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HomeMy WebLinkAbout20171067 Ver 1_9) 790260_2017_SF-790260_LITTLE_CREEK_SR1553PDF_20170828B E L O W N O R M A L W A T E R S U R F A C E P L A C E N A T I V E B E D M A T E R I A L Lic. No.: C-2197 919-789-9977 Raleigh, NC 27605 1025 Wade Avenue SEPI Engineering & Construction, Inc. SITE DATA Floodway With Floodway Without Floodway Established? Normal Water Surface Elev. RALEIGH, N. C. DIVISION OF HIGHWAYS Project No. County On Highway Between and N. C. DEPARTMENT OF TRANSPORTATION Recommended Structure Skew Bench Mark is Elev.Datum: Temporary Crossing Data on Existing Structure Channel Right O.B. Hydraulic Design Method Hydrological Method FrequencyDischarge Elev. Elev. Elev.Frequency I.D. No.Proj. Station Character Obtained From Flood Study / Status Flood Study 100 yr. Discharge Data on Structures Up and Down Stream Manning’s n :Left O.B. c.f.s. c.f.s.; CULVERT SURVEY & HYDRAULIC DESIGN REPORT Stream : Date Project Engineer Designed by: : Frequency Design Base Flood Discharge Discharge c.f.s. c.f.s. Recommended Width of Roadway Natural Channel Velocity Design Tailwater Overtopping : : : Stru. No. Date Elev.Est. Freq.Source Period of Knowledge Date Elev.Est. Freq.Source Knowledge Period of Outlet Velocity Allowable HW Elev. Assisted by: Required Outlet Protection Stream Classification (Such as Trout, High Quality Water, etc.) Gage Station No.Period of Records Max. Discharge Date Frequency HYDRAULICS UNIT c.f.s Reviewed by: Recommended Location is (Up, At, Down) Stream from Existing Crossing. Debris Potential:Low Moderate High Drainage Area Source River Basin I . D . N o . P r o j e c t N o . S t r e a m S t r u c . I n v . N o . P D F F i l e Historical Flood Information: DESIGN DATA INFORMATION TO BE SHOWN ON PLANS ADDITIONAL INFORMATION AND COMPUTATIONS 10 Q 25 Q 50 Q 100 Q 500 Qft.;ft.;ft.;ft.;ft. ) 10 (V ) 10 (Vf.p.s.f.p.s. yr. yr. yr. ft. ft. ft. 100 ft.ft. ft. ft. yr. yr. yrs. yrs. ft.ft. yrs. WS Elev.: ft. Statewide Tier Regional Tier Sub-Regional Tier Outlet Control H Remarks Size & Type HW/D dc dc+D 2Ke Inlet Control (ft.) H.W. o LSo h (ft.) H.W. (c.f.s.) Q Total Waterway Opening Waterway Opening Below 100yr. WS EL.s.f.s.f. Total Proposed Waterway Opening s.f.Is a Floodway Revision Required? @River Station 24365 WS EL. Taken @ River Station 24473 E L E V . = 7 5 2 . 4 2 ’ - L - S T A . 1 3 + 0 0 . 0 0 B E G I N G R A D E D S = 3 5 M P H P I = 1 3 + 5 0 . 0 0 E L = 7 5 1 . 8 2 ’ V C = 1 0 0 ’ K = 5 0 L O W P T = 1 3 + 6 0 . 5 5 P I = 1 5 + 1 5 . 0 0 E L = 7 5 3 . 1 1 ’ V C = 9 0 ’ K = 6 0 D S = 3 5 M P H E L E V . = 7 5 4 . 1 4 ’ - L - S T A . 1 5 + 6 0 . 0 0 E N D G R A D E ( + ) 0 . 7 8 1 8 % ( - ) 1 . 2 0 0 0 % ( + ) 2 . 2 9 1 9 % 790260 SEPI ENGINEERING & CONSTRUCTION, INC. 7 7 0 7 6 0 7 5 0 7 4 0 0 5 0 1 0 0 1 5 0 - 5 0 - 1 0 0 - 1 5 0 1 0 0 y r . R E V I S E D D U P L I C A T E E F F E C T I V E C O R R E C T E D E F F E C T I V E ROWAN 17BP.9.R.62SF-790260 LITTLE CREEK SR 1535 WEAVER RD.SR 1533 SR 1541 75 DEG. X BM #1 82’ OF RT -BL- STA. 9+12.00 R/R SPIKE SET IN 14" HACKBERRY 750.98 NAVD 88 N/A 1.52 SQ. MI.USGS STREAMSTATS & QUAD MAPS CHINA GROVE & ENOCHSVILLE YADKIN/PEE-DEE MOSTLY RURAL W/ SOME DEVELOPEMENT 1175 750.5 06/2009 USGS SI REPORT 2009-5158 HEC-RAS V. 4.1.0 = 850 CFS 0.600 = 661 (DA) 50 Q = 692 CFS (700 CFS) 0.606 = 537 (DA) 25 Q = 995 CFS (1000 CFS) 0.594 = 776 (DA) 100 Q = 1368 CFS (1400 CFS) 0.583 = 1,072 (DA) 500 Q = 515 CFS (520 CFS) 0.617 = 398 (DA) 10 Q SIR 2009-5158 RURAL RIDGE and VALLEY-PIEDMONT DESIGN MAINTAINS / IMPROVES LEVEL OF SERVICE. NO STRUCTURES WILL BE ADVERSELY IMPACTED BY THIS PROJECT. THIS PROJECT COMPLIES WITH LOCAL FLOOD PLAIN MANAGEMENT REGULATIONS. DESIGN FOLLOWS SUBREGIONAL TIER GUIDELINES. NOTES: C INDEX NO. 12-110-3 UPSTREAM N/A DOWNSTREAM P324 3 @ 137"X87" CMPA N C G RI D N A D 83 N A 2011 S T R E A M B E D S T R E A M B E D 7 3 5 7 4 5 1 5 P A T T E R S O N S T R E E T T O S R 1 5 3 3 0 . 6 6 M I L E S + / - M I L L E R R O A D T O S R 1 5 0 9 1 . 4 5 M I L E S + / - C B A N K L T T O P O F B A N K R T T O P O F B A N K R T T O P O F B A N K L T T O P O F B R I D G E E X I S T I N G 7 5 5 2 5 - Y R W S E L = 7 4 8 . 9 ’ 1 4 ( N T S ) ( L O O K I N G D O W N S T R E A M ) F L O O D P L A I N B E N C H D E T A I L B E D M A T E R I A L S ; S A N D , S M A L L T O M E D I U M R O C K S , S M A L L B O U L D E R S 2 ’ 2 : 1 2 : 1 E X I S T I N G C H A N N E L V A R I E S 1 ’ T O 1 2 ’ E G E G 2 : 1 M A T T I N G C O I R F I B E R R I P R A P C L A S S ’ I I ’ R I P R A P C L A S S ’ I I ’ C L A S S ’ I I ’ R I P R A P D E N O T E S E X C A V A T I O N M E D I U M R O C K S , S M A L L B O U L D E R S B E D M A T E R I A L S ; S A N D , S M A L L T O N O T T O S C A L E @ U / S F A C E A L O N G C E N T E R L I N E S E C T I O N V I E W O F R C B C I N L E T W / 6 " T O P B E V E L C A S T I N P L A C E H W 6 " S I L L P L A C E R C B C C A S T I N P L A C E R C B C C A S T I N P L A C E H W C A S T I N B E D ( N O T T O S C A L E ) L T T O R T F A C I N G D O W N S T R E A M S T R E A M C R O S S S E C T I O N T H E I N L E T A N D O U T L E T O N L Y N O T E : S I L L S T O B E L O C A T E D A T F L O O D P L A I N B E N C H W I T H C O I R F I B E R M A T T I N G . W I T H C L A S S ’ I I ’ R I P R A P B O U L D E R S A N D L I N E L A Y B A C K B A N K S L O P E S T O 2 : 1 . L I N E S L O P E S S T R E A M B E D T O M A T C H W I D T H O F C U L V E R T . N O T E : E X C A V A T E F L O O D P L A I N B E N C H 0 . 5 ’ A B O V E ( N O T T O S C A L E ) L T T O R T F A C I N G D O W N S T R E A M S T R E A M C R O S S S E C T I O N T H E I N L E T A N D O U T L E T O N L Y N O T E : S I L L S T O B E L O C A T E D A T F L O O D P L A I N B E N C H W I T H C O I R F I B E R M A T T I N G . W I T H C L A S S ’ I I ’ R I P R A P B O U L D E R S A N D L I N E L A Y B A C K B A N K S L O P E S T O 2 : 1 . L I N E S L O P E S S T R E A M B E D T O M A T C H W I D T H O F C U L V E R T . N O T E : E X C A V A T E F L O O D P L A I N B E N C H 0 . 5 ’ A B O V E I N L E T D E T A I L 2 @ 1 0 ’ x 8 ’ R C B C P R O P O S E D - L - - L - O U T L E T D E T A I L 2 @ 1 0 ’ x 8 ’ R C B C P R O P O S E D E G L T E G L T C 2 5 - Y R W S E L = 7 4 8 . 9 ’ Q500 = 1720 CFS Q100 = 1175 CFS Q50 = 960 CFS Q10 = 510 CFS FEMA DISCHARGES 14+26.3 -L- 2 : 1 2 : 1 F A B R I C G E O T E X T I L E F A B R I C G E O T E X T I L E B E D E X I S T I N G E G R T E G R T 2 : 1 2 : 1 2 : 1 2 : 1 F A B R I C G E O T E X T I L E B E D E X I S T I N G F A B R I C G E O T E X T I L E BRIAN A. MAZZOCHI, P.E. OS L G N N OH I P R F S I O N A E N I EER RT CARO L NA SEAL 33719 BRI A N A. MAZZOCHI E -L- FLOW ( 2 - F T T H I C K ) R I P R A P C L A S S ’ I I ’ ( 2 - F T T H I C K ) R I P R A P C L A S S ’ I I ’ ( 2 - F T T H I C K ) R I P R A P C L A S S ’ I I ’ ( 2 - F T T H I C K ) R I P R A P C L A S S ’ I I ’ ( 2 - F T T H I C K ) R I P R A P C L A S S ’ I I ’ ( 2 - F T T H I C K ) R I P R A P C L A S S ’ I I ’ E L E V . 7 4 2 . 4 ’ W S 0 6 / 1 2 / 1 5 E L E V . 7 4 2 . 4 ’ W S 0 6 / 1 2 / 1 5 L I T T L E C R E E K 2 6 0 S F - 7 9 0 2 6 0 1 7 B P . 9 . R . 6 2 7 9 0 2 6 0 2 0 1 7 S F - 7 9 0 2 6 0 L I T T L E C R E E K S R 1 5 3 5 . P D F PAUL SHEPARD POST & SILLS, TIMBER BULKHEADS 1 @ 25’6" TIMBER DECK ON I-BEAMS END BNTS: TIMBER CAPS, X 132132 6.6 7.27.0 7.2 8.1 SEE HEC-RAS MODEL 135 3.9 5.4 CLASS ’II’ RIP RAP 700 1175 25 748.9 750.6 1400 500-752.3 7 5 0 . 6 7 5 2 . 0 0.085 0.0850.06 FEMA 742.4 -- --- B A R R E L L O W F L O W B A R R E L L O W F L O W T O T A L E S T . G E O T E X T I L E A T I N L E T = 3 0 S . Y . T O T A L E S T . C L ’ I I ’ R I P R A P A T I N L E T = 2 3 T O N S T O T A L E S T . E X C A V A T I O N A T I N L E T = 8 2 C . Y . T O T A L E S T . G E O T E X T I L E A T O U T L E T = 2 3 S . Y . T O T A L E S T . C L ’ I I ’ R I P R A P A T O U T L E T = 1 8 T O N S T O T A L E S T . E X C A V A T I O N A T O U T L E T = 3 3 C . Y . E X C A V A T I O N E X C A V A T I O N E X C A V A T I O N E X C A V A T I O N 1/24/2017 HEC-RAS MODEL 790260 LITTLE CREEK.PRJ 100% HYDRAULIC REGION 1 MOA TYPE 2B P E R M I T C O N D I T I O N S . T H E E N G I N E E R A N D M A Y B E S U B J E C T T O A N D R I P R A P A R E S U B J E C T T O A P P R O V A L B Y N A T I V E M A T E R I A L A N D / O R R I P R A P . N A T I V E M A T E R I A L T H E H I G H F L O W B A R R E L S S H A L L B E B A C K F I L L E D W I T H T O A F L A T S U R F A C E T O A L L O W F O R A N I M A L P A S S A G E . S T R E A M B E D M A T E R I A L S H A L L B E P L A C E D A N D L E V E L E D A N I M A L P A S S A G E . T H E T O P S U R F A C E O F T H E N A T U R A L M A T E R I A L S H O U L D B E P L A C E D O N T O P T O F A C I L I T A T E T H E N A T I V E M A T E R I A L . I F R I P R A P I S U S E D , N A T I V E C O N S T R U C T I O N . R I P R A P M A Y B E U S E D T O S U P P L E M E N T F L O O D P L A I N A T T H E P R O J E C T S I T E D U R I N G C U L V E R T M A T E R I A L T H A T I S E X C A V A T E D F R O M T H E S T R E A M B E D O R I N T H E L O W F L O W B A R R E L . N A T I V E M A T E R I A L S C O N S I S T S O F N A T I V E B E D M A T E R I A L S H A L L B E P L A C E D B E T W E E N T H E S I L L S * N O T E : 1 . 5 ’ S I L L 1 ’ S I L L 1 ’ S I L L 1 . 5 ’ S I L L MAINTAIN/IMPROVE LOS 2 @ 10’X8’ RCBC CAST IN PLACE W/ SILLS W/ TOP BEVEL 34’ SHOULDER POINT TO SHOULDER POINT ROWAN/DAVIE CO. B.M.S. B. SCOTT CORNATZER 23 REDELINEATED DFIRM PANEL #5618 REV. 06/16/2009 S I D E S L O P E S = 2 : 1 O R F L A T T E R S I D E S L O P E S = 2 : 1 O R F L A T T E R G R A D E 0 . 6 4 % I N V . E L E V . 7 4 0 . 6 5 S E E D E T A I L 3 C L A S S ’ I ’ R I P R A P R I P R A P @ E M B A N K M E N T C L A S S ’ I I ’ R I P R A P E X C A V A T I O N S E E D E T A I L 3 C L A S S ’ I ’ R I P R A P R I P R A P @ E M B A N K M E N T E X C A V A T I O N C L A S S ’ I I ’ R I P R A P B E N C H F L O O D P L A I N E X C A V A T I O N C L A S S ’ I I ’ R I P R A P C L A S S ’ I I ’ R I P R A P E X C A V A T I O N B E N C H F L O O D P L A I N S R 1 5 3 5 W E A V E R R O A D 1 9 ’ P A V E D R O A D W A Y S R 1 5 3 5 W E A V E R R O A D 1 9 ’ P A V E D R O A D W A Y C A S T I N P L A C E W / S I L L S 2 @ 1 0 ’ X 8 ’ R C B C P R O P O S E D G R A S S G R A S S W O O D S W O O D S P L O T T E D A L O N G C E N T E R L I N E O F C U L V E R T C A S T I N P L A C E W / S I L L S P R O P O S E D 2 @ 1 0 ’ X 8 ’ R C B C S K E W = 7 5 D E G . G . P . E L E V . = 7 5 2 . 4 1 ’ L S T A 1 4 + 2 6 . 3 - L - P L O T T E D A L O N G - L - C E N T E R L I N E C A S T I N P L A C E W / S I L L S P R O P O S E D 2 @ 1 0 ’ X 8 ’ R C B C S K E W = 7 5 D E G . G . P . E L E V . = 7 5 2 . 4 1 ’ L S T A 1 4 + 2 6 . 3 - L - T O P S L A B I N S I D E NO FLOODING REPORTED 7 5 0 . 4 D U P L I C A T E E F F E C T I V E Q25 USED IS CALCULATED FROM SIR 2009-5158 HYDRAULIC REGION 1 WITH THE EXCEPTION OF Q25 FEMA FLOWS WERE USED IN THE DESIGN F R O M U S F A C E O F C U L V E R T M O D E L S @ S E C T I O N 2 4 4 7 3 5 . 2 F T . C O R R E C T E D E F F E C T I V E A N D R E V I S E D 0 . 0 1 F T . F R O M U S F A C E O F E X I S T I N G B R I D G E D U P L I C A T E E F F E C T I V E @ S E C T I O N 2 4 4 6 1 R E M O V E 3 ’ T Y P . @ -L- STA. 13+60.5 OVERTOPPING WILL OCCUR 1 0 0 - Y R W S E L = 7 5 0 . 6 ’ 1 0 0 - Y R W S E L = 7 5 0 . 6 ’ O T ( 5 0 0 Y R - ) W S E L = 7 5 2 . 3 ’ O T ( 5 0 0 Y R - ) W S E L = 7 5 2 . 3 ’ 750.0 1 2 1 3 1 4 1 5 1 6 T 1 5 " H D P E E L E V = 7 7 0 . 6 7 ’ L O W L I N E E L E V = 7 7 7 . 0 1 ’ L O W L I N E E X I S T I N G R / W E X I S T I N G R / W N O # U N K N O W N O W N E R B R E N D A B . W A S H A M D B 9 4 4 P G 4 5 6 W O O D S 3 0 0 P R G R A VEL D R. T O D WELLIN G M A P B O O K 9 9 9 5 P G 2 5 8 0 3 B L - 3 6 8 2 1 8 3 . 9 5 5 4 1 5 1 8 8 4 7 . 2 8 1 3 7 6 0 . 8 6 1 7 + 5 4 . 5 9 2 1 . 2 1 L T 2 7 9 0 2 6 0 - 2 6 8 2 4 1 9 . 6 2 4 7 1 5 1 8 5 7 5 . 5 5 4 3 7 5 0 . 0 7 1 3 + 9 7 . 4 8 1 9 . 9 4 R T 1 7 9 0 2 6 0 - 1 6 8 2 6 6 3 . 6 9 7 3 1 5 1 8 4 2 9 . 3 5 4 1 7 5 8 . 3 9 1 1 + 1 9 . 2 0 2 0 . 2 5 R T - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - P O I N T D E S C . N O R T H E A S T E L E V A T I O N E L S T A T I O N O F F S E T B L L I T T L E C R E E K L I T T L E C R E E K 1 8 " 1 3 1 4 1 5 1 6 1 7 E G L T E G L T E G R T E G R T B R I D G E E X I S T I N G F C C F F F F R = 1 9 , 1 0 0 . 0 0 ’ T = 1 7 3 . 6 3 ’ . 0 5 . 0 4 . 0 3 . 0 2 . 0 5 . 0 4 . 0 3 . 0 2 . 0 1 . 0 0 . 0 1 . 0 2 . 0 6 . 0 6 S E = N C . 0 2 . 0 2 R U N O F F = 4 0 ’ G R A U 3 5 0 T L - 2 G R A U 3 5 0 T L - 2 G R A U 3 5 0 T L - 2 G R A U 3 5 0 T L - 2 2 5 y r . 5 0 y r . 1 0 0 y r . F R E Q U E N C Y P R O P O S E D N A T U R A L E X I S T I N G 1 0 y r . P E R F O R M A N C E T A B L E N C D O T 7 4 8 . 3 7 4 8 . 9 7 4 9 . 7 7 5 0 . 6 7 5 2 . 7 7 4 9 . 1 7 5 0 . 4 7 5 1 . 0 7 5 2 . 0 7 5 3 . 2 7 4 8 . 3 7 5 0 . 3 7 4 9 . 0 7 5 0 . 0 7 5 1 . 1 5 0 0 y r . 5 . 2 F T . F R O M U S F A C E O F C U L V E R T @ S E C T I O N 2 4 4 7 3 P E R F O R M A N C E T A B L E F E M A 1/24/2017