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Home My WebLink AboutSite Utility Study• E KUBIK AT MORNINGSIDE MAJOR USE SPECIAL PERMIT SITE UTILITY STUDY PREPARED FOR LAB Group By: THE CORRADINO GROUP 4055 NW 97th Avenue Miami, FL 33178 September 2003 • • KUBIK AT MORNINGSIDE Site Utility Study Introduction The Kubik at Morningside Project will include the construction and development of two individual towers located south of N.E. 58th Street between N.E. 4th Court and Biscayne Boulevard. The two towers will be comprised of residential units, as well as, commercial and office space. The towers will also consist of 4 levels of parking complemented with a valet service and parallel parking throughout. The total site covers approximately 2.54 acres. I. Drainage Existing Drainage The site is currently occupied by existing buildings to be removed, and the existing drainage system consists of some sparsely located inlets and sections of interconnected trench drain. Also some drainage consists of surface percolation with potential overflow to the adjacent City right -of --way during more extreme rainfall events. Proposed Drainage System The primary drainage system for the project will consist of drainage wells, which will allow the storm runoff to be fully contained and disposed of on site. The project will be designed consistent with a 5-year design storm, DERM Water Control section D-4, part 2 of Miami - Dade County Public Works Department. It is currently anticipated that three 24" drainage wells will provide sufficient capacity for the project. The final drainage design for the project will provide a drainage system consistent with the above criteria, and consistent with all approval and permitting requirements for the project. Preliminary drainage computations for the project are provided in Table 1, below, which includes the basis for design. Kubik at Morningside Site Utility Study Page 1 • Wells Table 1 Drainage Calculations Runoff Generation Total Net Site Area 2.54 Acres Total Impervious Area (Incl. Wall areas) 102,967 sf = 2.37 Acres Roof Area 79,541 sf— 1.83 Acres Exterior Wall Area (173 East Wall Areas) 23,426 sf = 0.54 Acres f 175'--4"x (226'-7" + 174'-3')]/3 Pervious Area (green areas) 31119 sf 0.714 Acres Average Runoff Coefficient Impervious Site Area = 2.37 x 0.95 — 2.252 Pervious Site Area = 0.714 x 0.30 = 0.214 Average Runoff Coefficient, C = (2.252+0.214) / 3.084 = 0.8 Design Storm 5 Year Return Frequency Time of Concentration 10 min. Rainfall Intensity 6.10 in/hr Peak Runoff Q = CIA = (0.8)(6.10)(3.084) = 15.05 cfs Assume each 24" diameter well flows at 480 g.p.m.Iper ft of head (As per Jaffer Associates) 480 g.p.m./448.8 = 1.07 cfs Peak Runoff/Flow Per Well = 15.05 cfs/(Ave. 6 ft of head x 1.07 cfs) = 2.34 wells Provide 3 - 24" Diameter Detention Tank Design Criteria: 1.5 minute (90 sec) detention time per detention structure Volume of Tank required for (15.05 cfs x 90 sec.)/3 =451.5 cubic ft/tank or 3;378 gallon each Kubik at Morningside Site Utility Study Page 2 • • Interior Tank Dimensions: 8' (width) x 6' (height) x 10" (length) = 480 cubic feet each Provide 1 tank for each well, of 480 c.f. volume each Kubik at Morningside Site Utility Study Page 3 • • • II. Water Distribution System The Miami -Dade Water and Sewer Department (M-DWASD) owns and operates the following water mains in the vicinity of the project. (See Appendix) Location Between Water Main(s) NE 4th Court NE 55th Terrace to NE 57th Street (West side of the Project) 12" Biscayne Boulevard NE 55th Terrace to NE 59th Street (East side of the Project) 6" Sanitary Sewer Collection System The Miami -Dade Water and Sewer Department (M-DWASD) owns and operates the following sanitary sewer mains in the vicinity of the project. (See Appendix) Location Between Water Main(s) NE 4th Court NE 55th Terr. to NE 59th St. (West side of the Project) 8" (Gravity) 48" Force Main Biscayne Boulevard NE 57th St. to NE 59th St. (East side of the Project) 8" (Gravity) NE 58th Street NE 4th Ct. to Biscayne Blvd. (North side of the Project) 8" (Gravity) The Kubik at Momingside Project is projected to create a water demand of 62,7€12 gallons per day (GPD) as per Chapter 24 of the Code of Miami -Dade County, Section 24-13. n order to accommodate for this demand, both the water and sanitary sewer connections to serve the project shall be coordinated with the Miami -Dade Water and Sewer Department (M-DWASD), to ensure that the existing system has adequate capacity. (Refer to the attached M-DWASD forms) Kubik at Morningside Site Utility Study Page 4 • • • IV. Solid Waste Generation Solid waste generated by this project will be collected in standard on -site containers for refuse and recyclables. Regular pick-up service will be provided either by private hauling companies and/or by the City of Miami Solid Waste Department, who will transport the waste to Miami - Dade Counties or private disposal and recycling facilities. The volumes of solid waste projected to be generated by the project are shown in Table 4, below. Table 4 Project Solid Waste Generation Residential 290,000 sq.ft. @ 4 lbs./100 sq.ft./day Office/Commercial 30,000 sq.ff. @ 4 lbs/100 sq.ft./day = 11,6001bs/day 1,2001bs/day (0.6 tons/day) 3,3374-K.utric MuspIWord doc12003,O9 Site Utitity.doc Kubik at Morningside Site Utility Study Page 5 Prepared for: Lab Group Developers Prepared by: THE CoRRADINQ GROUP September 20 • • • KUBIK AT MORNINGSIDE MAJOR USE SPECIAL PERMIT SITE UTILITY STUDY PREPARED FOR. LAB Group By: THE CORRADINO GROUP 4055 NW 97th Avenue Miami, FL 33178 September 2003 • • • KUBIK AT MORNINGSIDE Site Utility Study Introduction The Kubik at Morningside Project will include the construction and development of two individual towers located south of N.E. 58th Street between N.E. 41t Court and Biscayne Boulevard. The two towers will be comprised of residential units, as well as, commercial and office space. The towers will also consist of 4 levels of parking complemented with a valet service and parallel parking throughout. The total site covers approximately 2.50 acres. I. Drainage Existing Drainage The site is currently occupied by a one story building to be removed, and the existing drainage system consists of some sparsely located inlets and sections of interconnected trench drain. Also some drainage consists of surface percolation with potential overflow to the adjacent City right-of-way during more extreme rainfall events. Proposed Drainage System The primary drainage system for the project will consist of drainage wells, which will allow the storm runoffto be fully contained and disposed of on site. The project will be designed consistent with a 5-year design stoma, DERM Water Control section D-4.. part 2 of Miami - Dade County Public Works Department. It is currently anticipated that three 24" drainage wells will provide sufficient capacity for the project. The final drainage design for the project will provide a drainage system consistent with the above criteria, and consistent with all approval and permitting requirements for the project. Preliminary drainage computations for the project are provided in Table 1, below, which includes the basis for design. Kubik at Morningside Site Utility Study Page 1 • • • Table 1 Drainage Calculations Runoff Generation Total Net site Area (Not including Exterior Wall Areas) Total Impervious Area (Incl. Wall areas) = 2.03 Acres Roof Area Exterior Wall Area (1/3 East Wall Areas) [175'-4"x (226'-7" + 174'-3"))f3 Pervious Area (green areas) Average Runoff Coefficient Impervious Site Area — 2.03 x 0.95 Pervious Site Area --: 0.714 x 0.30 108,965 sf = 2.50 Acres 88,117 sf 64,691 sf = 1.49 Acres 23,426 sf = 0.54 Acres 31,119 sf = 0.714 Acres 1.929 0.214 Average Runoff Coefficient, C = (1.929+0.214) / 2.744 = 0.781 Design Storm 5 Year Return l;recluertcy Time of Concentration 10 min. Rainfall Intensity 6.10 inlhr Peak Runoff Q = CIA = (0.781)(6.10)(2.744) = 13.07 cfs Assume each 24" diameter well flows at 480 g.p.m./per ft of bead (As per Jaffer Associates) 480 g.p.m.. 448.8 = 1.07 cfs Peak Runoff/Flow Per Well = 13.07 cfsi(Ave. 6 ft of bead x 1.07 cfs)- 2.04 wells Provide 3 - 24" Diameter Wells Kubik at Morningside Site Utility Study Page 2 • • • Detention Tank Design Criteria: 1.5 minute (90 sec) detention time per detention structure Volume of Tank required for (13.07 cfs x 90 sec.)/3 —392.1 cubic ft tank or 2,933 gallon each Interior Tank Dimensions: 8' (width) x 5' (height) x 10' (length) = 400 cubic feet each Provide 1 tank for each well, of 400 c.f. volume each Kubik at Morningside Site Utility Study page 3 • • II. Water Distribution System The Miami -Dade Water and Sewer Department (M-DWASD) owns and operates the following water mains in the vicinity of the project. (See Appendix) Location Between Water Main(s) NE 4th Court NE 55th Terrace to NE 57th Street (West side of the Project) 12" Biscayne Boulevard NE 55th Terrace to NE 59th Street (East side of the Project) 6" III. Sanitary Sewer Collection System The Miami -Dade Water and Sewer Department (M-DWASD) owns and operates the following sanitary sewer mains in the vicinity of the project. (See Appendix) Location Between Water iViain(s) NE 4th Court NE 55th Terr. to NE 59th St. (West side of the Project) 8" (Gravity) 48" Force Main Biscayne Boulevard NE 57th St. to NE 59th St. (East side of the Project) 8" (Gravity) NE 58`' Street NE 4th Ct. to Biscayne Blvd. (North side of the Project) 8" {Gravity) The Kubik at Morningside Project is projected to create a water demand of 62,702 gallons per day (GPD) as per Chapter 24 of the Code of Miami -Dade County. Section 24-13. In order to accommodate for this demand, both the water and sanitary sewer connections to serve the project shall be coordinated with the Miami -Dade Water and Sewer Department (M-DWASD), to ensure that the existing system has adequate capacity. (Refer to the attached M-DWASD forms) Kubik at Morningside Site Utility Study Page 4 • • • IV. Solid Waste Generation Solid waste generated by this project will be collected in standard on -site containers for refuse and recyclahles. Regular pick-up service will he provided either by private hauling companies and/or by the City of Miami Solid Waste Department, who \yill transport the waste to Miami -Dade Counties or private disposal and recycling facilities. The volumes of solid waste projected to be generated by the project are shown in Table 4. below. Table 4 Project Solid Waste Generation Residential 248.211 sq.ft. raj 4 lbs/100 sq.lt./day -- 9929 lbs/day Office/Commercial 40,520 sq.ft. _ ; 4 lbs/100 sq.ft./day 1621 lbs/dd\° (5.78 tons/day) J-%3374 -Kub c A4usp'.Word docl2JIRJ O9 Site Utility ,Soc Kubik at Momingside Site Utility Study Page 5