HomeMy WebLinkAbout311 Plum Pl - Special Inspections/Engineering - 05/22/20199100 W Jewell Ave
Lakewood, CO 80232
OL ENGINEERING, INC. 720-440-9450
www.diengineer.com
5/22/2019
Complete Basement Systems
11795 East 45t' Ave.
Denver, CO 80239
RE: Job Number 2018-5295
Site O�ervation Visit (Whitman)
311 Fjfum Street
Fort Collins, CO 80524
DL Engineering Inc. reviewed the progress of construction for the subject project on October 18, 2018.
Some of the construction was reviewed via photos provided by the contractor. The following is a summary
of the observations made:
New Observations:
• Reviewed the helical piers. There were 2 piers installed on the west wall spaced at
approximately V o.c., 3 installed on the south wall spaced at approximately V o.c., and 1
installed under the southeast corner of the house.
o The pier spacing was observed and appears to be in conformance with the
construction documents.
o The piers were installed to refusal or to a depth no less than that specified in the
construction documents.
o The helical piers appear to be installed in conformance with the structural
mitigation plan.
• Site grading around the perimeter of the house did not appear to be modified.
• Vegetation around the perimeter of the house did not appear to be modified.
Volatile Soils:
The moisture around the foundation elements must be controlled for the useful life of the building. Time
has shown that Colorado soils can be unstable, and structures can experience damaging movements due
to expanding and shrinking soils, primarily when moisture changes occur. Maintaining consistent soil
moisture contents around all foundation elements is crucial to minimizing foundation movements. Even
with properly engineered/constructed foundation systems these volatile soils can still exert excessive
pressures causing damage in the residence. If the Owner would like further insight about the on -site soil
conditions and preventative measures, a Geotechnical Engineer should be consulted.
Geotechnical Consideration:
It is possible that the piers may consolidate the soil under the piers. Because of this, periodic surveys of
the supported structures should be conducted to assure project success. The Owner should be
responsible for annual surveys certifying project success. It is recommended that a baseline survey be
conducted immediately. The Owner should report all findings and reports to the Structural Engineer. If
vertical movement of the foundation walls is discovered, the piers should be re -pressurized. A
Geotechnical Engineer should be present for the re -pressurizing of the piers.
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OL ENGINEERING. INC.
Disclaimer:
In as much as the site review of an existing structure for the purpose of observing the structure conditions
requires that certain assumptions be made regarding existing conditions and because some of these
assumptions may not be verifiable without expending additional sums of money or destroying otherwise
adequate or serviceable portions ofthe building,the Client agrees that,except for negligence on the part
of the Engineer,the Client will hold harmless, indemnify and defend Engineer from and against any and
all claims arising out of the professional services we have provided.
If you should have any further questions, please feel free to contact me at (720) 440-9450 or
khoiness@dlengineer.com.
Sincerely, o`'�vg� '=��s�o�
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Kelly Hoiness, PE '°�c'•...,, .•''G��'
SS�oNAI.EN
EXP.10/31/19
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