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---------- ------------ -- - ---------------------------------- ---------------------- ----------- ----�----- ------------------ --------------------- ----------- -------- ---------- -- ------------------------------------------------------------ --------------------------- --------------------------
ADDITIONAL INFORMATION AND COMP'UTATIONS ; SITE DATA ; a
� Drainage Area _______ 1_08_ SQ_MI__________ Source _________MC_ DANIEL_BALD_QUAD_MAP________ � �
- ____ ________ _________ __________ Character ___ MOUNTAINS /REGION z � � CULVERT SURVEY & HYDRAULIC DESIGN REPORT ��,�
RURAL BLUE RIDGE � River Basin HIWASSEE
------- ------ -------- ------- ------- --- -- -------- - � --- -- -------- ------- --------------
SIR 2009-5158 � � ' N. C. DEPARTMENT OF TRANSPORTATION
---------- ---------------------------- ------------------------------------
__________________________ � Stream Classification (Such as Trout, High Quality Water, etc.) C;Aquatic Life,_Secondary Recreation,_Fres ; � DIVISION OF HIGHWAYS
OJ3G
Q�o= 288 (DA) = 305 cis , SAY 310 cfs ; • v H ULICS UNIT
; YDRA
------------------------------------------_----__-__---_----------__-_----_-__ � Data on Existing Structure ---------- SINGLE SPAN 16,_6„ TIMBER FLOOR QN _ TIMBER_ JOISTS_--------- ; � RALEIGH, N. C.
o.�zn______________________________ _ _ _ ; (�
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-- �= 398 (DA)o"a ---421 cfs ,SAY 420 cFs----------------------- ------------- -------------------------------- ; Debris Potential: Low_X__Moderate-----_-High------- �
---- --------- ----- --
Q= 479 (DA) = 506 cfs , SAY 500 cFs ___ ; Data on Structures Up and Down Stream _______ _ � m SF-190226 ject No. ______»BP_14_R.86 Proj. Station _
_sn____ _______ _______ ______ _______ ____ � US NO NCDOT STRUCTURE I.D. No.______ ________ Pro 11+81 L-
o.na �
------- --------- -
----- ------ --
-----------
°' ------- ----- --------
Q= 575 (DA) = 608 ds , SAY 600 cfs ; DS: STRUCTURE 790209 SINGLE SPAN 16'-6" TIMBER FLOOR ON TIMBER JOISTS � � County WEST PR REEK 226
_ �aa-------- --------------------------------------------------------------------------- -------- ------CHEROKEE- - - Stream -------------- �
� --- --------------------- - - I - --
o.ioa - ----------------------------------- -------- --------- ----------- ---- --------C----------. Stru. No..---------
Q�9Q _--79A-(DA)---- _--839 cfs , SAY 850 cfs------------- ' WA-_-_------ Period of Records ------__-_----- WA___-------_- ; �ry On Highway_ SR7350-(GRAPE CREEK RD.)Between _--�RTIN--RD--- and-___�G�PE� RE K3ko)--------
----- -------- ------------- � Gage Station No- ----------- - __yrs. 3
-_--_-_-----------------__-- _---___________ __ ; Max. Discharge_________wA________ c.fs Date__________ wp __________ Fre uenc wq ' w Recommended Structure 79'-0"_X 6'-7"_ALUMINUM BOX CULVERT w�}1EADWALLS
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� � _____________________________________ '___________________________________________________________
- - - � Historical Flood Information: �
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_ ' Period of � n Recommended Width of Roadway___10'_LANE_WIDTH•_3'_SHOULDER__________ gkeW _________ 56�
--- � Date__7996___ Elev. �Z91�_ff.Est. Fre 100 c Source TAMMY KEPHART RESIDEN Knowled e_+35 ' a
; q� -------1' --------------------1-------�--- 9 -----Yrs. ; m -- --------
NOTE: PR0IECT MEETS SUB-REGIONAL GUIDELINES ; Period of � Recommended Location is U At Down Stream from Existin Crossin
------------------- -- ----------------- ----------------------------- ------------ ----- � Date--------- Elev. ft. Est. Freq. -------Yr. Source Knowled e � ( 9 9• ------ -------------------
, P )
I----------------------- g -------Yrs. I
------------------ ---------------------------- ---------------------- ------------ � 1791 71 EXISTING RS 652 � �= Statewide Tier ❑ Regional Tier ❑ Sub-Regional Tier �
----- ------------------- Allowable HW Elev..--------_
' --------_--_-------------------ft. Normal Water Surface Elev. ---- 1787_8'-_ {}. I LL
� FIELD SURVEY j g Bench Mark is ____BM#2 -BL_STA_7+76.00_32'LEFT�8"_SPIKE_SET IN BASE OF TRIPLE MAPLE TREE
- ----------------- -- --- ---------------------- -------------- '
-- ------ -------
; Manning's n: Left O.B. _________ Channel _0.045 _ Ri ht O.B..__Q��__ Obtained From ___ 11-15-13 _ ; ,o; --- ------------------'-
9 � --------�-
EF�ECILYEA_REA_4E_EXL57LL�LG _B@1DGE�4Lfi3_�QE7------------------------------------------------- � ' 00� --------------- N--------------74280----- Elev. _ U88.41' ft Datum: ---NAVD 88
548530 E 4
Flood Stud /Status NOT IN A STUDY ; � - ----- --- ' -------- --
�� Y --------------------------- ----------------- Floodway Esta6lished?--- wA---- v'�
PRQBDSED__ALI,IMltyUG/a--BDX-CUL�EIL�___________________________________ j With Without I g�^., Temporary Crossing STAGED CONSTRUCTION
------ -------------- Flood Study 100 yr. Discharge ___A___ c.fs.; WS Elev.: Ploodwa wA WA
------- -------- --------- ------- -------- -------------------
; y ---_fF. Floodway --------- k• � ^
------ -
EFEECILYE.AREA:_52.]Il_fiQEi-------_-_--- ' ; ��
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------ � DESIGN DATA ; I . , _ , _. , . -�_�
FFEE&ILY� SLZE. 14.49 FT_X_S� Q$ _EL --- --- ---- ---- --- ---- ' � °
' H drolo ical Method ______ SIR 2009-5158 & USGS RURAL REGRESSIO�bFEMA FIS Z � '
EFFECTIVE HEIGHT OF BLOCKAGE; 2.0 FT ____ � Y 9 ----- ---- ----- --- ---- - ___ __ ____ v � � ,� � _ _ . ' - �•
---- ---- - ---- - -- ----
' Hydraulic Design Method . ____ HEC RAS VERSION 4.1.0 SF 190226_WProngGrapeCreek_SR1350.prj � -_ �'�`
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Is a Floodway Revision Required. _ �
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' Outlet Velocity (V ) ________]� �__________f.p.s. Natural Channel Velocit �o __________ 7.5 � � �
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I �equired Outlet Protection ___CLASS_ I RIPRAP______ � Z� VIDYA MOHFIND o-°°c�� R� '
----------------- ------------------------------
------------------------------------------------------------------------------------------------- I N T BE SHOW � �U Designed by ---------------------------------- ���/ ^° �� F 1�y Ta
INFORMATIO O N N PLANS � • As, Ei
------------- --------------- ---------------------------------------------------------- - ; W,
I WS EL. Taken @ River Station 652 ; N�' Assisted by: ---------------------------------------------- Date �__� � I_-----_ F S �_
� Design: Discharge ____ 310___ c.fs. Fre uen 10 ; 3� Z
� 9 �`/ -------- -----Yr. Elev. 1790A G �
---- ---- - --------_fr.
--- ------------------------ � P f = 94 =
---------------------------------------- � rojec Engineer : . , . I■ � �
_ ; DALE N HYATT P E
� Base Flood: Discharge.----60Q_--c.f.s. Frequency_-------100-------yr. Elev. .----7791,75-_-----_-_ft. I E . ------� -- -------- --- T,a„S,��WSP„c,11fe `�`O GINE`�� o'�
----- ----------------- ----------------------------------------- '
---'------------------------------ i ; O Reviewed by: �0'� / ___ �`� sa�oiwes<onaarkwavsui[em �G JJ
' Overto in : Dischar e___ 420+ 25+ y 7790.8 � � � N M(P�
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_____ c.fs. Fre U0f1 � � - �v. vis.wa.aoas p
; EXISTING LEVEL OF SERVICE IS BEING MAINTAINED
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*NOTES:
1 NATIVE I��IATE RIAL B ETWE E N S I LLS�BAF F LES
IN THE CULVERT SHALL PROVIDE A CONTINUOUS
LOW F LOW C HAN N E L. NATIVE I��IATE RIAL
CONSISTS OF I��IATERIAL THAT IS EXCAVATED
FROM THE STRE�J�/1 BED AT THE PROJECT
S ITE D U RI N G C O N STRU CTI O N. NATIVE N�IATE RIAL
IS SUBJECT TO APPROVAL BY THE ENGINEER
AND I��IAY BE SUBJECT TO PER.MIT CONDITIONS.
2 S I LLS�BAF F LES ARE ALUMI N UM
I NTO C U LVE RT.
3 TOP OF LOW FLOW
I��IATC H STRE�►M B E D
F LOW C HAN N E L O F
AN D BO LTE D
SI LLS�'BAFFLES SHOU LD
E LEVATI O N I N LOW
STRE�J�/1. THALWEG
4 DO NOT SET ELEVATION OF H IGH SI LLBAFFLES
ABOVE BAN K F U LL.
5 N UMBER OF SI LL.BAFFLES DETERMI N ED BY TH E
ENGI N EER.
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