HomeMy WebLinkAboutTHE GREEN SOLUTION - PDP/FDP - FDP150045 - SUBMITTAL DOCUMENTS - ROUND 1 - STORMWATER-RELATED DOCUMENTSPROPERTY
LOCATION
BFE AT UPSTREAM EDGE OF
BUILDING = 4967.6
FLOOR AREA DATA
BFE AT UPSTREAM EDGE OF
BUILDING = 4967.6
FLOOD VENTS AS REQUIRED:
x OPENINGS HAVING A TOTAL NET AREA OF NOT
LESS THAN ONE SQUARE INCH FOR EVERY
SQUARE FOOT OF ENCLOSED AREA
x OPENINGS BE ON AT LEAST 2 DIFFERENT WALLS
OF THE FOUNDATION; ONE WALL BEING THE
UPSTREAM WALL
SEE SHEET C5.1 FOR ADDITIONAL INFORMATION.
PROPOSED BUILDING FOOTPRINT
EXISTING NEIGHBORING BUILDING
EXISTING NEIGHBORING BUILDING
PROPERTY BOUNDARY
PROPERTY BOUNDARY
EXISTING BUILDING FOOTPRINT
EXISTING 100-YR FLOODPLAIN LIMITS
SUPER-IMPOSED FROM THE FIRM
FLOODPLAIN CROSS SECTIONS
P.O. BOX 150894 Ŷ Lakewood, Colorado 80215
Ŷ ph: (720) 837-0648 Ŷ www.FloodplainSpecialists.com
SITE DEVELOPMENT
C5.0
FLOODPLAIN SITE PLAN
FOR
COMMERCIAL ADDITION
AT
810 NORTH COLLEGE AVENUE
FT. COLLINS, CO
LARIMER COUNTY
FLOODPLAIN SITE PLAN
ORIGIN. SHEET DESCRIPTION
DATE
12-09-15 C5.0 FLOODPLAIN SITE PLAN
12-09-15 C5.1 FLOODPLAIN CROSS SECTION AND FLOODPROOFING NOTES
LEGEND
T
VERTICAL DATUM = NAVD-88
OVERALL FLOODPLAIN MAP (NTS)
PROPOSED NORTH ELEVATION
BFE AT UPSTREAM EDGE
OF BUILDING = 4967.6
BFE AT UPSTREAM EDGE
OF BUILDING = 4967.6
FREEBOARD ELEV. = 4969.6
2.0' FREEBOARD ZONE
FREEBOARD ELEV. = 4969.6 FREEBOARD ELEV. = 4969.6
WATER RESISTANT
MATERIALS REQUIRED
WITHIN FREEBOARD
ZONE, SEE NOTES THIS
SHEET FOR ADDITIONAL
INFOMRATION
(NTS)
P.O. BOX 150894 Ŷ Lakewood, Colorado 80215
Ŷ ph: (720) 837-0648 Ŷ www.FloodplainSpecialists.com
SITE DEVELOPMENT
C5.1
FLOODPLAIN SITE PLAN
FOR
COMMERCIAL ADDITION
AT
810 NORTH COLLEGE AVENUE
FT. COLLINS, CO
LARIMER COUNTY
FLOODPLAIN CROSS SECTIONS
AND FLOODPROOFING NOTES
ORIGIN. SHEET DESCRIPTION
DATE
12-09-15 C5.0 FLOODPLAIN SITE PLAN
12-09-15 C5.1 FLOODPLAIN CROSS SECTION AND FLOODPROOFING NOTES
T
TABLE 2, ACCEPTABLE MATERIALS BELOW BFE (AND WITHIN THE FREEBOARD ZONE.) SEE FEMA TECHNICAL BULLETIN #2 FOR MORE INFORMATION
SUBSTANTIAL AND REDEVELOPMENT IMPROVEMENTS FOR NON-RESIDENTIAL STRUCTURES:
A. A SUBSTANTIAL IMPROVEMENT OCCURS WHEN ALL OF THE CONDITIONS ARE MET:
a. A BUILDING PERMIT IS REQUIRED.
b. THE COST OF THE IMPROVEMENT, OR THE AMOUNT OF THE DAMAGE, EQUALS OR EXCEEDS 50 PERCENT OF THE MARKET
VALUE OF THE STRUCTURE EITHER BEFORE THE IMPROVEMENT OR REPAIRS IS STARTED OR BEFORE THE BUILDING WAS
DAMAGED.
c. THE COST IS CALCULATED CUMULATIVELY OVER THE LIFE OF THE STRUCTURE DURING THE TIME THE STRUCTURE HAS BEEN
LOCATED IN A DESIGNATED FLOODPLAIN.
B. IF A SUBSTANTIAL IMPROVEMENT OCCURS, THE LOWEST FLOOR OF A NON-CONFORMING STRUCTURE, INCLUDING THE BASEMENT
AND ALL HVAC AND ELECTRICAL, MUST BE ELEVATED OR FLOODPROOFED 24-INCHES ABOVE THE FLOOD ELEVATION.
C. A REDEVELOPMENT OCCURS WHEN THERE IS A SUBSTANTIAL IMPROVEMENT AND MORE THAN 50 PERCENT OF THE WALL
PERIMETER IS REMOVED BUT THE BUILDING FOOTPRINT IS NOT INCREASED.
FREEBOARD FOR NON-RESIDENTIAL STRUCTURES:
A. FREEBOARD IS 24-INCHES.
B. ALLOWED TO ELEVATE OR FLOODPROOF THE STRUCTURE.
C. IF ELEVATING, THE LOWEST FLOOR OF THE STRUCTURE INCLUDING THE BASEMENT, ALL HVAC AND ELECTRICAL EQUIPMENT MUST
BE ELEVATED ABOVE THE FREEBOARD HEIGHT.
D. IF FLOODPROOFING, THE STRUCTURE AS WELL AS ALL HVAC AND ELECTRICAL, MUST BE FLOODPROOFED TO THE FREEBOARD
HEIGHT.
FLOODPROOFING REQUIREMENTS:
A. MATERIALS BELOW THE FREEBOARD ELEVATION MUST BE CONSTRUCTED WITH MATERIALS AND UTILITY EQUIPMENT RESISTANT TO
FLOOD DAMAGE (SEE TABLE 2 OF FEMA TECHNICAL BULLETIN 2, AUGUST 2008, "FLOOD DAMAGE-RESISTANT MATERIALS
REQUIREMENTS .)
B. HAVE AN ADEQUATE DRAINAGE SYSTEM THAT ALLOWS FLOODWATERS TO DRAIN FROM THE INTERIOR AREA OF THE CRAWLSPACE
FOLLOWING A FLOOD; MORE SPECIFICALLY AS FOLLOWS:
a. BE DESIGNED TO AUTOMATICALLY EQUALIZE HYDROSTATIC FLOOD FORCES ON EXTERIOR WALLS BY ALLOWING FOR THE
ENTRY AND EXIT OF FLOODWATERS. (OPENINGS MAY BE EQUIPPED WITH SCREENS, LOUVERS, OR OTHER COVERINGS OR
DEVICES PROVIDED THAT THEY PERMIT THE AUTOMATIC ENTRY AND EXIT OF FLOODWATERS, SEE "SMARTVENT" CATALOG FOR
EXAMPLES.)
b. A MINIMUM OF TWO OPENINGS HAVING A TOTAL NET AREA OF NOT LESS THAN ONE SQUARE INCH FOR EVERY SQUARE FOOT
OF ENCLOSED AREA.
c. OPENINGS BE ON AT LEAST 2 DIFFERENT WALLS OF THE FOUNDATION.
d. HAVE AT LEAST ONE VENT ON THE UPSTREAM SIDE OF THE STRUCTURE.
e. THE BOTTOM OF ALL OPENINGS SHALL BE NO HIGHER THAN ONE FOOT ABOVE EXTERIOR BACKFILL GRADE.
f. THE CRAWLSPACE FLOOR BE SLOPED TO FLOW TOWARDS THE FOUNDATION WALL AND THE FLOOD OPENING.S
FLOATABLE MATERIALS:
A. "FLOATABLE MATERIAL" IS DEFINED AS MATERIAL THAT IS NOT SECURED IN PLACE OR COMPLETELY ENCLOSED IN A STRUCTURE
SO THAT IT COULD FLOAT OFF-SITE DURING A FLOOD AND POTENTIALLY CAUSE HARM TO DOWNSTREAM PROPERTY OWNERS OR
THAT COULD CAUSE BLOCKAGE OF A CULVERT, BRIDGE, OR OTHER DRAINAGE FACILITY.
B. IN THE FLOOD FRINGE, FLOATABLE MATERIALS ASSOCIATED WITH ANY NON-RESIDENTIAL USE IS NOT ALLOWED.
C. IN THE FLOOD FRINGE, OUTSIDE STORAGE OF MATERIAL OR EQUIPMENT THAT IS CONSIDERED "FLOATABLE MATERIAL" IS
ALLOWED.
CITY OF FORT COLLINS FLOODPLAIN REGULATIONS FOR
THE POUDRE RIVER
VERTICAL DATUM = NAVD-88