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HomeMy WebLinkAbout20080069 Ver 1_Stormwater Info_20080109Stormwater Drainage Calculations For TownePlace Suites by Marriott 1464 Skibo Road, Fayetteville, NC January 08, 2008 Stormwater Drainage Calculations Prepared for: InterMountain Management, L.L.C. 2301 Tower Drive - Monroe, LA 71201 Prepared by: ENGINEERING -SURVEYING -DESIGNING -DRAFTING Larry King & Associates, R.L.S., P.A. P.O. Box 53787 1333 Morganton Road, Suite 201 I Fayetteville, North Carolina 28305 1 P. (910) 483-4300 F. (910) 483-4052 v~ww.LKandA.com `~~~p~nnin~~~~~ •~ ~1NA ~~• ~•~~0 ~, :' d'~~ ' sg °z i a `~ p`1~'~ W ~ cz~ ,, ,~ ~ ~ ~ ~ TH ~ 1 M p , ` ~ ~ ~ ,,• ..i' V•w~ t ~,~! 6~A 9 ~~ ~.. Jq N of 9 ~„_ r7~ - ~aAr~~z ""/~.AlVDSANDST(~MWATF.k Agp;r~ Thomas S. Spei'cll'it/Jr,/~I'E, PLS ENGINEERING -SURVEYING -DESIGNING -DRAFTING Lany King & Associates, R.L.S., P.A. P. (910) 483-4300 www.LKandA.com F. (910) 483-4052 TOWNEPLACE SUITES 93 ROOM HOTEL STORMWATER NARRATIVE TOWNEPLACE SUITES 93 ROOM HOTEL 1464 SKIBO DRIVE, FAYETTEVILLE, NC JANUARY 08, 2008 The TownePlace Suites 93 Room Hotel is a proposed four-story hotel located on Lot 6B in the Cross Creek Plaza Development. The site is 1.71 acres and is currently an undeveloped grassed area with a small number of trees. The total existing impervious area is 0.03 acres, while the proposed site will have 1.34 acres impervious area. The existing site has an area of isolated wetlands of approximately 0.39 acres. The site is a part of the Sam's Club Store No. 8218-01 project. The Stormwater Management Plan for the Sam's Club #8218-01 project has included the entire Lot 6B for stormwater runoff. The proposed drainage system will covey stormwater runoff into the Sam's Club stormwater system and ultimately into a stormwater detention pond. For post-development the off-site runoff is negligible. The ten-year pre-development discharge generated on-site is approximately 3.7 CFS. The ten-year post-development discharge is calculated to be 10.67 CFS. The Stormwater Management Plan for Sam's Club allows for a total discharge from lot 6B of 11.20 CFS. Page 1 of 1 ~lcC 1~~210$ ENGINEERING-SURVEYING-DESIGNING-DRAFTING DRAINAGE COMPUTATIONS Lany King & Associates, R.L.S., P.A. _ SUBMITTED P.O. Box 53787 PROJECT: TOWNEPLACE SUITES BY: M. LANCE KING 1333 Morganton Road, Suite 201 Fayetteville, North Carolina 28305 LOCATION: FAYETTEVILLE, NC DATE: January 8, 2008 P. (910) 483-4300 F. (910J 483-4052 www.LKandA.com REV. INLET LINE INLET PIPE PIPE SLOPE OUTLET OUTLET TIME (MIN) CONC. I C A Q O 0 MAX VEL REMARKS TYPE FROM TO INVERT LENGTH SIZE % TYPE INVERT O/LAND GUTTER PIPE TIME MIN cfs TOTAL cfs fps DI 503 502 237.17 20.99 15 2.00 DI 236.75 5 7.30 0.80 0.13 0.76 0.76 9.83 4.51 DI 502. 501 236.75 120.13 15 0.70 CB 235.91 5 7.30 0.40 0.03 0.09 0.85 5.81 3.21 DI 504 501 238.00 74.11 15 2.82 CB 235.91 5 7.30 0.80 0.09 0.53 0.53 11.67 4.58 CB 501 500 235.91 89.49 15 0.70 CB 235.28 5 7.30 0.90 0.13 0.85 2.23 5.81 4.19 DI 505 500 238.00 74.07 15 3.67 CB 235.28 5 7.30 0.80 0.06 0.35 0.35 13.31 4.43 CB 500 EX. RCP - - - - - - 5 7.30 0.90 0.23 1.51 4.09 _ _ ___ DI 506 507 238.96 74.73 15 0.35 CB 238.70 5 7.30 0.80 0.06 0.35 0.35 4.11 1.94 CB 507 508 238.70 112.70 15 2.49 CB 235.89 5 7.30 0.80 0.02 0.12 0.47 10.97 4.23 CB 508 509 235.89 49.47 15 0.40 CB 235.69 5 7.30 0.95 0.16 1.11 1.58 4.39 3.12 DI 512 509 238.68 73.47 15 4.07 CB 235.69 5 7.30 0.80 0.12 0.70 0.70 14.02 5.65 CB 509 510 235.69 260.48 18 0.45 CB 234.52 5 7:30 0.90 0.24 1.58 3.85 7.58 4.08 CB 510 511 234.52 33.68 18 0.50 DI 234.35 5 7.30 0.95 0.22 1.53 5.38 7.99 4.58 -: DI 513 511 238:00 :49.87: 15 7.32 DI : 234.35: - 5 7.30 0.80 0.19 1.11 1:11 18.80 7.97 DI 511 EX RCP 234.35 - 18 - EX RCP - 5 7.30 0.40 0.03 0.09 6.58 STMCEP = STORMCEPTOR CB =CATCH BASIN JBX =JUNCTION BOX SWM = STORMWATER HW =HEADWALL DI =DROP INLET EX. =EXISTING MANAGEMENT SYSTEM P:1PD7-044 TOWNEPLACE SUITES BY MARRIOTTIADMINIPERMITSISTORMISTORM-DRAINAGE-CALCS.xIs 1 of 1 1/8/2008 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 503 TO 502 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0200 ft/ft 0.013 0.76 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX Q.94D........ Froude Number..... 0.24 ft 4.51 fps 0.17 sf 0.34 ft 0.0052 ft/ft 19.50 0 9.14 cfs 9.83 cfs 1.93 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 502 TO 501 Solve For Actual Depth Given Input Data: Diameter.......... 1.25 ft Slope ............. 0.007 0 ft/ft Manning's n....... 0.013 Discharge......... 0.85 cfs Computed Results: Depth ............. 0.34 ft Velocity.......... 3.21 fps Flow Area......... 0.26 sf Critical Depth.... 0.36 ft Critical Slope.... 0.005 2 ft/ft Percent Full...... 26.81 Full Capacity..... 5.40 cfs AMAX Q.94D........ 5.81 cfs Froude Number..... 1.16 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 504 TO 501 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0282 ft/ft 0.013 0.53 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX @.94D........ Froude Number..... 0.19 ft 4.58 fps 0.12 sf 0.28 ft 0.0053 ft/ft 15.04 0 10.85 cfs 11.67 cfs 2.24 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 501 TO 500 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0070 ft/ft 0.013 2.23 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX Q.94D........ Froude Number..... 0.56 ft 4.19 fps 0.53 sf 0.60 ft 0.0056 ft/ft 44.76 5.40 cfs 5.81 cfs 1.13 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (C) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 505 TO 500 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0367 ft/ft 0.013 0.35 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX @.94D........ Froude Number..... 0.14 ft 4.43 fps 0.08 sf 0.23 ft 0.0054 ft/ft 11.56 12.38 cfs 13.31 cfs 2.48 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 506 TO 507 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0035 ft/ft 0.013 0.35 cfs Computed Results: Depth ............. velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX Q.94D........ Froude Number..... 0.26 ft 1.94 fps 0.18 sf 0.23 ft 0.0054 ft/ft 20.45 3.82 cfs 4.11 cfs 0.81 (flow is Subcritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 507 TO 508 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0249 ft/ft 0.013 0.47 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... AMAX @.94D........ Froude Number..... 0.18 ft 4.23 fps 0.11 sf 0.27 ft 0.0053 ft/ft 14.62 0 10.19 cfs 10.97 cfs 2.10 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 508 TO 509 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0040 ft/ft 0.013 1.58 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope..... Percent Full...... Full Capacity..... QMAX @.94D........ Froude Number..... 0.54 ft 3.12 fps 0.51 sf 0.50 ft 0.0053 ft/ft 43.16 4.09 cfs 4.39 cfs 0.86 (flow is Subcritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 512 TO 509 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0407 ft/ft 0.013 0.70 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... AMAX @.94D........ Froude Number..... 0.20 ft 5.65 fps 0.12 sf 0.33 ft 0.0052 ft/ft 15.74 0 13.03 cfs 14.02 cfs 2.70 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 509 TO 510 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.50 ft 0.0045 ft/ft 0.013 3.85 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX C? . 9 4 D .. - - ... . Froude Number..... 0.79 ft 4.08 fps 0.94 sf 0.75 ft 0.0054 ft/ft 52.71 0 7.05 cfs 7.58 cfs 0.90 (flow is Subcritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 510 TO 511 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.50 ft 0.0050 ft/ft 0.013 5.38 cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX @.94D........ Froude Number..... 0.95 ft 4.58 fps 1.17 sf 0.89 ft 0.0059 ft/ft 63.08 0 7.43 cfs 7.99 cfs 0.90 (flow is Subcritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Circular Channel Analysis & Design Solved with Manning's Equation Open Channel - Uniform flow Worksheet Name: TOWNEPLACE SUITES Comment: 513 TO 511 Solve For Actual Depth Given Input Data: Diameter.......... Slope ............. Manning's n....... Discharge......... 1.25 ft 0.0732 ft/ft 0.013 l.ll cfs Computed Results: Depth ............. Velocity.......... Flow Area......... Critical Depth.... Critical Slope.... Percent Full...... Full Capacity..... QMAX Q.94D........ Froude Number..... 0.21 ft 7.97 fps 0.14 sf 0.41 ft 0.0052 ft/ft 17.08 0 17.48 cfs 18.80 cfs 3.65 (flow is Supercritical) Open Channel Flow Module, Version 3.3 (c) 1991 Haestad Methods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708