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HomeMy WebLinkAboutSW3230602_Plansheet - Grading/Drainage Plan_20240104 \ PHASE 2 -AREA RESERVED �1 / /�+ + + + ,�+ + + / /+, + + + + FOR FUTURE DEVELOPMENT ' + + ,� + LIJ / � w Q coLU a1 %+ + + + + + + +" Z O oc Z �4 \ C3 / W o PHASE 2 1 / / + +/+ + + cn ED co / + o + + + + Z Wz � � a PHASE 1 I / / ��+ + + + + + + w z + / + +' / w ® � c¢ Q + �+ + +' + / J z / + + + +' + o I I / + '/ + + + + / LU /4 + +' + + +/+ + + + + + 35,STRER / + /+ + / + + + + / + + + +' + \�IIIIIIII/// + +/ + +, + W I / �+ + /+ + •+ / STREAM /+ f� + + CENTERLINE / �:�O PROP. SEPTIC l PROP.40'TREE Q/� + /� + L 9<' SAVE AREA �' +/ + +' _ SEA J o I DRAIN FIELD, TYP. + / _ �"+,\ + +. . \ (APPROXIMATE) 8 / + + + + - 04550 = N I o mod+ + +" \ + ,' \ � :, •y.. INS .. �� G \ LL I I N m I PROP. WELL, TYP. + + + + + + •,�//FI'V C ��� z I I I (APPROXIMATE) ��• + +/ + + \ / /l I I I I I I I I b 1/03/2024 6 I / + +/+ + + C I �+ + h� + A PORTION OF C • / + + + TAX PIN:01144012B (A PORTION OF THE PROPERTY \ �6 +/ + DESCRIBED IN BK.76-73) cq F- PERMANENT SWALE 51 .513.17 / + + + + F- z LU "CAVALRY SOUTH" «� I �,.. / /'+ + / + (REF. TYP. SECTION �' I EX.SWALE"1C" '` /' + + + + / p OU ON THIS SHEET o 513.00 (REF.SECTION ." �d"+ + + \ U - ON THIS SHEET) ',j:rr. /'+ + + + ' \ a) / 513512.95 512.85 /+ / a z O 3V OF 15"HP @ 1.22% /+ + + + INV. IN:500.40 + - 0o PUBLIC R/W TO BE INV. OUT:500.02 + _ - Q O Z W EX.SWALE"1B" 3 DEDICATED TO NCDOT I + + + _ _ - - - / _ 5� + 31'OF 15"HP @ 3.87% + + / 0 - i _ -T (REF.SECTION + (30'WEST OF EX. CENTERLINE) - _ / ++ + �_ - INV. IN:505.82 - + /, _ _ - T - -T LAG Z Z) � _ _ �� z z U ON SHEET C-4.1 � _ _ INV. OUT:504.62 _ - _T U6= z O O - O z z O PROP. 10' l PROP. CLASS 8 - - _ = / / -T-H6 p O O p UTILITY ESMT RIP-RAP APRON ... 'I + - - __ 4 W1=4.5'W2=11.5' + L=10'D5o=6" _ � � T,� T-1 - tie---T-ti6 -T-H6- -T T-L-16-- T-L6- -T-i6_ - -- T- -=T liG- - - � -o+ 104-FES - - - / 26'OF 15"HP @ 2.74% o INV. IN:499.08 / O rn INV. OUT:498.38 0 0 0 0 - - - - - - - - - - - - - - - I ARMyRD - SR16RIABLE / ° t� 31'OF 15"HP @ 1.77% (EX.WIp NNJ H FROM CENTERLINE / INV. IN:501.70 EX. PROPERTY LINE' INV. OUT:501.15 / CIL EX. DITCH 63'OF 18"RCP @ 0.56%1 APPROX. LOCATION OF h PARCEL ID:01144012Y / CHANNELANALYSIS 29'OF 15"HP @ 6.10% INV. IN:507.65 DRIVEWAY PIPES, TYP. OWNERS:EMERALD POINTE »>Ex Swale 1A-Grassed ho TO BE INSTALLED BY / REALTY&CONSTRUCTION INC 29'OF:5"HP INV. OUT.- f / Name Ex Swale 1A-Grassed INV. OUT:514.77 ZONE:RA-40 Discharge 1.68 I o HOME BUILDER Channel Slope 0.041 Channel Bottom Width 0 Left Side Slope 3 PARCEL ID:01144012X S:EMERALD Uj Right Side Slope 3 / OPOINTEREALTY& \ / Low Flow Liner / CONSTRUCTION INC \ / U L Retardence Class C 6-12 in / ZONE:RA-40 7 � PARCEL ID:01144012W Vegetation Type Mix(Sod and Bunch) / OWNERS:EMERALD \ PARCEL ID:01144012V Vegetation Density Good 65-79% POINTE REALTY& OWNERS:EMERALD / oo Soil Type Silt Loam(SM) / POINTE REALTY& CONSTRUCTION INC PARCEL ID:01144012U CONSTRUCTION INC / ZONE.RA-40 \ / / Unreinforced Vegetation ZONE:RA-40 U g OWNERS:EMERALD POINTE W zCL Normal Permissible Calculated Safety Staple EALTY&CONSTRUCTION INC Phase Reach Discharge velocity ManningsN Remarks - Ix` Depth Shear Stress Shear Stress Factor Pattern ZONE:RA-40 / Underlying Straight 1.68 cfs 2.99 ft/s 0.43 It 0.035 1.34 Ibs/ft2 0.53 Ibs/ft2 2.55 STABLE , cl� O Substrate . v Unreinforced Straight 1.68 cfs 2.99 ft/s 0.43 ft 0.035 4lbs/ft2 1.11 Ibs/ft2 3.61 STABLE Vegetation ' CHANNELANALYSIS � o w � z >>>Ex Swale 1 B-Grassed Name Ex Swale 1B-Grassed Swale ID Drainage Length Average Bottom Side Grassed 10-year Analysis z o Discharge 2.55 Area(ac) (ft) Slope Width(ft) Slope (H:1V) n value Q(cfs) V(fps) Depth(ft) § (n Channel Slope 0.044 Channel Bottom Width 0 Left Side Slope 3 EX. GRADE Right Side Slope 3 Permanent Swale Cavalry S 0.52 116 3.0% 0.0 3.0 0.035 1.56 2.61 0.45 - Z Low Flow Liner Existing Swale 1A 0.56 482 4.1% 515 _ 515 505 EX. GRADE 505 LU 0.0 3.0 0.035 1.68 2.99 0.43 Retardence Class C 6-12 in Type Mix(Sod and Bunch) Existing Swale 1B 0.85 736 4.4% 0.0 3.0 0.035 2.55 3.41 0.50 ------ Vegetation - EX. EOP Vegetation Density Good65-79% Existing Swale 1C 1.04 438 2.2% 0.0 2.5 0.035 3.14 2.86 0.66 �a7 � -g%% Soil Type Silt Loam(SM) PROP. GRADE -9.2:1 Unreinforced Vegetation M _ - PROP. EOP Phase Reach Discharge Velocity Normal ManningsN Permissible Calculated Safety Remarks Staple NOTE: 510 �5.0' 510 500 500 Depth Shear stress shear stress Factor Pattern MAX.ALLOWABLE VELOCITY FOR VEGETATED SWALES IS 4.5 FPS. EX. VEGETATED SLOPES Unreinforced straight 2.55 cfs 3.41 ft/s o.s ft 0.035 4 Ibs/R2 1.37 Ibs/ft2 2.92 STABLE -- ALL SWALE SIDE SLOPES TO BE NO STEEPER THAN 3H:1V UNLESS OTHERWISE NOTED. TO REMAIN UNDISTURBED Vegetation Underlying Straight 2.55 cfs 3.41 ft/s 0.5 ft 0.035 1.34 Ibs/ft2 ' 0.65 Ibs/ft2 ' 2.06 STABLE -- RUNOFF COEFF. C=0.5 USED FOR SINGLE FAMILY LOTS>20,000 SF. (TYP.) Substrate PROP.8"WL Y LO CHANNELANALYSIS 505 505 495 495 I\ »>Ex Swale 1 C-Grassed 4 CK m W Name Ex Swale 1C-Grassed Discharge 3.14 PERMANENT SWALE "CALVARY SOUTH" EXISTING SWALE "1C" ° Channel Slope 0.022 Channel Bottom Width 0 SCALE: 1"=5' SCALE: 1"=5' w m Left Side Slope 2 LINE WITH NORTH AMERICAN GREEN EXISTING VEGETATED SLOPES U O Right Side Slope 3 S75 OR APPROVED EQUAL z Low Flow Liner Retardence Class C 6-12 in �1 Vegetation Type Mix(Sod and Bunch) J Inlet Vegetation Density Good65-79% Location Storm Runoff Pipe Calculations (maximum discharge velocity shall be 10fps) N N Soil Type Silt Loam(SM) Areas I Unreinforced Vegetation ` UL Normal Permissible Calculated Safety Staple m N Phase Reach Discha a VelocityMannin s N Remarks Z � Depth g Shear Stress Shear Stress Factor Pattern Pipe Actual - O ¢ � Unreinforced Straight 3.14cfs 2.86fVs 0.66ft 0.035 41bs/R2 0.91lbs/ft2 4.4 STABLE -- Percent Percent Composite Inlet Combined Pipe Actual m Vegetation I (in/hr) Material Pipe Slope Capacity d/dm Pipe Upstream Downstream Pipe z Underlying Straight 3.14cfs 2.86ft/s 0.66ft 0.035 1.34lbs/ft2 0.42lbs/ft2 3.18 STABLE -- Pipe Name (acres) Pervious Impervious Runoff Discharge Q Discharge o Length Size (in) Vfull (fps) Q/Q-full v/V-full Vpipe Q W Substrate_ _ (o ) (o ) (10-yr) ( ) Qp p ( ) n ( /o) O Q s II ratio ( p ) Time Invert Invert Material ct o 0 /o /o Coeff. C cfs i e cfs ft ( ) fps) ( ) CHANNELANALYSIS >>>Swale Cavalry S-Grassed Name Swale CavalryS-Grassed LOT 1 DWY PIPE 0.23 80% 20% 0.43 6.03 0.6 0.6 0.012 4.34% 29 15 11.9 14.57 0.04 0.15 0.45 5.34 0.09 528.43 527.16 HP Discharge 1.56 C) Channel Slope 0.03 LOT 3 DWY PIPE 0.20 80% 20% 0.43 6.03 0.5 0.5 0.012 2.38% 29 15 8.8 10.78 0.05 0.15 0.45 3.95 0.12 533.95 533.26 HP z z = Channel Bottom Width 3 LOT 4 DWY PIPE 0.19 80% 20% 0.43 6.03 0.5 1.0 0.012 8.80% 29 15 16.9 20.73 0.05 0.15 0.45 7.60 0.19 525.30 522.75 HP Lek Side Slope 3 Right Side Slope 3 171 Q Q Low Flow Liner LOT 5 DWY PIPE 0.17 80% 20% 0.43 6.03 0.4 1.4 0.012 6.10% 29 15 14.1 17.26 0.08 0.17 0.45 6.33 0.26 516.54 514.77 HPW z Retardence Class C6-12 in CAVALRY PIPE 0.73 80% 20% 0.43 6.03 1.9 3.3 0.012 0.56% 63 18 4.8 8.50 0.39 0.41 0.87 4.19 0.25 507.65 507.30 RCP Vegetation Type Mix(Sod and Bunch) ------- W � Vegetation Density Good 65-79% LOT 6 DWY PIPE 0.12 80% 20% 0.43 6.03 0.3 3.7 0.012 3.87% 31 15 11.2 13.75 0.27 0.35 0.82 9.19 0.32 505.82 504.62 HP ° co Soil Type Silt Loam(SM) GRAPHIC SCALE Unreinforced Vegetation LOT 7 DWY PIPE 0.07 80% 20% 0.43 6.03 0.2 3.8 0.012 1.77% 31 15 7.6 9.31 0.41 0.44 0.87 6.60 0.40 501.70 501.15 HP 0 40' 80' Sheet Phase Reach Discharge Velocity Normahl ManningsN Permissible Calculated Safety Remarks Staple Dept Shear stress IShearstressl Factor Pattern LOT 8 DWY PIPE 0.51 80% 20% 0.43 6.03 1.3 5.2 0.012 1.22% 31 15 6.3 7.73 0.67 0.58 1.05 6.62 0.47 500.40 500.02 HP Unreinforced Straight 1.56Cf5 2.61 ft/s 0.45 ft 0.035 41bs/R2 0.841bs/R2 4.79 STABLE -- LOT 9 DWY PIPE 0.12 80% 20% 0.43 6.03 0.3 5.5 0,012 2.26% 31 15 8.6 10.50 0.52 0.50 0.99 8.47 0.54 499.08 498.38 HP Vegetation ( W FEET ) C 4 2 Underlying Straight 1.56 cfs 2.61 ft/s 0.45 ft 0.035 1.34 Ibs/ft2 0.4 Ibs/ft2 3.38 STABLE -- Substrate 1 inch = 40 ft.