HomeMy WebLinkAboutSite Utility Study•
INTOWN CONDOMINIUM
W. FLAGLER ST. & S.W. 8th AVE.
MIAMI, FLORIDA
SITE UTILITY STUDY
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PREPARED E Y :
ZAMORA & ASSOCIATES, INC.
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1. SITE DESCRIPTION:
The property will be developed as follows; a residential and commercial
building fronting on W. Flagler Street and encompassing the entire
block between W. Flagler Street and S.W. 15t Street and between S.W. 7`"'
Avenue and S.W. 8`n Avenue. The project will consist of 395
condominiums, 34,000 square feet of retail space and 33,000 square feet
of office space.
LEGAL DESCRIPTION:
Lots 1 and 2, Block 146, according to the Plat thereof, as recorded in
Plat Book B at Page 41 of the Public Records of Miami -Dade County,
Florida less the north 10.0 feet thereof.
And
Lot 3 less the north 10.0 feet for Street right--of-way,Block 146,
according to the Plat thereof, as recorded in Plat Book B at Page 41 of
the Public Records of Miami -Dade County, Florida less the north 10.0
feet thereof.
And
Lots 19 and 20, less the south 10.0 feet for Street right-of--way,Block
146, according to the Plat thereof, as recorded in Plat .Book B at Page
41 of the Public Records of Miami --Dade County, Florida less the north
10.0 feet thereof.
And
Lot 18 less the south 10.0 feet for Street right-of-way,B1ock 146,
according to the Plat thereof, as recorded in Plat Book B at Page 41 of
the Public Records of Miami -Dade County, Florida less the north 10.0
feet thereof.
And
Lot 17 less the south 10.0 feet for Street right-of-way,Block 146,
according to the Plat thereof, as recorded in Plat Book B at Page 41 of
the Public Records of Miami -Dade County, Florida less the north 10.0
feet thereof.
And
Lots 14, 15 and 16, less the south 5.0 feet for Street right-of--
way,Block 146, according to the Plat thereof, as recorded in Plat Book
B at Page 41 of the Public Records of Miami -Dade County, Florida less
the north 10.0 feet thereof.
And
Lots 11, 12 and 13, Block 146, according to the Plat thereof, as
recorded in Plat Book B at Page 41 of the Public Records of Miami -Dade
County, Florida less the north 10.0 feet thereof.
2, DRAINAGE:
Once the project has been fully developed the site will consist of 88
96.
impervious areas and 12 o pervious areas. This site will have a
stormwater runoff from the building roof, paved surface areas, deck
areas and landscape areas.
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The weighted runoff coefficient using the Rational Method is as
follows;
Cw;
Description Area C (A) (C)
Pervious 0.25 0.4 0.10
Impervious 1.84 0.9 1.66
Total 2.09 1.76
Cw = 1.76 / 2.09 = 0.84
The site will be developed with several catch basins (inlets) through
out to collect the stormwater. The rainfall runoff will be directed
towards these proposed catch basins by sloping the paved areas towards
these catch basins. Furthermore, the roof runoff will be collected and
piped to the catch basins thru storm drainage pipes.
Once the stormwater has been collected at the catch basins, they will
be directed via storm pipes to the proposed drainage wells. These
drainage wells will then dispose of the stormwater into the underlying
soil strata. The proposed wells will consist of 24" diameter wells with
their corresponding collection boxes.
This stormwater drainage system will be designed as per the City of
Miami Public Works Department and the Department of Environmental
Resources Management (DERM) standard policies for stormwater retention.
The calculations will be based on a 5 year 1-day storm event. Please
note that the proposed stormwater drainage system will comply with the
requirement of providing pollution retardant baffles.
The following is the preliminary drainage calculations for this project
using the 5 year storm event.
Total Net Area: 91,000 sq. ft = 2.09 acres
Weighted Runoff Coefficient: 0.84
Intensity of Rainfall: 6.7 inches per hour
Runoff Q = c i a = (0.84) (6.7) (2.09)
= 11.76 cfs = 5,279 gallons per minute
Based on the standard usage of 1 well per acre, this site will provide
a minimum of 2 wells and possibly three wells.
Please note that once construction documents are prepared the number of
wells may increase to three if the existing and proposed site
elevations dictate it.
3. WATER DISTRIBUTION:
Miami --Dade Water & Sewer Department (M-DWASD) records show that the
site currently has an existing six (6) inch water main fronting on
W.Flagler Street and also on S.W. 8ti Avenue. The property also has a
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twelve (12) inch water main fronting on S.W. 2" Street and also on S.W.
7h Avenue..
Based on the current standards from the Miami --Dade Water & Sewer
Department, a water main improvement would most likely be required
along west Flagler Street The current standards require Chat a high
rise development as well as commercial developments must have a twelve
(12) inch water main abutting all public frontage. The point of
connection for the new water main would be on S.W. 7th Avenue where a
twelve (12) inch water main exists. The actual requirements will be
determined upon receiving a water & sewer availability letter from the
department.
The proposed building water and fire services will be connected to the
new twelve (12) inch water main. Please note that additional fire
hydrants (if required) will also be connected to either the existing
water main or the new water main improvements.
The anticipated water demand based on current M-DWASD standards is as
follows;
Condominiums: 200 gallons per day (gpd) per apartment
Office Space: 10 gallons per day (gpd) per every 100 square feet
Retail Space: 5 gallons per day (gpd) per every 100 square feet.
Therefore the total water usage demand for this project is as follows;
Condominiums 395 units @ 200 gpd = 79,000 gpd
Office Space 33,000 sq. ft. / 100 sq. ft. * 10 3,300 gpd
Retail Space 34,000 sq. ft. / 100 sq. ft. * 5 = 1,700 gpd
TOTAL: 84,000 gpd
4. SANITARY SEWER DISTRIBUTION:
The site currently has a eight (8) inch gravity sanitary sewer along
West Flagler Street. There is also an eight (8) inch gravity sewer
along S.W. 7`h Avenue and 8th Avenue. Along S.W. 1st street there is a ten
(10) inch gravity sewer. Therefore the property has sewer available
along all property frontages.
The anticipated sewer demand based on current M-DWASD standards is as
follows;
Condominiums: 200 gallons per day (gpd) per apartment
Office Space: 10 gallons per day (gpd) per every 100 square feet
Retail Space: 5 gallons per day (gpd) per every 100 square feet.
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Therefore the total sewer usage demand for this project is as follows;
Condominiums 395 units @ 200 gpd
Office Space 33,000 sq. ft. / 100 sq. ft. * 10
Retail Space 34,000 sq. ft. / 100 sq. ft. * 5
= 79,000 gpd
3,300 gpd
1,700 gpd
TOTAL: 84,000 gpd
Using a peak factor of 2.5 this site will generate a total sewage
demand of 210,000 gallons per day.
5. SOLID WASTE GENERATION:
Solid Waste generated from this proposed project will be collected in
trash dumpster containers for both refuse and recycling. Regular
service will be provided thru a private hauling company or thru the
City of Miami Solid Waste Department.
The total daily volumes from this site for solid waste disposal is as
follows;
RESIDENTIAL CONDOMINIUMS:
Rate 1.5 tons per year per Condominium units
395 units x 1.5 tons/year = 592.5 tons per year
= 1.63 tons per day
= 3,246 1bs per day
COMMERCIAL DEVELOPMENT:
Rate 2.5 tons per year per square feet
67,000 square feet x 3.5 tons/year = 167,500 tons per year
= 459 tons per day
= 918,000 1bs per day
TOTAL WASTE GENERATED = 168,092 tons per year
= 460 tons per day
= 920,000 lbs per day