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Home My WebLink AboutSDP200800113 Calculations 2008-07-14 (2)DROP INLET AND CURB CUT CALCULATIONS FOR HOLLYMEAD TOWNCENTER - AREA Al July 14, 2008 LOCATION: TMP 32 -44 Albemarle County, Virginia PREPARED BY: Dominion Development Resources, LLC 172 South Pantops Rd. Charlottesville, VA 22911 P: 434.979 -8121 F: 434.979.1681 Chapter 9 - Storm Drains C - ,A c "Q—ek A \ Appendix 9C -14 Performance Curve DI -7 in a Sump ltl -4 E c k t DISCHARGE ( CC'S ) Source: VDOT 1 of 1 VDOT Drainage Manual 1 I -M 5 1 50 1000 Chapter 9 — Storm Drains " "'C_. - A ce.o, A g Appendix 9C -14 Performance Curve DI -7 in a Sump Ski — c, w 14.5 DISCHARGE (CFS) UC : b.7-s (SOU;^ I ,c -- 4:. 1e c Source: VDOT 1 of 1 VDOT Drainage Manual Chapter 9 —Storm Drains ,d, o c, A\ Appendix 9C -14 Performa Curve DI -7 in a Sump 7 LL W 0 F L5 N Source: VDOT 1 of 1 VDOT Drainage Manua/ Li t v %.I k Ir I I %J" % 41 Ij Chapter 9 - Storm Drains ETC_ - ke ze A Appendix 9C -14 Performance Curve DI -7 in a Sump U_ LU 0 DISCHARGE ( CFS ) l.dC "' V l ° "4 ' ..d 'P't S"} 1 • O 16-} p . 1 i C'C <j Source: VDOT 1 of 1 VDOT Drainage Manua/ V 3 w Jx.R i S.` LF MC . Chapter 9 — Storm Drains " C,- Acq_c I Appendix 9C-14 Performance Curve DI-7 in a Sump DISCHARGE ( GK'S ) Source: VDOT 1 Of 1 VDOT Drainage Manual I I V ;L)V 1VV Chapter 9 — Storm Drains Vr C . A Appendix 9C -14 Performance Curve 13I -7 in a Sump RJR - G 'a z I. U- z 1.0 LU 0 0.5 0* . II PERIMETERR = 12.8 FT I U 1 5 10 50 100 DISCHARGE ( CFS ) Source: VDOT 1 of 1 VDOT Drainage Manual Channel Report Hydraflow Express Extension for AutoCAD® Civil 3DO 2008 by Autodesk, Inc. Curb Cut @ Biofilter 3 Rectangular Area (sqft) Bottom Width (ft)2.00 Total Depth (ft)0.50 Invert Elev (ft)519.35 Slope ( %)2.00 N -Value 0.016 Calculations Compute by:Known Q Known Q (cfs)2.03 Thursday, Jul 10 2008 Highlighted Depth (ft)0.24 Q (cfs)2.030 Area (sqft)0.48 Velocity (ft/s)4.23 Wetted Perim (ft)2.48 Crit Depth, Yc (ft)0.32 Top Width (ft)2.00 EGL (ft)0.52 Elev (ft) Section 520.00 519.75 519.50 519.25 519.00 0 .5 1 1.5 2 2.5 3 Depth (ft) 0.65 0.40 0.15 0.10 0.35 Reach (ft) Channel Report Hydraflow Express Extension for AutoCADO Civil 3D® 2008 by Autodesk, Inc.Thursday, Jul 10 2008 Curb Cut @ Biofilter #3 Rectangular Highlighted Bottom Width (ft) = 2.00 Depth (ft) =0.33 Total Depth (ft) = 0.50 Q (cfs) =3.300 Area (sqft) =0.66 Invert Elev (ft) = 519.35 Velocity (ft/s) =5.00 Slope ( %) = 2.00 Wetted Perim (ft) =2.66 N -Value = 0.016 Crit Depth, Yc (ft) =0.44 Top Width (ft) =2.00 Calculations EGL (ft) =0.72 Compute by: KnownKnownQ (cfs) = 3.30 0. 1 C . '5-; 1r 1 C3 . s7t j = 3.36 c-Ys c'V C\k et> O Elev (ft) Section 520.00 519.75 519.50 519.25 519.00 0 .5 1 1.5 2 2.5 3 Depth (ft) 0.65 0.40 0.15 0.10 0.35 Reach (ft) Channel Report Hydraflow Express Extension for AutoCAD® Civil 3M 2008 by Autodesk, Inc Curb Cut @ Biofilter #4 Rectangular Bottom Width (ft) Total Depth (ft) Invert Elev (ft) Slope ( %) N -Value 2.50 0.50 517.00 2.00 0.016 Calculations Compute by: Known Q Known Q (cfs) = 2.65 Highlighted Thursday, Jul 10 2008 Depth (ft)0.24 Q (cfs)2.650 Area (sqft)0.60 Velocity (fUs)4.42 Wetted Perim (ft)2.98 Crit Depth, Yc (ft)0.33 Top Width (ft)2.50 EGL (ft)0.54 0.7G , \)V\ r (D, - 7 - 7 ac. = ') , G !! C. ` s Elev (ft) 518.00 ---1 517.75 517.50 517.25 517.00 516.75 Section 5 1 1.5 Reach (ft) 2 2.5 3 Depth (ft) 1.00 0.75 0.50 0.25 M 1 -0.25 3.5 Channel Report Hydraflow Express Extension for AutoCAD® Civil 3130 2008 by Autodesk, Inc.Thursday, Jul 10 2008 Curb Cut @ Biofilter #4 Rectangular Highlighted Bottom Width (ft) = 2.50 Depth (ft)0.33 Total Depth (ft) = 0.50 Q (cfs)4.300 Area (sqft)0.82 Invert Elev (ft) = 517.00 Velocity (ft/s)5.21 Slope ( %) = 2.00 Wetted Perim (ft)3.16 N -Value = 0.016 Crit Depth, Yc (ft)0.46 Top Width (ft)2.50 Calculations EGL (ft)0.75 Compute by: Known Q Known Q (cfs) = 4.30 a 1. . SUi hC }l . 7 r~a.0 t C, Elev (ft) 518.00 517.75 517.50 517.25 517.00 516.75 Section 5 1 1.5 Reach (ft) 2 2.5 3 Depth (ft) 1.00 0.75 0.50 0.25 11C 0.25 3.5 Channel Report Hydraflow Express Extension for AutoCAD® Civil 3D® 2008 by Autodesk, Inc. Curb Cut @ STR -21 Rectangular 0.670 Bottom Width (ft)2.00 Total Depth (ft)0.50 Invert Elev (ft)524.62 Slope ( %)1.00 N -Value 0.016 Calculations 0.23 Compute by:Known Q Known Q (cfs)0.67 Thursday, Jul 10 2008 Highlighted Depth (ft)0.15 Q (cfs)0.670 Area (sqft)0.30 Velocity (ft/s)2.23 Wetted Perim (ft)2.30 Crit Depth, Yc (ft)0.16 Top Width (ft)2.00 EGL (ft)0.23 a - 0- ( -- (0.'.)'tc = 0. `7c--, Elev (ft) Section 526.00 525.50 525.00 524.50 524.00 0 .5 1 1.5 2 2.5 3 Depth (ft) 1.38 0.38 0.12 ME Reach (ft) Channel Report Hydraflow Express Extension for AutoCAD® Civil 3D® 2008 by Autodesk, Inc. Curb Cut @ STR -6 Rectangular 0.750 Bottom Width (ft)2.00 Total Depth (ft)0.50 Invert Elev (ft)524.46 Slope ( %)1.00 N -Value 0.016 Calculations 0.25 Compute by:Known Q Known Q (cfs)0.75 Thursday, Jul 10 2008 Highlighted Depth (ft)0.16 Q (cfs)0.750 Area (sqft)0.32 Velocity (ft/s)2.34 Wetted Perim (ft)2.32 Crit Depth, Yc (ft)0.17 Top Width (ft)2.00 EGL (ft)0.25 C :- C). - 11 e + X ) " (C), 9 = (), - 7 -- C -<, Elev (ft) Section 525.00 524.75 524.50 524.25 524.00 0 .5 1 1.5 2 2.5 3 Depth (ft) 0.54 0.29 0.04 0.21 0.46 Reach (ft) Channel Report Hydraflow Express Extension for AutoCAD® Civil 3D® 2008 by Autodesk, Inc. Upper Curb Cut @ STR -35 Rectangular 0.250 Bottom Width (ft)2.00 Total Depth (ft)0.50 Invert Elev (ft)544.60 Slope ( %)3.20 N -Value 0.016 Calculations 0.13 Compute by:Known Q Known Q (cfs)0.25 Thursday, Jul 10 2008 Highlighted Depth (ft)0.06 Q (cfs)0.250 Area (sqft)0.12 Velocity (ft/s)2.08 Wetted Perim (ft)2.12 Crit Depth, Yc (ft)0.08 Top Width (ft)2.00 EGL (ft)0.13 Elev (ft) Section 546.00 545.50 545.00 544.50 544.00 0 .5 1 1.5 2 2.5 3 Depth (ft) 1.40 0.40 0.10 r . s, Reach (ft) Channel Report Hydraflow Express Extension for AutoCAD® Civil 3D® 2008 by Autodesk, Inc Lower Curb Cut @ STR -35 Rectangular Bottom Width (ft) Total Depth (ft) Invert Elev (ft) Slope ( %) N -Value 2.00 0.50 540.67 3.20 0.016 Calculations Compute by: Known Q Known Q (cfs) = 1.36 Highlighted Thursday, Jul 10 2008 Depth (ft)0.16 Q (cfs)1.360 Area (sqft)0.32 Velocity (ft/s)4.25 Wetted Perim (ft)2.32 Crit Depth, Yc (ft)0.25 Top Width (ft)2.00 EGL (ft)0.44 Elev (ft) Section 542.00 541.50 541.00 540.50 540.00 0 .5 1 1.5 2 2.5 3 Depth (ft) 1.33 0.83 0.33 0.17 0.67 Reach (ft) Channel Report Hydraflow Express Extension for AutoCAD® Civil 31)® 2008 by Autodesk, Inc. Curb Cut @ STR -61A Rectangular 0.140 Bottom Width (ft)2.00 Total Depth (ft)0.50 Invert Elev (ft)515.91 Slope ( %)1.00 N -Value 0.016 Calculations 0.08 Compute by:Known Q Known Q (cfs)0.14 Thursday, Jul 10 2008 Highlighted Depth (ft)0.06 Q (cfs)0.140 Area (sqft)0.12 Velocity (ft/s)1.17 Wetted Perim (ft)2.12 Crit Depth, Yc (ft)0.06 Top Width (ft)2.00 EGL (ft)0.08 Elev (ft) 517.00 Section Depth (ft) 1.09 516.50 516.00 515.50 515.00 Reach (ft) 0.59 M 0.41 0.91 0 .5 1 1.5 2 2.5 3