTROL
Section 104 of the Standard Specifications is hereby revised as follows:
Subsection 104.04 shall include the following.
It shall be the Contractor's responsibility to clear parking from the streets when such parking will interfere
with the work. Prior to work that requires the street(s) to be closed to parking and/or traffic, the street(s)
shall be posted for "NO PARKING". The placement of these signs shall take place at least 24 hours prior
to the commencement of work and shall clearly show the type of work, and the day, date and times that the
message on the sign is in effect. (For example, if a street is to be patched on Wednesday, July 2, the street
shall be posted no later than Tuesday, July 1, by 7:00 a.m. with a sign that reads similar to "NO PARKING,
WEDNESDAY, JULY 2, 7:00 A.M. TO 6:00 P.M., PATCHING.) See sample "NO PARKING" sign. “NO
PARKING” signs shall remain in place until the street is opened to traffic and all clean up operations
completed.
All information on the "NO PARKING" signs, with the exception of the date, shall be in block letters
permanently affixed to the sign. Any information added to a sign, such as dates, shall be clearly legible
and written in block style letters. The ANO PARKING@ signs shall be in effect for one or two days only.
Any work done by the Contractor without traffic control will not be paid for under the terms of this
Contract. The Contractor will not be paid for traffic control costs incurred during Contractor caused
delays.
At or near the end of each work day, a representative of the Contractor, the Traffic Control Supervisor, and
the Engineer will meet to discuss the progress of the work and the placement of traffic control devices
including "NO PARKING" signs. Any necessary adjustments shall be made. The Contractor shall also
review at this time with the Engineer the proposed means of handling parking and traffic control for
upcoming work. It is the responsibility of the Contractor to minimize any inconvenience to the public as a
result of this work.
At the above referenced meeting, the quantity of traffic control devices used that day shall be agreed upon
by the Contractor and the Engineer. The Contractor shall utilize forms approved by the Engineer for the
tabulation of Traffic Control Devices utilized.
The Contractor shall maintain access at all times to all businesses within the project.
Any changes in the traffic control, including additional signs, barricades, and/or flaggers needed in the field
shall be immediately implemented as directed by the Engineer.
The cost for traffic control is covered in "Revision of Section 614, Traffic Control Devices" found herein.
Project Specifications – Page 2 of 39
NO
PARKING
Wed July 7
7:00 AM - 6:00 PM
PATCHING
Project Specifications – Page 3 of 39
REVISION OF SECTION 105
COOPERATION BETWEEN CONTRACTORS
Section 105 of the Standard Specifications is hereby revised as follows:
Subsection 105.07 shall include the following:
Concrete construction and/or reconstruction operations at intersections may involve the destruction and
replacement of traffic signal loop detectors. The existing traffic signal loop detectors shall be removed by
the contractor at no additional cost. New loop detectors may be installed at other intersections where they
do not now exist. New and replacement loop detectors will be installed by the City Traffic Division. The
Contractor shall cooperate with the schedule of this work to insure the timely installation of new loop
detectors.
Also, the Contractor shall coordinate with the City Traffic Division to insure that any cleanup required after
the installation of the loop detectors will be completed before concrete placement operations begin.
Project Specifications – Page 4 of 39
REVISION OF SECTION 105
INSPECTION OF WORK
Section 105 of the Standard Specifications is hereby revised as follows:
Subsection 105.11 shall include the following:
The Contractor shall keep the Engineer informed of his future construction operations to facilitate
scheduling of required inspection, measuring for pay quantities, and sampling. The Contractor shall notify
the Engineer a minimum of 24 hours in advance of starting any construction operation that will require
inspection, measuring for pay quantities, or sampling. Failure of the Contractor to provide such notice will
relieve the owner and the Engineer from any responsibility for additional costs or delays caused by such
failure.
Inspection of the work or materials shall not relieve the Contractor of any of his obligations to fulfill his
contract as prescribed. Work and materials not meeting specifications shall be corrected and unsuitable
work or materials may be rejected, notwithstanding that such work or materials have been previously
inspected by the Engineer or that payment therefore has been included in the progress estimate.
Project Specifications – Page 5 of 39
REVISION OF SECTION 105
MAINTENANCE DURING CONSTRUCTION
Section 105 of the Standard Specifications is hereby revised as follows:
Subsection 105.14 shall include the following:
The roadway area, including curb, gutter, and sidewalk, adjacent to and through the construction area shall
be cleaned of debris by the Contractor at the earliest opportunity, but in no case shall the area be left
uncleaned after the completion of the day's work. It shall be the Contractor's responsibility to provide the
necessary manpower and equipment to satisfactorily clean the roadway area.
The Contractor shall utilize a combination of pick-up brooms, side brooms and/or other equipment as
needed to clean the streets. All sweeping and clean up equipment shall be approved by the Engineer prior
to the commencement of work.
The Contractor shall maintain the streets during the construction process as prescribed above.
If a street requires additional sweeping by City forces, the Owner shall deduct from compensation due the
Contractor sufficient funds to cover the Owner's cost to provide said service.
All cost of maintaining the work during construction and before the project is accepted will not be paid for
separately, but shall be included in the work.
REVISION OF SECTION 107
PROTECTION AND RESTORATION OF PROPERTY AND LANDSCAPE
Project Specifications – Page 6 of 39
Section 107 of the Standard Specifications is hereby revised as follows:
Subsection 107.12 shall include the following:
The fact that any underground facility - sprinkler systems, utility services, etc. - is not shown on the plans,
details or construction documents shall not relieve the Contractor of his responsibilities as provided for in
the Contract. It shall be the Contractor's responsibility, pursuant thereto, to ascertain the location of such
underground improvements which may be subject to such damage by reason of his operations.
Any pruning of vegetation shall require the written permission of the property owner and/or the Engineer.
If the area to be repaired is five (5) inches or less in width, the Contractor shall clean the area of all debris
(i.e. concrete, road base, etc.) to a minimum depth of four (4) inches, prepare all edges to be clean and
vertical, and place (see below) and compact topsoil. The topsoil shall be compacted utilizing a hand
operated roller or other method approved by the Engineer.
For concrete repair locations, the placement of topsoil (backfill) shall be completed within two (2) working
days of the placement of the concrete.
The topsoil shall consist of loose friable loam reasonably free of admixtures of subsoil, refuse, stumps,
roots, rocks, brush, weeds, heavy clay, hard clods, toxic substances or other material which would be
detrimental to the proper development of vegetative growth. The material to be utilized shall be approved
by the Engineer prior to placement.
The topsoil shall be in a relatively dry state and placed during dry weather. The topsoil shall be fine graded
to eliminate rough and low areas and ensure positive drainage. The existing levels, profiles and contours
shall be maintained.
If any portion of the area to be repaired is greater than five (5) inches in width, the Contractor shall clean
and prepare the area along the entire length of the repair location as stated above to a minimum of one (1)
foot, place sod over the entire area, water once, and notify the property owner in writing of the nature of
the work that has taken place and that the sod will be watered only once.
If the area to be repaired is only damaged on the surface, the Contractor shall remove the damaged areas of
sod to a depth that will allow new sod to be placed, place new sod, water once and notify the property
owner in writing of the nature of the work that has taken place and the fact that the sod will be watered
only once. The minimum overall width of the area to be sodded shall be one (1) foot.
For concrete repair locations, the placement of sod shall be completed by the end of the first working day
of the week following the placement of the concrete.
Sprinkler systems - Sprinkler systems designated for relocation shall be capped off at the limits of
construction and protected from damage by the contractor. Sprinkler heads shall be salvaged and
stockpiled on each property for use when reconstructing the sprinkler systems.
REVISION OF SECTION 107
PROTECTION AND RESTORATION OF PROPERTY AND LANDSCAPE
Project Specifications – Page 7 of 39
Sprinkler systems damaged outside of the construction limits as a result of construction operations shall be
replaced at the Contractor's expense, within three (3) working days from the date of damage. In areas
where the Engineer directs new work or the reconstruction areas require grade adjustment, the placement of
topsoil, sod and sprinkler relocation will be provided by the City under separate contract.
All landscaping that is damaged due to construction operations shall be replaced by the Contractor at his
expense unless a written waiver is obtained from the property owner and submitted to the Engineer. Re-
sodded lawns shall be watered once by the Contractor.
All costs for protecting and restoring landscaping and lawns shall be considered a subsidiary obligation of
the Contractor in connection with the various items of the Work, and no measurement or payment shall be
made separately for the protection and restoration of landscaping and lawns. All restoration of landscaping
and lawns damaged by construction operations, other than concrete repair, shall take place within three (3)
working days from the date of damage.
In areas where the Engineer directs new work or the reconstruction areas require grade adjustment, the
placement of topsoil, sod, and sprinkler relocation will be provided by the City under separate contract.
All labor, materials, tools, equipment, incidentals, and work involved in protecting or repairing
underground facilities shall be considered incidental to the work being done and shall not be measured and
paid for separately.
REVISION OF SECTION 108
LIMITATION OF OPERATION
Project Specifications – Page 8 of 39
Section 108 of the Standard Specifications is hereby revised as follows:
Subsection 108.04 shall include the following:
The work shall be completed within the following calendar months:
JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN
All Work is to be complete in thirty-five (35) working days.
Subsection 108.06 shall include the following:
A schedule of work must accompany any bid, and shall include number of working days per area to
complete all unit work items covered by the contract. Vicinity maps of each area are included in Section
03500, Project Maps. The schedule should take any priorities into consideration. The schedule should also
include projected start and end dates. Individual street quantities are described in Section 02500, Quantity
Estimates.
Prior to award, mutually acceptable milestones shall be determined by the Contractor and the City based on
the schedule of working days discussed above.
Subsection 108.07 shall include the following:
Failure to meet the agreed upon milestones or fully complete the project in thirty-five (35) working days,
shall result in damages assessed against the Contractor.
At the City’s option, liquidated damages in the amount of $1000.00 per day may be retained from any
monies due the Contractor, or the City may retain an additional contractor(s) to complete the work, or
portion thereof, and retain any costs incurred above and beyond the bid prices of the Contractor from any
monies due the Contractor in lieu of liquidated damages.
REVISION OF SECTION 201
CLEARING AND GRUBBING
Project Specifications – Page 9 of 39
Section 201 of the Standard Specifications is hereby revised as follows:
Subsection 201.03 shall be amended to include the following:
When any tree roots are encountered during construction operations, the Contractor shall notify the
Engineer prior to any root removals. The Engineer and the City Forester's representative shall then make a
determination regarding removal.
Tree roots shall be removed with a sharpened, sanitized saw, cut orthogonally to its longitudinal axis as
closely as practical, to leave the freshly cut root surface in a clean and smooth condition. Axes or other
blunt objects shall not be used to cut tree roots.
Where it is anticipated that tree roots may be encountered, great care shall be taken by the Contractor to
prevent any damage to the roots with tools or equipment.
All costs for removing tree roots shall be considered a subsidiary obligation of the Contractor in connection
with the various items of the Work, and no measurement or payment shall be made separately for the
removal of tree roots.
REVISION OF SECTION 202
GRINDING AND SURFACE PREPARATION
Project Specifications – Page 10 of 39
Section 202 of the Standard Specifications is hereby revised as follows:
Subsection 202.05 shall include the following:
The intent of this specification is to specify materials and methods for the grinding of existing pavement sections to
remove the pavement to a specified depth, the removal and disposition of the ground material, and the preparation
of the surface of the base material disturbed by the grinding process. All workmanship and materials shall be in
accordance with this specification.
All concrete marked for repair within areas marked for grinding shall be repaired prior to commencement of the
grinding.
The Contractor shall provide a smooth surface suitable for the installation of new pavement to follow. The finished
surface shall be free from gouges, grooves, ridges, sooting, oil film and other imperfections of workmanship. The
completed ground surface shall have a uniform textured appearance. It is the intent of this specification that the
finished cross section of the roadway will be improved to eliminate excessive crown, excessive lips at the gutter pan
areas and that the overall ride quality of the roadway section will be improved. The existing pavement shall be
ground to the depth specified. Allowable tolerance for the pavement removal shall be within one-half inch (1/2") of
the specified depth.
In areas where the grinding process disturbs the existing subgrade/base course, the Contractor shall utilize a rubber
tired roller to re-compact the surface. This item will not be measured and paid for separately but shall be included
in the price for Removal of Structures and Obstructions (Grinding/Surface Preparation).
If, in the opinion of the Engineer, the subgrade material/base course is unsuitable and will require additional
grinding and/or excavation, the Engineer will direct the Contractor to perform the work in accordance with this
specification, Section 203 - Excavation. The method of work and payment are covered in the appropriate
specification.
Stockpiling of ground materials or cuttings shall not be permitted on the project site. All ground materials shall
become the property of the City of Fort Collins and shall be delivered by the Contractor to the City's site at 1500
Hoffman Mill Road.
A grinding machine shall be used by the Contractor to perform the grinding operation. The equipment shall be self-
propelled with sufficient power, traction, and stability to maintain adequate depth of cut and slope. The equipment
shall be capable of accurately and automatically establishing a finish profile grade along each edge of the machine
within one-half inch (1/2") of the specified depth.
The grinding depth along the curb and gutter shall always be one inch (1") greater than the specified depth. This
item will not be measured and paid for separately but shall be included in the unit price for grinding to the specified
depth.
The grinding machine shall be equipped with an integral loading and reclaiming means to immediately remove the
materials being cut from the surface of the roadway and discharge the cuttings into a truck, all in one operation. The
machine shall be equipped with a means to control the dust created by the cutting action and shall meet or exceed all
local, state and federal air pollution laws.
A Bobcat style planer attachment shall be used by the Contractor to perform the grinding operation with an
approximate width of (2) two feet. The equipment shall be self-propelled with sufficient power, traction, and
stability to maintain adequate depth of cut and slope.
The Contractor shall also provide adequate backup equipment (mechanical street sweepers, loaders, water truck,
etc.) and adequate personnel shall be provided to insure that all cuttings are removed from the roadway daily.
REVISION OF SECTION 202
GRINDING AND SURFACE PREPARATION
Project Specifications – Page 11 of 39
REVISION OF SECTION 202
GRINDING AND SURFACE PREPARATION
Project Specifications – Page 12 of 39
It is the intent of this specification that the ground section will be paved back as follows:
On streets where the grinding depth is such that the aggregate base course is to be replaced, the aggregate
base course shall be placed the same day as the grinding and the bituminous paving (1st lift) within 48
hours of the grinding.
The Engineer reserves the right to require that the ground section be paved back immediately in the case of
grinding done on Friday, in the event that severe weather is imminent, or in the case that the ground section
presents an extreme safety hazard to the traveling public or inconvenience to the residents.
In the event that the ground section is not paved back the same day as the grinding, the Contractor shall
provide access to the residents as directed by the Engineer.
In the event that the ground section is not paved back the same day as the grinding, the Contractor shall be
responsible for the protection of the subgrade/base course until subsequent courses have been placed.
The Engineer may require that the pavement grinding operation be referenced from an independent grade
control in those areas where the existing curb and gutter or roadway surfaces have deteriorated.
In the event that the entire pavement width along a section of roadway has not been ground to a uniform
surface by the end of the work period resulting in a vertical longitudinal face exceeding one inch (1") in
height, this longitudinal face shall be sloped in a manner acceptable to the Engineer so as not to create a
hazard to traffic using the roadway during periods when the construction is not in progress. Transverse
faces that are present at the end of the working period shall be tapered at a 3:1 ratio (three (3) inches
horizontally for each one (1) inch of vertical drop.)
The grinding machine shall not be operated within the close proximity to manholes, inlets, valve boxes and
other obstructions that have not been lowered to avoid damage to these structures. (See Revision of
Section 210 - Adjust Manholes, Valve Boxes, and Meter Boxes for requirements for referencing structures
during construction.) The approaches to and from these structures shall be tapered to allow a smooth
transition over these structures to accommodate traffic flow over the manhole, valve box or other
obstruction. Allowable taper shall not be greater than one quarter inch vertical rise per one foot distance
from the structure.
All curbs, gutters and other surfaces shall be cleaned of all debris and left in a neat and presentable condition at the
end of each working day.
The Contractor shall use all means necessary to prevent the spread of dust and debris during the performance of the
work. Where equipment comes into contact with tree branches and other plant material, the contractor shall exercise
suitable caution to avoid damage to all trees, shrubs, and other plant material. All trimming shall be performed
under the direction of the Engineer.
Subsection 202.07 shall be revised to include the following:
The accepted quantities of Grinding and Surface Preparation will be paid for at the contract unit price per square
yard including haul. The removal of material in areas not accessible to the grinding machine will be paid for at the
contract unit price for Grinding.
Taper Planing shall consist of cold milling along the gutter at a depth of one inch (1") tapered to a depth on the other
side of the mill of zero inches (0"). The width for Taper Planing shall be six (6) feet. Taper Planing shall be paid at
the contract unit price per lineal foot.
REVISION OF SECTION 202
GRINDING AND SURFACE PREPARATION
Project Specifications – Page 13 of 39
Payment will be made under:
Pay Item
Pay Unit
202.10 Grinding (Planing)/Surface Preparation
Depth = 3 inches or less
Square Yard
202.20 Grinding (Planing)/Surface Preparation
Depth = 3+ to 5 inches
Square Yard
202.30 Grinding (Planing)/Surface Preparation
Depth = 5+ to 7 inches
Square Yard
202.40 Grinding (Planing)/Surface Preparation
Depth = 7+ to 9 inches
Square Yard
202.50 Taper Planing Along
Gutter
Lineal Foot
202.60 Bobcat Style Milling < 3” Square Yard
202.70 Bobcat Style Milling –
Additional Inch Thickness
Square Yard - Inch
The above prices and payments shall include full compensation for furnishing all labor, materials, tools, equipment,
and incidentals and for doing all work involved in the Grinding and Surface Preparation, including haul, complete-
in-place, as shown on these plans, as specified in these specifications, and as directed by the Engineer.
REVISION OF SECTION 203
EXCAVATION AND BORROW
Project Specifications – Page 14 of 39
Section 203 of the Standard Specifications is hereby revised as follows:
Subsection 203.01 is revised to include the following:
This work shall consist of removing and disposing of the existing pavement, base or other material,
preparing the subgrade for the subsequent course, and placing borrow in accordance with the specifications
and in reasonably close conformity with the lines, grades, and typical cross sections shown on the plans or
as designated by the Engineer. All excavation will be classified, "General Excavation", "Muck
Excavation", as hereafter described. The Contractor shall dispose of all excavated material.
Subsection 203.05 is revised to include the following:
(a) General Excavation shall consist of the excavation of all materials of whatever character required
for the work not being removed under some other item.
(b) Muck Excavation shall consist of the removal of unstable soils unsuitable for construction not
being removed under some other item.
Subsection 203.07 is revised to include the following:
Borrow material shall meet the grading requirement for Class 1 (Pit Run) or Class 5 (Road Base)
Aggregate Base Course. (The Class 1 Aggregate Base Course need not be crushed and can be of the pit run
variety provided it falls within the gradation requirements as shown in the Standard Specifications.) The
material required for a specific location shall be directed by the Engineer
Subsection 203.09 is revised to include the following:
The Contractor shall be responsible for the protection of the subgrade/base course until subsequent courses
have been placed.
The excavation will be accomplished in the following manner:
General Excavation:
The pavement areas to be removed will be marked on the surface by the Engineer with paint. A
straight vertical cut shall be made through the pavement to provide a square or rectangular
opening, such that each edge will be parallel or at right angles to the direction of traffic. Wheel
cutting shall not be allowed.
If, in the opinion of the Engineer, the subgrade material is unsuitable, it shall be removed to the
limits and depths designated.
After the material has been removed to the depth specified by the Engineer, the Contractor shall
prepare the subgrade by compacting with a sheepsfoot roller, rubber tired roller and/or other
compaction equipment as approved by the Engineer. The subgrade preparation shall not be
measured and paid for separately, but shall be included in the contract unit price for General
Excavation.
Muck Excavation:
Where excavation to the finished grade section (including General Excavation and Patching)
results in a subgrade of unsuitable soil, the Engineer may require the Contractor to remove the
unsuitable materials and backfill to the finished grade section with approved material (asphalt or
borrow).
REVISION OF SECTION 203
EXCAVATION AND BORROW
Project Specifications – Page 15 of 39
REVISION OF SECTION 203
EXCAVATION AND BORROW
Project Specifications – Page 16 of 39
After the material has been removed to the depth specified by the Engineer, the Contractor shall
prepare the subgrade with a sheepsfoot roller, rubber tired roller, vibratory plate, steel drum roller,
and/or other compaction equipment as approved by the Engineer. The subgrade preparation shall
not be measured and paid for separately but shall be included in the contract unit price for Muck
Excavation.
Borrow:
Borrow shall be placed as directed by the Engineer. The minimum amount of borrow shall be one
load (approximately ten (10) ton). The cost for compaction shall be included in the Contract Unit
Price for Borrow.
Subsection 203.17 shall include the following:
The Contractor and the Engineer shall field measure and agree upon the excavated quantity before any
further work continues. Should the Contractor fail to request the Engineer to measure any work and
perform other work that would prevent the Engineer from measuring pay quantities, the Contractor shall
not be compensated for materials not measured by the Engineer.
The accepted quantities of Excavation will be paid for at the contract unit price per cubic yard. Subgrade
preparation, haul and disposal will not be measured and paid for separately.
The accepted quantities of Borrow will be paid for at the contract unit price per ton. Compaction and haul
will not be measured and paid for separately.
Subsection 203.18 shall include the following:
Payment will be made under:
PAY ITEM
UNIT
203.10 Excavation – General Less
Than 100 CY Cubic Yard
203.11 Excavation – General
Over 100 CY Cubic
Yard
203.20 Excavation – Muck
Cubic Yard
203.30 Borrow – Less Than 100
Ton Ton
203.31 Borrow – Over 100 Ton
Ton
The above prices and payments shall include full compensation for furnishing all labor, materials, tools, equipment,
and incidentals, and for doing all the work involved in Excavation and Borrow including haul, stockpiling, placing
material, watering or drying soil, compaction, proof rolling, finish grading and disposal of unusable materials, as
shown on the plans, as specified in these specifications, and as directed by the Engineer.
REVISION OF SECTION 210
ADJUST MANHOLES, VALVE BOXES, METER BOXES
Project Specifications – Page 17 of 39
Section 210 of the Standard Specifications is hereby revised as follows:
Subsection 210.02 is revised to include the following:
Manholes, valve boxes, meter boxes, and all other similar structures located in a pavement shall be adjusted as noted
below.
Prior to beginning any construction on existing streets that will receive reconstruction and/or overlay, the Contractor
shall mark on the curb and gutter with paint the location of all existing structures. These markings shall be
maintained by the Contractor until the work has been completed and accepted by the Engineer.
The Contractor shall do all work needed to ensure that said structures can be readily adjusted and shall have all
necessary materials on hand prior to commencing the work. Contractor shall verify that manholes and valve boxes
can be adjusted prior to the overlay. In the event they cannot be adjusted, or properly fitted with rings, the
Contractor shall excavate and adjust prior to the overlay as noted below.
All structures shall be adjusted to be 1/8" to 5/8" below the pavement.
In locations where a structure to be adjusted is surrounded by a concrete collar, the concrete collar shall be removed
and replaced with Hot Bituminous Pavement. HBP Grading SG shall be used in all locations except as noted below.
In locations where a structure adjustment takes place and no overlay is scheduled, HBP Grading SG shall be placed
in the bottom of the patches and shall be left one and one-half (1 ½ ) to two (2) inches below the existing street
surface to allow the patch to be "topped" with a surface course material. The "topping" material shall be Hot
Bituminous Pavement Grading SX on residential, and Grading S on arterials or collector streets. Hot Bituminous
Pavement used for "topping" material will be measured and paid for at the contract unit price for Patching.
Pavement removal (concrete or asphalt) and placement of bituminous material (Hot Bituminous Pavement) utilized
for structure adjustment, including Grading SG and "topping" material (Grading CX), shall be paid for under the
contract unit price for Patching.
The Engineer shall determine the method of adjustment for each structure. Valve boxes shall be adjusted by one of
the following methods:
1. Adjust by removing the existing pavement (concrete or asphalt), adjusting the valve by
turning it to the proper grade, trimming the existing asphalt by cutting vertical edges, then
spreading and mechanically compacting bituminous material. This item will be measured and
paid for separately under "Adjust Valve Box", not including bituminous material.
2. If the valve box cannot be turned up or can be turned up, but not sufficiently to achieve
the proper grade or if the top section of valve box is in poor condition, the Contractor shall
excavate around the top section of the valve box, and remove and replace the top section with a
longer section. The top section part will be measured and paid for separately under the terms of
this Contract. The excavation shall then be back filled with Non-Shrink backfill to the top of
subgrade, and then material of the same grade and quality as the adjacent pavement shall be
placed. A mix design for Non-Shrink back fill shall be submitted and approved prior to starting
work. These items shall be measured and paid for separately under "Adjust and Replace Top
Section of Valve Box", not including the top section part or bituminous material.
Non-Shrink backfill -- also called Flowable Fill or Unshrinkable Fill -- shall be a Portland Cement
Concrete Mix. The cement shall conform to the Standard Specifications for Portland Cement,
ASTM C 150-85, Type I/II. The minimum 24 hour strength shall be 10 psi and the maximum 28
REVISION OF SECTION 210
ADJUST MANHOLES, VALVE BOXES, METER BOXES
Project Specifications – Page 18 of 39
day strength shall be 60 psi. The maximum aggregate size shall be one inch (1"). The minimum
slump shall be six inches (6") and the maximum, eight inches (8"). The non-shrink backfill shall
be consolidated with a mechanical vibrator.
3. Adjust with adjusting rings or Screw Type Adjustable Risers. These items will be
measured and paid for under "Adjust Valve Box with Ring" or "Adjust Valve Box with Screw
Type Adjustable Riser", including material (parts).
The Contractor shall exercise reasonable care while attempting to adjust the valve boxes. If the Contractor is
negligent and breaks the valve box, said valve box shall be replaced at the Contractor's expense.
Adjusting rings for valve boxes shall be of the type manufactured by the Tyler Manufacturing Company or an
approved equal.
Valve Box Top Section, Screw Type Adjustable Risers, and Extensions shall be of the type manufactured by the
Tyler Manufacturing Company, 6850 or 6860 Series, as approved by the Engineer.
Manholes shall be adjusted by one of the following methods:
1. Adjust by removing an area of pavement (concrete or asphalt) with a minimum diameter
one foot (1') larger than the structure (centered on the structure) by cutting vertical edges,
adjusting the manhole by grouting concrete rings and/or utilizing metal shims to raise the structure
to the proper grade, then spreading and mechanically compacting bituminous material. This item
will be paid for under "Adjust Manhole", not including bituminous material.
2. Adjust with adjusting rings. This item will be measured and paid for separately under
"Adjust Manhole with Ring". Paving rings are not permitted on arterial streets, collector streets,
or in the wheel path of a travel lane. Contractor shall verify that the manhole can properly be
adjusted with a ring to the proposed grade prior to beginning the overlay.
When the manhole adjustment is complete, the slope of the top surface of the manhole cover shall match the slope
of the pavement in both the longitudinal and traverse directions. Any manhole cover which is unstable or noisy
under traffic shall be replaced by the Contractor.
If a manhole or valve box is located in an area to be patched or cold milled, it may be adjusted as part of that
operation utilizing one of the methods listed in the previous paragraphs. The adjustment will be paid for under the
matching item.
If the structure is adjusted during the grinding or patching operation, the Contractor shall place hot bituminous
material around the structure as directed by the Engineer to insure that it will not be a hazard to vehicular traffic.
The Contractor shall be responsible for immediately cleaning out all construction materials that may fall into
manholes, valve boxes, or other structures during the construction process.
In the event that a structure was not properly adjusted (i.e. too high or too low), written notice will be given by the
Engineer to the Contractor requiring the Contractor to make the necessary adjustments within five (5) working days.
In the event that the structure is not adjusted within said time frame, the Engineer shall have the right to engage a
third party to complete the work, and to withhold the cost of such work from payments due the Contractor.
The Engineer will also notify the Contractor in writing of any structures that were covered during the paving
operation. The Contractor shall then have five (5) working days to make said structure accessible or will be subject
to the constraints of the previous paragraph with respect to a third party completing the work.
In the unlikely event that a structure is adjusted after the overlay is complete, the Contractor must exercise care as
REVISION OF SECTION 210
ADJUST MANHOLES, VALVE BOXES, METER BOXES
Project Specifications – Page 19 of 39
not to damage the new pavement surrounding the structure. The “topping” material shall be Grading SX on
residential streets, and Grading S on arterial and collector streets. Grading SG shall be used for the bottom lifts as
described in Revision of Section 403, Hot Bituminous Pavement – Patching.
Subsection 210.04 shall include the following:
The accepted quantities of Adjust Manholes, Valve Boxes, and Meter Boxes will be paid for at the contract unit
price per each. Non-shrink backfill, concrete, haul and disposal will not be measured and paid for separately but
shall be included in the contract unit price for each type of adjustment.
Payment will be made under:
Pay Item
Pay Unit
210.01 Adjust Valve Box
Each
210.02 Adjust Valve Box with
Ring
Each
210.03 Adjust Valve Box with Tyler 6860 Series,
Item R 69, Screw Type Adjustable Riser Each
210.04 Adjust and Replace Top
Section of Valve Box
Each
210.05 Tyler 6850 Series, Item 58,
14" Valve Box Extension (Part Only) Each
210.06 Tyler 6860 Series 16" Valve Box
Top Section Without Lid (Part Only) Each
210.07 Tyler 6860 Series 26" Valve Box
Top Section Without Lid (Part Only) Each
210.08 Total Valve Box Replacement
Tyler 6860 Series, 30” Bottom Section Each
210.09 Adjust Standard Manhole
≤ 24”
Each
210.10 Adjust Special Manhole > 24” Each
210.11 Adjust Manhole With Ring Each
The above prices and payments shall include full compensation for furnishing all labor, materials, tools, equipment,
REVISION OF SECTION 210
ADJUST MANHOLES, VALVE BOXES, METER BOXES
Project Specifications – Page 20 of 39
and incidentals, and for doing all the work involved in adjusting structures, complete-in-place, including non-shrink
backfill, concrete, haul and disposal, as shown on the plans, as specified in these specifications, and as directed by
the Engineer.
REVISION OF SECTION 307
STABILIZED SUBGRADE - CLASS C FLY ASH
Project Specifications – Page 21 of 39
Section 307 of the Standard Specification is hereby revised as follows:
DESCRIPTION
This item shall consist of treating the subgrade, existing subbase or existing base, by pulverizing, adding Class C fly
ash, and mixing and compacting the mixed material to the required density. This item applies to natural ground or
embankment and shall be constructed as specified herein and in conformity with the typical sections, lines and
grades as shown on the plans or as established by the Engineer.
MATERIALS
(1) Fly Ash - Fly Ash shall meet ASTM C 618 for Class C Fly Ash.
(2) Water - The water used in the stabilized mixture shall be potable.
CONSTRUCTION REQUIREMENTS
EQUIPMENT
(1) The machinery, tools and equipment necessary for proper prosecution of the work shall be on the
project and approved by the Engineer prior to the beginning of construction operations.
All machinery, tools, and equipment used shall be maintained in a satisfactory and workmanlike
manner.
(2) Fly ash is furnished in trucks. Each truck shall have the weight of fly ash recorded on certified
scales.
CONSTRUCTION METHODS
(1) General
It is the purpose of this specification to secure a completed course of treated material which
contains a uniform fly ash/soil mixture with no loose or segregated areas; has a uniform density
and moisture content; is well bound for its full depth; and has a smooth surface suitable for
placing subsequent courses. It shall be the responsibility of the Contractor to regulate the
sequence of his work; to process a sufficient quantity of material to provide full depth as shown on
the plans; to use the proper amounts of fly ash; to maintain the work; and to rework the courses as
necessary to meet the above requirements.
(2) Preparation of Subgrade
Before other construction operations are begun, the subgrade shall be graded and shaped to enable
the fly ash treatment of materials in place, in conformance with the lines, grades, and thickness
shown on the plans.
(3) Application
The fly ash shall be spread by a method approved by the Engineer at the rates shown on the plans
or as directed by the Engineer. Fly ash shall not be applied when wind conditions, in the opinion
of the Engineer, are such that blowing fly ash becomes objectionable to traffic or adjacent
property owners.
REVISION OF SECTION 307
STABILIZED SUBGRADE - CLASS C FLY ASH
Project Specifications – Page 22 of 39
During final mixing, the materials shall be sprinkled, as directed by the Engineer, until the proper
moisture content has been secured. However, initial mixing after the addition of fly ash will be
accomplished dry, or with a minimum of water, to prevent fly ash balls. Final moisture content of
the mix, prior to compaction, shall not exceed the optimum moisture content of the mix by more
than 2%, nor be less than optimum by more than 2%. Should the natural moisture content of the
soil be above the specified range, aeration of the soil may be required prior to addition of the fly
ash.
(4) Mixing
The soil and fly ash shall be thoroughly mixed by approved road mixers or other approved
equipment. The mixing shall continue until, in the opinion of the Engineer, a homogeneous,
friable mixture of soil and fly ash is obtained, free from all clods or lumps. Water required to
achieve the specified moisture content for the mixture should be added after initial mixing. There
shall be a 6" overlap between passes to assure a consistent mix.
(5) Compaction
Compaction of the mixture shall begin immediately after mixing of the fly ash and shall be
completed within 2 hours following addition of water to the fly ash. The material shall be
sprinkled as necessary to maintain the optimum moisture. Compaction of the mixture shall begin
at the bottom and shall continue until the entire depth of mixture is uniformly compacted to the
specified density.
All non-uniform (too wet, too dry, or insufficiently treated) areas which appear shall be corrected
immediately by scarifying the areas affected, adding or removing material as required, and
reshaping and re-compacting by sprinkling and rolling. The surface of the course shall be
maintained in a smooth condition, free from undulations and ruts, until other work is placed
thereon or the work is accepted.
The stabilized section shall be compacted to the extent necessary to provide the density specified
below.
DESCRIPTION DENSITY
For fly ash treated subgrade, existing subbase or
existing base that will receive subsequent subbase
or base courses.
Not less than 95% maximum dry density
(ASTM D 698)
For fly ash treated base that will receive surface
course.
Not less than 97% maximum dry density
(ASTM D 698)
In addition to the requirements specified for density, the full depth of the material shown on the
plans shall be compacted to the extent necessary to remain firm and stable under construction
equipment. After each section is completed, tests as necessary will be made by the Engineer. If
the material fails to meet the density requirements, the Engineer may require it to be reworked as
necessary to meet those requirements or require the Contractor to change his construction methods
to obtain required density on the next section. Throughout this entire operation the shape of the
course shall be maintained by blading, and the surface, upon completion, shall be smooth and in
conformity with the typical section shown on the plans and to the established lines and grades.
Blading should be terminated within 2 hours after blending of the fly ash. Should the material,
due to any reason or cause, lose the required stability, density or finish before the next course is
placed, or the work is accepted, it shall be reprocessed, re-compacted, and refinished at the sole
expense of the Contractor. Reprocessing shall follow the same pattern as the initial stabilization,
including the addition of fly ash.
REVISION OF SECTION 307
STABILIZED SUBGRADE - CLASS C FLY ASH
Project Specifications – Page 23 of 39
REVISION OF SECTION 307
STABILIZED SUBGRADE - CLASS C FLY ASH
Project Specifications – Page 24 of 39
(6) Finishing, Curing, and Preparation for Surfacing
After the final layer or course of the treated subgrade, subbase or base has been compacted, it shall
be brought to the required lines and grades in accordance with the typical sections.
(a) The resulting base surface shall be thoroughly rolled with a pneumatic tire roller and
“clipped”, “skinned”, or “tight bladed” by a power grader to a depth of approximately
1/4", removing all loosened stabilized material from the section. Re-compaction of the
loose material should not be attempted. The surface shall then be thoroughly compacted
with the pneumatic roller, adding small increments of moisture as needed during rolling.
If plus No. 4 aggregate is present on the surface of the mixture, one complete coverage of
the section with the flat wheel roller shall be made immediately after the “clipping”
operation. When directed by the Engineer, surface finishing methods may be varied from
this procedure provided a dense, uniform surface, free of surface compaction planes, is
produced. The moisture content of the surface material must be maintained within the
specified range during all finishing, and shall proceed in such a manner as to produce, in
not more than 2 hours, a smooth, closely knit surface, free of cracks, ridges or loose
material conforming to the crown, grade and line shown on the plans.
(b) After the fly ash treated course has been finished as specified herein, the surface shall be
protected against rapid drying in a thorough and continuously moist condition by
sprinkling for a period of not less than 3 days, or until the surface or subsequent courses
are placed.
MEASUREMENT
Fly ash treatment of the subgrade, existing subbase, and existing base shall be measured by the square yard to neat
lines as shown on the typical sections.
PAYMENT
Work performed and materials furnished as prescribed by this item and measured as provided under “Measurement”
will be paid for as follows:
PAY ITEM UNIT
307.10 Class C Fly Ash Delivered and Spread
12" Depth, 10% by Weight Ton
307.20 Stabilize Subgrade - Tilled, Watered, and Compacted S.Y.
“Fly Ash Treated Subgrade” will be paid for at the unit price bid per square yard. The unit price bid shall
be full compensation for all correction of secondary subgrade; for loosening, mixing, pulverizing,
spreading, drying, application of fly ash, shaping, and maintaining; for all curing, including all curing water
and/or other curing materials; for all manipulations required; for all hauling and freight involved; for all
tools, equipment, labor, and for all materials necessary to complete the work, including fly ash, as shown
on the plans, as specified in these specifications, and as directed by the Engineer.
REVISION OF SECTION 401
PLANT MIX PAVEMENTS
Project Specifications – Page 25 of 39
Section 401 of the Standard Specifications is hereby revised as follows:
The following two paragraphs shall be deleted from Subsection 401.02
(a)(4) “A sufficient quantity of each aggregate, mineral filler, reclaimed material, and additive for the
required Laboratory tests.”
“The Department will process one asphalt design mix for each pavement grading at no charge to the
Contractor. The Contractor will be assessed a charge of $3,000 for testing and evaluating each additional
design mix submitted by the Contractor.”
Subsection 401.02 is hereby revised to include the following:
Requests made in writing by the Contractor for changes in the job mix formula will be considered by the
Engineer. A job mix formula shall be determined by the Contractor and submitted to the Engineer for
approval a minimum of one week prior to the beginning of construction for each proposed change. The
Contractor shall provide the Engineer with a report from an independent testing laboratory acceptable to
the Engineer. The report shall state the Superpave properties, optimum oil content, job mix formula and
recommended mixing and placing temperatures. The costs for all job mix formulas shall be the
responsibility of the Contractor.
If the Contractor uses more than three (3) job mix formulas for a type of plant mix pavement used, the City
may charge the Contractor for testing and evaluation of the mix designs, including the costs for calibration.
Mix design verification testing shall be the responsibility of the Contractor. A minimum of one verification
per mix design or one per 10,000 ton of mix used shall be provided to confirm oil content, gradation, air
voids, VMA, and stability.
Subsection 401.07 shall include the following:
Plant mix pavement shall be placed only on properly prepared unfrozen surfaces which are free of water,
snow, and ice. The plant mix pavement shall be placed only when both the air and surface temperatures
equal or exceed the temperatures specified in Table 401-3, the dates coincide with Table 401-3A, and the
Engineer determines that the weather conditions permit the pavement to be properly placed and compacted.
Subsection 401.17 is hereby revised to include the following:
All pneumatic tire rollers shall be equipped with rubber skirts.
REVISION OF SECTION 403
HOT BITUMINOUS PAVEMENT
Project Specifications – Page 26 of 39
Section 403 of the Standard Specifications is hereby revised as follows:
Subsection 403.01 is revised to include the following:
This work shall consist of placing the specified depth of Hot Bituminous Pavement, Grading SX - Parking
Lot Overlay, Grading SX, Grading SG, or Grading S, over existing pavement or subgrade surfaces
previously prepared by the Contractor or City of Fort Collins Crews, according to the current Larimer
County Urban Area Street Standards and Colorado Department of Transportation Design Criteria.
Subsection 403.02 is revised to include the following:
Laboratory Mix Design - SHRP Mix, Grading S - The mix design shall be prepared by an independent laboratory
acceptable to the Engineer. The criterion for the mix design is as follows:
Designed according to most recent set of SUPERPAVE Specifications available at the time
A request made in writing by the Contractor for changes in the job mix formula will be considered by the
Engineer.
The design mix for Grading S, SX, and SG shall conform to the current Larimer County Urban Area Street
Standards and the following:
Property Test
Method Grading S Grading SG Grading SX
Minimum Dry Split
Tensile Strength, kPa
(psi)
CPL 5109
Method B 205 (30) 205 (30) 205 (30)
Grade of Asphalt
Cement
Top Layer PG 64-28 PG 64-22 PG 64-22
Grade of Asphalt
Cement Layers Below
Top PG 64-28 PG 64-22 PG 64-22
Voids in the Mineral
Aggregate (VMA) %
minimum CP 48 (a) (a) (a)
Voids Filled with
Asphalt (VFA) % AI MS-2
(a) (a) (a)
(a) Current CDOT Design Criteria
(b) Residential 75, Collector 100, Arterial 100
The Contractor shall prepare a quality control plan outlining the steps taken to minimize segregation of
HBP. This plan shall be submitted to the Engineer and approved prior to beginning the paving operations.
When the Engineer determines that segregation is unacceptable, the paving shall stop and the cause of
segregation shall be corrected before paving operations will be allowed to resume.
REVISION OF SECTION 403
HOT BITUMINOUS PAVEMENT
Project Specifications – Page 27 of 39
Reclaimed materials will not be allowed in Hot Bituminous Pavement. A maximum of 20% reclaimed
material will be allowed for HBP Grading SG.
The Contractor shall construct the work such that all roadway pavement placed prior to the time paving
operations end for the year, shall be completed to the full thickness required by the plans. The Contractor's
Progress Schedule shall show the methods to be used to comply with this requirement.
Regardless of the delivery temperature, the mixture shall not be placed for use on the roadway at a
temperature lower than 225 F.
Emulsified Asphalt for tack coat shall be Grade CSS-1h. The tack coat shall consist of a 1:1 dilution (one
(1) part emulsified asphalt to one (1) part water). The application rate for tack coat shall be approximately
0.1 gallons per square yard.
The existing pavement shall be broomed and cleaned to be free of dirt, water, vegetation and other
deleterious matter immediately prior to commencing the paving operation. Edges of the area to be patched
shall be sawcut vertically, and perpendicular or parallel to the roadway, as directed by the Engineer. Tack
coat shall be placed against clean, vertical edges on all sides of the area to be patched.
Hot Bituminous Pavement Grading SX and S, shall be placed in equal lifts two (2) inches. The minimum
lift thickness shall be one and one half (1½”) inch. HBP Grading SG shall be placed in equal lifts not
exceeding four (4) inches. The minimum lift thickness shall be three (3) inches. Overlaying layers of Hot
Bituminous Pavement shall not be placed until the lower layer has cooled sufficiently to provide a stable
material which will support the equipment without rutting, shoving or moving in any manner. Tack coat
shall be placed between all lifts.
Any leveling courses placed shall be paid for at the contract unit price for Hot Bituminous Pavement.
Asphalt depths are specified per location in Section 02500, Quantity Estimate. Any deviation from the
specified depths shall be approved by the Engineer prior to asphalt placement.
Subsection 403.04 shall include the following:
Hot Bituminous Pavement Grading SX - Parking Lot, SX – Basketball Court, SX, S, and SG, will be
measured by the ton and paid for at the Contract Unit Price for Hot Bituminous Pavement. Haul,
bituminous materials, aggregate, asphalt cement, asphalt recycling agent, additives, hydrated lime, and all
other work necessary to complete each hot bituminous pavement item will not be paid for separately but
shall be included in the unit price bid.
Load slips shall be consecutively numbered for each day and shall include batch time.
REVISION OF SECTION 403
HOT BITUMINOUS PAVEMENT
Project Specifications – Page 28 of 39
Subsection 403.05 shall include the following:
Payment will be made under:
Pay Item Pay Unit
403.10 HBP Grading SX - Parking Lot Ton
403.15 HBP Grading SX – Basketball Court Ton
403.20 HBP Grading SX Ton
403.30 HBP Grading S Ton
403.40 HBP Grading SG Ton
The above prices and payments shall include full compensation for furnishing all labor, materials, tools,
equipment, and incidentals, and for doing all the work involved in Hot Bituminous Pavement, including
compaction, rolling, haul, surface preparation, and bituminous materials, complete in-place, as shown on
these plans, as specified in these specifications, and as directed by the Engineer.
REVISION OF SECTION 403
HOT BITUMINOUS PAVEMENT - PATCHING
Project Specifications – Page 29 of 39
Section 403 of the Standard Specifications is hereby revised as follows:
Subsection 403.01 is revised to include the following:
This work shall consist of excavating pavement areas to the specified depth, preparing the subgrade, and
placing Hot Bituminous Pavement in accordance with these specifications, and in reasonably close
conformity with the lines, grades, thickness and typical cross sections shown on the plans or established.
Subsection 403.02 is revised to include the following:
The materials shall conform to the requirements of Revision of Section 403 - Hot Bituminous Pavement
found herein.
Subsection 403.03 is revised to include the following:
Patching will be accomplished in the following manner:
A straight vertical cut shall be made through the pavement to provide a square or rectangular opening,
such that each edge of the finished patch will be parallel or at right angles to the direction of traffic.
Wheel cutting shall not be allowed. All patches placed in pavement not to be overlaid shall be sawcut.
If, in the opinion of the Engineer, the subgrade material for the patch is unsuitable, it shall be removed to
the limits and depths designated. If asphalt is to be placed in the extra depth, the Contract Unit Price for
Patching shall be used for measurement and payment. If the deepened section is to be filled with Borrow,
the excavation will be measured and paid for under Revision of Section 203 - Excavation and the material
paid for under the appropriate item found herein.
The Contractor shall be responsible for the protection of the subgrade/base course until subsequent
courses have been placed.
After the excavation has been completed, the Contractor shall prepare the subgrade by utilizing a
vibratory plate, roller, or other compaction device approved by the Engineer.
After the area to be patched is prepared, the Contractor shall place an emulsified asphalt tack coat on all
pavement cut surfaces and on the lip of exposed gutter and crosspan faces that abut these paving areas.
Emulsified Asphalt for tack coat shall be grade CSS-1h. The tack coat shall consist of a 1:1 dilution (one
(1) part emulsified asphalt to one (1) part water). The application rate for tack coat shall be approximately
0.1 gallons per square yard.
Grading SG shall be used in all locations except in locations where patching takes place and no overlay is
scheduled.
REVISION OF SECTION 403
HOT BITUMINOUS PAVEMENT - PATCHING
Project Specifications – Page 30 of 39
Grading SG shall be placed in the bottom of the patches and shall be left one and one-half (12) to
two (2) inches below the existing street surface to allow the patch to be "topped" with a surface
course material. The "topping" material shall be Hot Bituminous Pavement Grading SX for
residential streets, and Grading S for arterials and collectors. Hot Bituminous Pavement used for
"topping" material will be measured and paid for at the Contract Unit Price for Patching.
In locations where concrete repairs take place in an area of a large patch or in grind areas and the
grind operation does not immediately follow the concrete repair (three (3) days), the Contractor
shall remove no more than six (6) inches of pavement. The pavement areas shall be temporarily
patched with a minimum of two (2) inches of asphalt. These locations shall be paid under the
Contract Unit Price for Patching.
Regardless of the delivery temperature, the mixture shall not be placed for use on the roadway at
a temperature lower than 225° F.
Pavement areas to be replaced adjacent to concrete repairs shall be completed within three (3)
working days of said concrete work.
Areas requiring reduction in the quantity for Patching shall be deducted from the pay quantity
using the following formula:
Deduct 0.054 Tons Per Square Yard Inch
Subsection 403.04 is revised to include the following:
Patching and Arterial Patching will be measured and paid by the ton. The Arterial Patching item
will be used when existing asphalt is equal to or greater than 10”. Pavement cutting, excavation,
subgrade preparation, haul, disposal, and bituminous materials will not be measured or paid for
separately, but shall be included in the contract price for Patching or Arterial Patching.
Load slips shall be consecutively numbered for each day and shall include the batch time.
Subsection 403.05 is revised to include the following:
The accepted quantities for Patching will be paid for at the Contract Unit Price per Ton.
Payment will be made under:
Pay Item Pay Unit
403.50 Patching Ton
403.55 Arterial Patching (≥10”) Ton
The above prices and payments shall include full compensation for furnishing all labor,
materials, tools, equipment, and incidentals and for doing all the work involved in Patching,
including pavement cutting, excavation, haul, disposal, surface preparation, and bituminous
materials, complete-in-place, as shown on these plans, as specified in these specifications, and as
directed by the Engineer.
REVISION OF SECTION 403
GEOTEXTILE PAVING FABRIC
Project Specifications – Page 31 of 39
DESCRIPTION
This work shall consist of placing Geotextile Paving Fabric as manufactured by Phillips Fibers
Corporation, Hoechst Fibers Industries, Amoco Fabrics Company, or an approved equal in
designated areas in substantial compliance with the plans, specifications and as directed by the
Engineer.
MATERIALS
Geotextile Paving Fabric shall be a non-woven, needle-punched pavement reinforcing fabric which
conforms to the following properties:
Grab Strength, either 90 lbs.
direction, minimum
(ASTM D-4632)
Elongation, either direction, 50 percent
minimum
(ASTM D-4632)
Burst Strength, minimum 185 PSI
(ASTM D-3786)
Weight, minimum 3.6 oz./sq. yd.
Asphalt Retention, minimum 0.2 gal./sq. yd.
(TF25 #8)
Melting Point, minimum 300° Fahrenheit
(ASTM D-276)
The tack coat to be applied to the road surface and/or to the Geotextile Paving Fabric shall meet the
following requirements:
Asphalt Cement AC-20
Emulsified and/or Cutback Asphalt shall not be used as tack coat for Geotextile Paving Fabric.
CONSTRUCTION REQUIREMENTS
Surface preparation: The pavement to be repaired shall be cleaned and free of dirt, dust, water and
vegetation. Cracks shall be cleaned and filled in accordance with "Revision of Section 403, Crack
Sealing" of these Specifications. If the crack filling materials contain volatiles, adequate curing
time must be allowed prior to placement of the fabric. The pavement must be cleared of all sharp or
angular protrusions.
Application of Tack Coat: The tack coat shall be applied at a rate in accordance with the
manufacturer's specifications (approximately 0.25 gal./sq. yd). Application must be by a distributor.
Temperature of the tack coat must be sufficiently high to permit a uniform spray pattern. The
maximum asphalt temperature shall be 300° F.
REVISION OF SECTION 403
GEOTEXTILE PAVING FABRIC
Project Specifications – Page 32 of 39
Geotextile Paving Fabric Placement: The Geotextile Paving Fabric shall be placed into the tack coat with a
minimum of wrinkles.
If Geotextile Paving Fabric folds greater than one inch (1") occur, the Geotextile Paving Fabric shall be slit
and allowed to lie flat. Additional tack coat shall be placed as required to insure fabric bonding.
If Geotextile Paving Fabric is placed adjacent to patched sections of roadway, the fabric shall overlap said
patched section a minimum of 12 inches.
All joints shall overlap adjacent fabric approximately 2-6 inches.
Transverse joints of the Geotextile Paving Fabric shall be shingled in the direction of the paving to prevent
edge pickup by the paver.
Additional tack coat shall be uniformly applied to the joints and overlaps to insure bonding.
It shall be the Contractors responsibility to maintain the Geotextile Paving Fabric until the overlay is
complete. If the Geotextile Paving Fabric begins to be picked up, the Contractor shall immediately broadcast
sand or hot mix asphalt over the area or "skin" the Geotextile Paving Fabric with Hot Bituminous Pavement
SC Type 1 or 2. Excess sand or hot mix shall be removed before paving. Sand used for this purpose will not
be measured and paid for separately under the terms of this contract. Hot Bituminous Pavement (SC Type 1
or 2) used for this purpose will be measured and paid for at their respective contract unit prices per ton.
Geotextile Paving Fabric shall be clean, dry and sufficiently bonded to the tack coat prior to commencing the
paving operations. Paving operations shall be completed the same day as the Geotextile Paving Fabric
placement.
METHOD OF MEASUREMENT
Geotextile Paving Fabric will be measured by the square yard including surface preparation and AC-20 tack
coat.
BASIS OF PAYMENT
The accepted quantities of Geotextile Paving Fabric will be paid for at the contract unit price per square yard
complete-in-place, including surface preparation and AC-20 tack coat.
Payment will be made under:
Pay Item Pay Unit
403.60 Geotextile Paving Fabric Square Yard
The above prices and payment shall include full compensation for furnishing all labor, materials, tools,
equipment, and incidentals, and for doing all the work involved in placing tack coat and Geotextile Paving
Fabric, including haul and bituminous materials, complete-in-place, as shown on the plans, as specified in
these specifications, and as directed by the Engineer.
REVISION OF SECTION 614
TRAFFIC CONTROL DEVICES
Project Specifications – Page 33 of 39
Section 614 of the Standard Specifications is hereby revised as follows:
Subsection 614.15 shall be revised as follows:
This work shall consist of furnishing, installing, moving maintaining and removing temporary traffic signs,
advance warning arrows panels, barricades, channelizing devices, and delineators as required by the latest
revision of the "Manual on Uniform Traffic Control Devices for Streets and Highways" (MUTCD), the
City of Fort Collins “Work Area Traffic Control Handbook", and the Larimer County Urban Area Street
Standards.
In the event of a conflict between the MUTCD criteria and the City's criteria, the City's criteria shall
govern.
When a device is not in use, the Contractor shall remove it from the project for the period it is not needed.
Devices temporarily not in use shall, as a minimum, be removed from the area. Moving will include
devices removed from the project and later returned to use. Payment shall be made for the maximum
number of each type of traffic control device being used at one given time per day.
Traffic control devices shall be placed and/or stored in the City right-of-way in such a manner that
minimizes the hazards to pedestrians, bicyclists and vehicles.
Traffic control devices shall be removed from the site immediately upon completion of the work for
any street(s).
Subsection 614.16 shall include the following:
All traffic control devices placed for this project must meet or exceed the minimum standards set forth in
the MUTCD. All traffic control devices shall be clean and in good operating condition when delivered and
shall be maintained in that manner on a daily basis. All traffic control devices shall be clearly marked and
free of crossed out information or any other form of defacement that detracts from the purpose for which
they are intended (i.e. crossed out information, information written in long-hand style, etc.)
Additionally, any sign blank with sign faces on both sides must have the back sign face covered when in
use to avoid confusion to motorists traveling in the opposite direction and other potentially affected parties,
such as residents affected by any information the sign may present.
Subsection 614.20 shall be revised as follows:
Traffic control through the construction areas is the responsibility of the Contractor.
For all locations, a Traffic Control Plan shall be prepared. The Traffic Control Plans shall be on City
supplied forms. The Traffic Control Plans shall be submitted for approval to the Engineer by 8:00 a.m.,
two working days prior to the commencement of work. (Note: Traffic Control Plans for work done on
Monday and Tuesday shall be submitted the previous Friday by 8:00 a.m.) Full road closure plans shall be
submitted no later than Friday mornings by 8:00 a.m. for projects starting the following week. All plans
shall be delivered to City Engineering, 281 North College Avenue. Facsimiles of plans shall not be
allowed. No phase of the construction shall start until the Traffic Control Plan has been approved. Failure
to have an approved Traffic Control Plan shall constitute cause for the City to stop work, as well as the
Contractor's forfeiture of payment for all work and materials at that location, with no adjustment in the
contract time.
All costs associated with Traffic Control Plan review will not be measured or paid for separately, but shall
be considered incidental to the Work.
REVISION OF SECTION 614
TRAFFIC CONTROL DEVICES
Project Specifications – Page 34 of 39
The Traffic Control Plan shall include, as a minimum, the following:
(1) A detailed diagram which shows the location of all sign placements, including advance
construction signs (if not previously approved) and speed limit signs; method, length and time
duration for lane closures, and location of flag persons.
(2) A tabulation of all traffic control devices shown on the detailed diagram including, but not limited
to: construction signs; vertical panel; vertical panel with light; Type I, Type II, and Type III
barricades; cones; drum channelizing devices; advance warning flashing or sequencing arrow
panel. Certain traffic control devices may be used for more than one operation or phase.
However, all devices required for any particular phase must be detailed and tabulated for each
phase.
(3) Number of flaggers to be used.
(4) Parking Restrictions to be in affect.
Approval of the proposed method of handling traffic is intended to indicate those devices for which
payment is to be made. Such approval does not relieve the Contractor of liability specifically assigned to
him under this contract.
Parking Restriction Plans shall be submitted and approved which show the location and quantity of "NO
PARKING" signs, the date to be placed, and the date to be removed. The plans shall be prepared on City
supplied forms. The Parking Restriction Plans shall be submitted to the Engineer by 8:00 a.m., two
working days prior to the commencement of work. (Note: Parking Restriction Plans for work done on
Monday and Tuesday shall be submitted the previous Friday by 8:00 a.m.) All plans shall be delivered to
City Engineering, 281 North College Avenue. Facsimiles of plans shall not be allowed. No phase of the
construction shall start until the Parking Restriction Plan has been approved. Failure to have an approved
Parking Restriction Plan shall constitute cause for the City to stop work, as well as the Contractor's
forfeiture of payment for all work and materials at that location, with no adjustment in the contract time.
The cost for preparing and submitting the traffic control plan shall be included in the contract unit price for
Traffic Control Supervisor.
Subsection 614.21 shall be revised as follows:
Traffic Control Management shall be performed by a Traffic Control Supervisor (TCS). The TCS(s) shall
possess a current American Traffic Safety Services Association (ATSSA) certification as a Worksite Traffic
Control Supervisor or Colorado Contractor's Association (CCA) certification as a Traffic Control
Supervisor. (Proof of certification shall be presented to the City Traffic Control Manager, and when
requested by a City representative, for each TCS utilized on this project.)
One TCS shall be designated as the Head TCS. The Head TCS shall have a minimum of one year
experience as a certified TCS. Qualifications shall be submitted to the Engineer for approval a
minimum of one week prior to commencement of the work. The Head TCS shall be on site at all times
during the construction when payment is made under the contract unit price for Traffic Control Supervisor
per day. When the TCS is being paid under the TCS per hour item, time spent on site may be modified by
the City Representative, as needed, based on the size and complexity of the project, location of work,
duration of the project, traffic factors, weather, and roadway characteristics.
The TCS shall be equipped with a cellular phone. The cost of this phone shall be incidental to the day or
hour pay unit for TCS.
REVISION OF SECTION 614
TRAFFIC CONTROL DEVICES (Continued)
Project Specifications – Page 35 of 39
It is the intent of the specifications that the Head TCS be the same throughout the project. If the Head TCS
is to be replaced during the project, the Engineer shall be given a minimum of one (1) weeks notice and
qualifications shall be submitted for approval for the replacement.
The Head TCS will be paid for under the TCS item.
The TCS's duties shall include, but not be limited to:
(1) Preparing, revising and submitting Traffic Control Plans as required. (Review fees will not be
measured or paid for separately, but shall be considered incidental to the Work.)
(2) Direct supervision of project flaggers.
(3) Coordinating all traffic control related operations, including those of the Subcontractors and
suppliers.
(4) Coordinating project activities with appropriate police and fire control agencies, Transfort, school
districts and other affected agencies and parties prior to construction. Typed hand delivered
notification to all businesses and residents at least 24 hours prior to construction. (The
notification of residents and businesses may be accomplished by a representative of the TCS.)
(5) Maintaining a project traffic control diary which shall become part of the City's project records.
(6) Inspecting traffic control devices on every calendar day for the duration of the project.
(7) Insuring that traffic control devices are functioning as required.
(8) Overseeing all requirements covered by the plans and specifications which contribute to the
convenience, safety and orderly movement of traffic.
(9) Flagging.
(10) Setting up traffic control devices.
Notification of residents and businesses shall be the responsibility of the TCS and shall consist of
distributing letters indicating the nature of the work to be completed, any special instructions to the
residents (i.e. limits on lawn watering during concrete pouring, etc.), the dates and times of the work, and
the parking and access restrictions that will apply, as well as thorough information placed on "NO
PARKING" signs. Sample letters will be provided by the Engineer and shall be distributed prior to the
commencement of each phase of the work. Letters shall be submitted with the Traffic Control Plans for
approval. Approved letters shall be distributed a minimum of 24 hours prior to the commencement of
work. (Note: The time frame criteria for distributing letters is the same as for posting "NO PARKING"
signs.) The cost for preparing and distributing the letters shall be included in the cost for TCS.
Traffic control management shall be maintained on a 24 hour per day basis. The Contractor shall make
arrangements so that the Traffic Control Supervisor or their approved representative will be available on
every working day, "on call" at all times and available upon the Engineer's request at other than normal
working hours. All costs associated with “on call” service, excluding actual hours worked, shall be
included in the contract unit price for Traffic Control Supervisor.
The TCS's will be paid only for days the Contractor works, and as directed by the Engineer. On weekends
and other days the Contractor is not working, the TCS will not be paid. Time spent maintaining signs on
the weekends, holidays, bad weather days, and other days the Contractor does not work shall be
REVISION OF SECTION 614
TRAFFIC CONTROL DEVICES (Continued)
Project Specifications – Page 36 of 39
included in the unit prices for the equipment. Time spent setting up equipment, modifying
equipment, maintaining equipment, and picking up equipment shall be included in the unit prices for
the equipment.
All traffic control devices shall be placed under the supervision of a Traffic Control Supervisor.
The Traffic Control Supervisor shall have up to date copies of the City of Fort Collins' "Work Area Traffic
Control Handbook", and Part VI of the MUTCD, pertaining to traffic controls for street and highway
construction, available at all times.
Subsection 614.23 shall be revised as follows:
Quantities to be measured for construction traffic control devices shall be the number of units of the
various sizes and descriptions listed below:
Construction Traffic Signs: Size A Signs - 0.01 to 9.00 Square Feet
Size B Signs - 9.01 to 16.00 Square Feet
"NO PARKING" Sign with Stand will be measured and paid for separately and not included in the item for
Size A Signs. "NO PARKING" Sign with Stand shall consist of a metal sign attached to a device (stand)
such as a Vertical Panel or Type I Barricade. The sign material and stand shall be approved by the
Engineer. The sign material and stand will not be measured and paid for separately but shall be included in
the Contract Unit Price for "NO PARKING" Sign with Stand. The cost for "NO PARKING" Sign with
Stand shall include delivery, rental, setup, modification, maintenance, and pickup.
“NO PARKING” signs must remain in place until the street is open to traffic. The “NO PARKING” signs
shall be in effect for one or two days only.
Traffic channelizing devices consisting of vertical panel, cones, or drum channelizing devices will be
measured by the unit. Barricade warning lights shall be measured and paid for separately if approved by the
Engineer. Advance Warning Flashing or Sequencing Arrow Panels will be measured by the unit.
The number of Traffic Control Supervisors shall be approved by the Engineer prior to each days work. The
quantity to be measured for Traffic Control Supervisor will be the number of authorized days performed by
the Traffic Control Supervisor or his approved representative. An authorized day shall be any day, or
portion of a day, authorized by the Engineer, that construction operation would require a Traffic Control
Supervisor. "On Call" and project inspections on all other days will not be measured and paid for
separately but shall be included in the work.
The cost for setting up equipment, modifying equipment, maintaining equipment, and picking up
equipment (not including "NO PARKING" Sign with Stand) during authorized days shall be included in
the Contract Unit Price for Traffic Control Supervisor.
If a TCS(s) is used for an authorized day, but not for the entire day, the TCS shall be paid at the Contract
Unit Price for "Traffic Control Supervisor" at the per hour rate.
The quantity to be measured for flagging will be the total number of hours that flagging is actually used as
authorized. Hours of flagging in excess of those authorized shall be at the Contractor's expense. Flagger
breaks shall be included in the Contract Unit Price for Flagging. The method for covering flagger breaks
shall be approved by the Engineer.
Flagging outside of the construction work hours will not be paid for under the terms of this contract unless
authorized in writing by the Engineer.
REVISION OF SECTION 614
TRAFFIC CONTROL DEVICES (Continued)
Project Specifications – Page 37 of 39
Flagger stand-by time will not be paid for under the terms of this contract.
In locations where traffic control is set up and the work is not performed due to Contractor caused delays,
the traffic control shall not be paid for under the terms of this contract. The costs for advance warning "NO
PARKING" signs for periods in excess of 24 hours prior to the advancement of work, including those
instances when said signs have been changed or otherwise updated to reflect current schedules, will not be
paid for under the terms of this contract unless authorized by the Engineer in writing. In addition, the
Owner shall deduct from compensation due the Contractor $10.00 for each traffic control device per day
for said conditions, including "NO PARKING" signs and any signs which are not removed from the site
immediately upon completion of the work.
Subsection 614.24 shall be revised as follows:
The cost for Traffic Control Devices, not including "NO PARKING" Sign with Stand, shall include
delivery, rental, and pickup. The cost for setting up equipment, modifying equipment, and maintaining
equipment will be paid for under the Contract Unit Price for TCS as described above.
The cost for "NO PARKING" Sign with Stand shall include delivery, rental, setup, modification,
maintenance, and pickup.
Payment shall be full compensation for furnishing, erecting, maintaining, moving, removing and disposing
of construction traffic control devices necessary to complete the work. All construction traffic control
devices which are not permanently incorporated into the project will remain the property of the Contractor.
The accepted quantities will be paid for at the contract unit price for each of the pay items listed below:
Pay Item Unit
614.01 "NO PARKING" Sign with Stand Per Day Per Each
614.02 Vertical Panel Without Light Per Day Per Each
614.03 Drum Without Light Per Day Per Each
614.04 Type I Barricade Without Light Per Day Per Each
614.05 Type II Barricade Without Light Per Day Per Each
614.06 Type III Barricade Without Light Per Day Per Each
614.07 Size A Sign With Stand Per Day Per Each
614.08 Size B Sign With Stand Per Day Per Each
614.09 Size A Specialty Sign - Cost of
Manufacturing Each
614.10 Size B Specialty Sign - Cost of
Manufacturing Each
614.11 Cone With Reflective Strip
REVISION OF SECTION 614
TRAFFIC CONTROL DEVICES (Continued)
Project Specifications – Page 38 of 39
Per Day Per Each
614.12 Safety Fence Per Day Per Roll
614.13 Light - Steady Burn Per Day Per Each
614.14 Light - Flashing Per Day Per Each
614.15 Advance Warning Flashing or
Sequencing Arrow Panel Per Unit Per Day
614.16 Traffic Control Supervisor Per Day
614.17 Traffic Control Supervisor Per Hour
614.18 Flagging Per Each Per Hour
The initial manufacturing will be paid for Specialty Signs per unit and the actual use paid for under the
appropriate unit cost for Size A or Size B sign. This item shall apply to new signs only. Once
manufactured, they may be used throughout the project. Upon completion of the work, the Specialty Signs
shall be returned to the Contractor.
Flagger hand signs will not be measured and paid for separately, but shall be included in the work.
The flaggers shall be provided with electronic communication devices when required. These devices will
not be measured and paid for separately, but shall be included in the work.
The cost of batteries, electricity and/or fuel for all lighting or warning devices will not be paid for
separately but will be considered subsidiary to the item.
Sand bags will not be measured and paid for separately, but shall be included in the work.
The Contractor may provide larger construction traffic signs than those typically used in accordance with
the MUTCD, if approved; however, payment will be made for the typical panel size.
The City shall not be responsible for any losses or damage due to theft or vandalism.
REVISION OF SECTION 614
TRAFFIC CONTROL DEVICES (Continued)
Project Specifications – Page 39 of 39
SPECIAL CONDITIONS FOR WORK ON ARTERIALS AND COLLECTORS
NOTE: CROSS STREET TRAFFIC SHALL BE MAINTAINED AT ALL TIMES UNLESS AUTHORIZED BY
THE ENGINEER IN WRITING.
NOTE: FULL CLOSURES ON ARTERIALS AND COLLECTORS, INCLUDING THOSE LISTED ABOVE,
WILL BE ALLOWED UNDER EXTREME CIRCUMSTANCES AND ONLY UPON APPROVAL OF
THE ENGINEER. PLANS SHALL BE APPROVED A MINIMUM OF ONE WEEK PRIOR TO THE
COMMENCEMENT OF WORK AND/OR THE TIME REQUIRED TO ADEQUATELY NOTIFY THE
PUBLIC THROUGH THE MEDIA.
SPECIAL CONDITIONS FOR WORK ON RESIDENTIAL STREETS
NOTE: FULL CLOSURES ON ALL RESIDENTIAL STREETS SHALL BE ALLOWED AS SHOWN ON THE
TRAFFIC CONTROL PLANS.