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HomeMy WebLinkAboutFORT COLLINS MONTESSORI SCHOOL - FDP200002 - DOCUMENT MARKUPS - ROUND 3 - DRAINAGE REPORTPrepared For: Hauser Architects, P.C. 3780 East 15th Street, Suite 201 Loveland, CO 80538 970-669-8220 Prepared By: Coffey Engineering & Surveying, LLC 4045 St. Cloud Drive, Suite 180 Loveland, CO 80538 970-622-2095 Project No. 2259.03 December 17, 2019 FINAL DRAINAGE REPORT FORT COLLINS MONTESSORI SCHOOL LOT 1, MONTESSORI SUBDIVISION FORT COLLINS, CO 80526 Project: Basin ID: Design Information (input): Bottom Length of Weir L = 20.00 feet Angle of Side Slope Weir Angle = 45.00 degrees Elev. for Weir Crest EL. Crest = 5,088.60 feet Coef. for Rectangular Weir Cw = 2.60 Coef. for Trapezoidal Weir Ct = 2.20 Calculation of Spillway Capacity (output): Water Rect. Triangle Total Total Surface Weir Weir Spillway Pond Elevation Flowrate Flowrate Release Release ft. cfs cfs cfs cfs (linked) (output) (output) (output) (output) 5083.60 0.00 0.00 0.00 0.00 5084.00 0.00 0.00 0.00 0.00 5084.50 0.00 0.00 0.00 0.00 5085.00 0.00 0.00 0.00 0.00 5085.50 0.00 0.00 0.00 0.00 5086.00 0.00 0.00 0.00 0.00 5086.50 0.00 0.00 0.00 0.00 5087.00 0.00 0.00 0.00 0.00 5087.50 0.00 0.00 0.00 0.00 5088.00 0.00 0.00 0.00 0.00 5088.60 0.00 0.00 0.00 0.00 5089.10 18.38 0.39 18.77 18.77 5089.60 52.00 2.20 54.20 54.20 STAGE-DISCHARGE SIZING OF THE SPILLWAY Fort Collins Montessori School Detention Pond System Detention Pond Outlet Design File_v2.35.xls, Spillway 2/18/2020, 2:17 PM LID REQUIREMENTS TOTAL IMPERVIOUS AREA ON SITE 93,654 SQ FT REQUIRED TREATMENT AREA (75%) 70,240 SQ FT TOTAL IMPERVIOUS AREA TREATED BY LID 75,358 SQ FT (80%) BASIN 1 BASIN 2 BASIN 3 BASIN 4 AREA (ACRES) 0.72 1.95 0.59 0.64 IMPERVIOUS AREA (ACRES) 0.54 0.78 0.42 0.41 PERCENT IMPERVIOUS (%) 74 41 71 62 PERCENT OF IMPERVIOUS AREA (%) 25.1 36.3 19.5 19.1 REQUIRED WQCV (INCHES) 0.235 0.146 - 0.194 LID VOLUME REQUIRED (CU. FT.) 738 1240 - 542 LID VOLUME PROVIDED (CU. FT.) 774 1332 - 576 REQUIRED FLAT AREA (SQ. FT) 464 697 - 346 PROVIDED FLAT AREA (SQ. FT) 508 1190 - 378 BASIN SUMMARY Project: Basin ID: Design Information (Input): #1 Horiz. #2 Horiz. #1 Vert. #2 Vert. Circular Opening: Diameter in Inches Dia. = inches OR Rectangular Opening: Width in Feet W = 3.00 1.23 ft. Length (Height for Vertical) L or H = 3.00 1.40 ft. Percentage of Open Area After Trash Rack Reduction % open = 50 100 % Orifice Coefficient Co = 0.67 0.60 Weir Coefficient Cw = 3.00 Orifice Elevation (Bottom for Vertical) Eo = 5089.30 5,087.04 ft. Calculation of Collection Capacity: Net Opening Area (after Trash Rack Reduction) Ao = 4.50 1.72 sq. ft. OPTIONAL: User-Overide Net Opening Area Ao = sq. ft. Perimeter as Weir Length Lw = 9.00 ft. OPTIONAL: User-Overide Weir Length Lw = ft. Top Elevation of Vertical Orifice Opening, Top = 5088.44 ft. Center Elevation of Vertical Orifice Opening, Cen = 5087.74 ft. Horizontal Orifices Vertical Orifices Labels Water WQCV #1 Horiz. #1 Horiz. #2 Horiz. #2 Horiz. #1 Vert. #2 Vert. Total Target Volumes for WQCV, Minor, Surface Plate/Riser Weir Orifice Weir Orifice Collection Collection Collection for WQCV, Minor, & Major Storage Elevation Flow Flow Flow Flow Flow Capacity Capacity Capacity & Major Storage W.S. Elevations ft cfs cfs cfs cfs cfs cfs cfs cfs Volumes (input) (linked) (User-linked) (output) (output) (output) (output) (output) (output) (output) (link for goal seek) 5088.30 0.00 0.00 0.00 0.00 0.00 5.92 0.00 0.00 5088.50 0.00 0.00 0.00 0.00 0.00 7.22 0.00 0.00 5088.75 0.00 0.00 0.00 0.00 0.00 8.32 0.00 0.00 5089.00 0.00 0.00 0.00 0.00 0.00 9.30 0.00 0.00 5089.30 0.00 0.00 0.00 0.00 0.00 10.34 0.00 0.00 WQCV 5089.50 0.00 2.41 10.82 0.00 0.00 10.99 0.00 2.41 5089.75 0.00 8.15 16.23 0.00 0.00 11.74 0.00 8.15 5090.00 0.00 15.81 20.24 0.00 0.00 12.45 0.00 12.45 5090.30 0.00 27.00 24.20 0.00 0.00 13.25 0.00 13.25 Top of RG Routing 3: Single Stage - Water flows through WQCV plate and #1 horizontal opening into #1 vertical opening. This flow will be applied to culvert sheet (#2 vertical & horizontal openings is not used). STAGE-DISCHARGE SIZING OF THE WEIRS AND ORIFICES (INLET CONTROL) Fort Collins Montessori School Rain Garden 1 Current Routing Order is #3 W.S. EL. WQ W.S. EL. Minor W.S. EL. Major WQ H1 H2 V1 V2 Routing Order #1 (Standard) V1 W.S. EL. WQ W.S. EL. Design Storm WQ H1 Routing Order #3 (Single Stage) Routing Order #4 Project: Basin ID: Design Information (Input): #1 Horiz. #2 Horiz. #1 Vert. #2 Vert. Circular Opening: Diameter in Inches Dia. = inches OR Rectangular Opening: Width in Feet W = 3.00 1.19 ft. Length (Height for Vertical) L or H = 3.00 1.48 ft. Percentage of Open Area After Trash Rack Reduction % open = 50 100 % Orifice Coefficient Co = 0.67 0.60 Weir Coefficient Cw = 3.00 Orifice Elevation (Bottom for Vertical) Eo = 5089.25 5,085.91 ft. Calculation of Collection Capacity: Net Opening Area (after Trash Rack Reduction) Ao = 4.50 1.76 sq. ft. OPTIONAL: User-Overide Net Opening Area Ao = sq. ft. Perimeter as Weir Length Lw = 9.00 ft. OPTIONAL: User-Overide Weir Length Lw = ft. Top Elevation of Vertical Orifice Opening, Top = 5087.39 ft. Center Elevation of Vertical Orifice Opening, Cen = 5086.65 ft. Horizontal Orifices Vertical Orifices Labels Water WQCV #1 Horiz. #1 Horiz. #2 Horiz. #2 Horiz. #1 Vert. #2 Vert. Total Target Volumes for WQCV, Minor, Surface Plate/Riser Weir Orifice Weir Orifice Collection Collection Collection for WQCV, Minor, & Major Storage Elevation Flow Flow Flow Flow Flow Capacity Capacity Capacity & Major Storage W.S. Elevations ft cfs cfs cfs cfs cfs cfs cfs cfs Volumes (input) (linked) (User-linked) (output) (output) (output) (output) (output) (output) (output) (link for goal seek) 5088.25 0.00 0.00 0.00 0.00 0.00 10.72 0.00 0.00 5088.50 0.00 0.00 0.00 0.00 0.00 11.53 0.00 0.00 5088.75 0.00 0.00 0.00 0.00 0.00 12.28 0.00 0.00 5089.00 0.00 0.00 0.00 0.00 0.00 12.99 0.00 0.00 5089.25 0.00 0.00 0.00 0.00 0.00 13.66 0.00 0.00 Grate 5089.50 0.00 3.38 12.10 0.00 0.00 14.31 0.00 3.38 5089.75 0.00 9.55 17.11 0.00 0.00 14.92 0.00 9.55 5090.00 0.00 17.54 20.95 0.00 0.00 15.51 0.00 15.51 5090.25 0.00 27.00 24.20 0.00 0.00 16.08 0.00 16.08 Top of RG Routing 3: Single Stage - Water flows through WQCV plate and #1 horizontal opening into #1 vertical opening. This flow will be applied to culvert sheet (#2 vertical & horizontal openings is not used). STAGE-DISCHARGE SIZING OF THE WEIRS AND ORIFICES (INLET CONTROL) Fort Collins Montessori School Rain Garden 3 Current Routing Order is #3 W.S. EL. WQ W.S. EL. Minor W.S. EL. Major WQ H1 H2 V1 V2 Routing Order #1 (Standard) V1 W.S. EL. WQ W.S. EL. Design Storm WQ H1 Routing Order #3 (Single Stage) Routing Order #4 Culvert Report Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Tuesday, Feb 18 2020 Equalizer Pipe-Dentention Pond 1 to Spillway Invert Elev Dn (ft) = 5086.20 Pipe Length (ft) = 66.00 Slope (%) = -3.91 Invert Elev Up (ft) = 5083.62 Rise (in) = 24.0 Shape = Circular Span (in) = 24.0 No. Barrels = 1 n-Value = 0.013 Culvert Type = Circular Culvert Culvert Entrance = Smooth tapered inlet throat Coeff. K,M,c,Y,k = 0.534, 0.555, 0.0196, 0.9, 0.2 Embankment Top Elevation (ft) = 5090.10 Top Width (ft) = 40.00 Crest Width (ft) = 20.00 Calculations Qmin (cfs) = 18.65 Qmax (cfs) = 18.65 Tailwater Elev (ft) = 5088.6 Highlighted Qtotal (cfs) = 18.65 Qpipe (cfs) = 18.65 Qovertop (cfs) = 0.00 Veloc Dn (ft/s) = 5.94 Veloc Up (ft/s) = 5.94 HGL Dn (ft) = 5088.60 HGL Up (ft) = 5089.05 Hw Elev (ft) = 5089.71 Hw/D (ft) = 3.04 Flow Regime = Outlet Control V2 V1 H1 WQ W.S. EL. Major W.S. EL. Minor W.S. EL. WQ W.S. EL. Emergency Spillway Emergency Overflow into Pipe- H2 V2 H1 WQ W.S. EL. Major W.S. EL. Minor W.S. EL. WQ V1 Routing Order #2 Rain Garden 3_v2.35.xls, Outlet 2/17/2020, 2:59 PM V2 V1 H1 WQ W.S. EL. Major W.S. EL. Minor W.S. EL. WQ W.S. EL. Emergency Spillway Emergency Overflow into Pipe- H2 V2 H1 WQ W.S. EL. Major W.S. EL. Minor W.S. EL. WQ V1 Routing Order #2 Rain Garden 1_v2.35.xls, Outlet 2/17/2020, 2:51 PM