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HomeMy WebLinkAboutSW8021037_COMPLIANCE_20030114STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE o�GZY�jOl�GY��J%J[l�^ YYWMMDD DETENTION POND ANALYSIS FILE NAME: G:IDATAIWPDATAIWQSIPOND1021037.WK1 PROJECT #: SW8 021037 REVIEWER: L. Lewis PROJECT NAME: Bridge Mill Professional Park DATE: 14-Jan-03 Receiving Stream: Calico Creek Class: SC Drainage Basin: White Oak Index No. WOK03 21-32 Site Area 2.83 acres Drainage Area 1v �77. Q0`: square feet Area = 2.45 acres IMPERVIOUS AREAS Buildings 22000.00 square feet Parking 47447.00 square feet Misc. 1900.00 square feet square feet square feet square feet TOTAL 7134 00 : square feet SURFACE AREA CALCULATION % IMPERVIOUS 66.94% Des. Depth 5.5 TSS: 90 VOLUME CALCULATION Rational C Rational Cc= 0.07 SAIDA Ratio 4.32% Req. SA 4601 sf Prov. SA ..... ;.::. i.502 sf * place a "1" in the box if Rational is used Rational ?* FOREBAY Des. Storm ::;:::1>Of3:;> inches Perm. Pool Volume= 12108 Rv= 0.65 Req. Forebay Volume= 2421.6 Bottom 8.5 msl Provided Volume= 2792.00 Perm. Pool 14 00 msl Percent= 23',°gip Design Pool 15 msl Design SA 6985 sf NEED TO VERIFY Req. Volume 5795 cf SA @ _ lElevation= Pray. Volume 6405: cf ORIFICE CALCULATION Avg. Head = Flow Q2, cfs Flow Q5, cfs No. of Orifices Diameter, inches Drawdown = COMMENTS Surface Area Volume and Orifice are within Design Guideline: in 1.46 sq. in. 0.58 sq. in. 1.23 sq. in. 0.028 cfs x a COMMUNICATION RESULT REPORT ( JAN.14.2003 12:09PM ) TTI FILE MODE OPTION -ADDRESS (GROUP) ---------------------- ---- - RESULT -------------- 825 MEMORY TX --- --------------------- 8-2522474098 ---------OK-- --------------------------------------------- REASONFORERROR E-1) HANG UP OR LINE FAIL E--3 ). NO ANSWER ()'� \N- r �C� G D 'C P. 1 NCDENR WIRO PAGE ------------- P. 2/2 E-2) BUSY E-4) NO FACSIMILE CONNECTION Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, RE., Director Division of Water Quality Wilmington Regional Office FAX COVER SHEET Plate: January 14, 2003 To: Ron Cullipher, P.E. Company: Stroud Engineering FAX #: 252-247-4098 No. of Pages: 2 From: Linda Lewis )AI Water Quality Section - Storlrtitwater FAX # 910-350-2004 Phone # 910-395-3900 DWQ Stormwater Project Number: SW8 021037 Project Name: Bridge Mill Professional Park MESSAGE: Dear Ron: Please revise the entrance road elevations circled on the attached sheet. If there is indeed an inverted crown on the road, the edges must be higher than the middle. Please provide calculations of how you determined that 6,005 cubic feet of volume has been . .. ..-- -- _, __. 4:..,, 1 n ft ,A 1 S T„,,.1114P the anrface area of the pond at Michael F. Easley, Governor William G. Ross, Jr., Secretary North Carolina Department of Environment and Natural Resources FAX COVER SHEET Date: January .14, 2003 To: Ron Cullipher, P.E. Company: Stroud Engineering FAX #: 252-247-4098 Alan W. Klimek, P.E., Director Division of Water Quality Wilmington Regional Office No. of Pages: 2 From: Linda Lewis Water Quality Section - Stormwater FAX # 910-350-2004 Phone # 910-395-3900 DWQ Stormwater Project Number: SW8 021037 Project Name: Bridge Mill Professional Park MESSAGE: Dear Ron: Please revise the entrance road elevations circled on the attached sheet. If there is indeed an inverted crown on the road, the edges must be higher than the middle. Please provide calculations of how you determined that 6,005 cubic feet of volume has been provided in the pond between elevations 14 and 15. include the surface area of the pond at elevation 15. According to the Secretary of State, Mr. Varner is identified only as the registered agent of the LLC, and is not a member. The LLC is member managed, therefore, he must be a member in order to sign the application. Please either provide documentation that he is a member of the LLC, or provide a signed letter of authorization from a legitimate member of the LLC allowing him to sign on their behalf. S:\WQS\STORMWAT\ADDfNFO\2003\021037.JAN03 XXT NCDENR N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 (910) 395-3900 Fax (910) 350-2004 Customer Service 800-623-7748 ' y.. 'IL ". F .a 5. 4F �. •k k±., :C }i 5 ii ., fill ii iE G} :.5' Y. t Lr, Tt, a\Ik.,, _. �—>HA rC'•^I, G'., :J.�....' _ 1 INV 1t.)Tc — :J 1rkV 1- E II p I �7 FE1S.7! 1 ! ♦ 75 • i a :• � s F722 � J fs jJ �' �c.cl�. •�I �Cr ♦ . L"PP @ 0. 37, FE i FEZ,L- 41? ]7 DI t* 2G,58 11' a♦ TS 0.7rU .0' GRA,rE 20. 5 ♦ 0_ � 7 IN,) Out i8.29 �\ 1 TSry20. - v XFE20, 13 r X ♦--� FE20.19 1 X FE21 .14 �tE21.27 fjE�0:64 SW%1_&� ♦♦ FE2140 "'� �♦ iljlt� T5W21.60���� ♦ti FE21 .27 Ts 1' FE 20•22 FEX\ 5'TS'M21. 6 ♦f 22; 00' 2 l / FE21 :431 TSW21'.75 \ fv zZ Z2 ?41 i IE �♦ FF22.5.1 1 x tl•;fir ;� •; ♦ - i 1 i Ilr�ji� ��� • �� 50' TEMPORARY GRAVEL l s' L;}� I�ifl ��� °♦♦\ /i� ti^: ' CONSTRUCTION ENTRANCE pVr_D� ^1 (; err'• .1x. ! 'I:'Y- INV 17.64 w - CC } r ,I - ►.ia N 77, 60 R/W ... . :4t 4l.fiul U RAui L 'PA FL rip. LPNPrjvEv �J riLL RGi 4 £ lJAL G A -- 'iii:AfY. :LIJ1M1�liT ` � /G x, `•E[ •!,l,.•: PLAT F'OF, V11IFIFE .'J�;%�:., i3i%Akt1;1L1f1` .'ash•^/r !�',��/!^i,•.F A MINIMUM OF _ 4.00' npnp TKII CT W/ Jan 14 03 03:31p STROUD ENGINEERING Pn 252 247 4098 01f1412003 03:20 252-726-4004 VAF*CR BRO5 CONST PAGE 01 p.4 OPERATING AGREEMENT OF KING ARTHUR, LLC THIS OPERATING AGREEMENT (the "Agreement") of KINC ARTHUR, LLC (the 'Company"), a limited liability company organized pursuant to the North Carolina limited liability company Act, is executed effective this the 2nd day of February, 2000, by and among the Company and the persons executing this Agreetem as the initial Members (as defined below). ARTICLE I IA 1 UDAMONS. The following terms used in this Agreement slwli have the following meanings (unless othcrwise cxprcWy provided herein): a. "Act" shall mean the North Carolina Limitod Liability Company Act, as the same may be amended from time to time; b. "Adjusted Capital Account" shall mean, with respect to a Member, the balance in such Member's Capital Account at the end of the relevant fiscal year, as determined l0 accotdance with Treasury Regulation Section 1304-1(b)(2)(iv); c. "Articles of Organization" shall mean the articles of organi"tion of the Company Bled with the Secretary of State, as amended or restated from time to time; d. "Capital Account" shall mean for each Member, the account established pursuant to Section 8.2 hereof and maintained in accordance with the provisions of this Agreetttcet; e. "Capital Contributions" shall mean any contribution to the capital of the Company in cash, property or services by a Member whenever made; E "Code" shall mean the Internal Revenue Code of 1986, as amended from time to time (and any corresponding provisions of succeeding Iaw); g. "Distributable Cash" shall mean„ with respect to the Company for a period of time, all fum b of the Company on hand or in bank accounts of the Company as, in the discretion of the Managers, is available for distribution to the Mcmbara after provision has been made for (i) payment of all operating expcnses of the Company as of such time, (ii) provision for payment of all outstanding and unpaid current obligations of the Company as of such time, and (iii) provision for such Reserves as the Managers citem necessary or appropriate for Company operations. h. 'Fiscal Yeah' shall mean the calendar year, provided that; the fast Fiscal Year of the Company shall commence when the Company commences business and continue through December 2000; RECEIVED JAN 14 2003 DWQ PROJ # SU 0t; I a 3 bd SiPE2 9SL aSa 2uivaaul2u3 pnoujS dirtr-Ea 60 bi Uec Jan 14 03 03;31p STROUD ENGINEERING Pp 252 247 4098 01/14/2083 03:20 252-726-4BO4 VAgWR WDS CONST PAGE 02 P.5 17 and the Company. any legal or equitable right, remedy, or claim undo or in respect of this Agreanezu or any covenant, coadition or provisions herein contained, and such provisions arc and shall be held to be for the sole alad exclusive belt& of the Members and the Company. ` 10.14 C01Aj=ARTS. This Agreement maybe executed in multiple counterparts, cash of which sha13 be dermod tin original for all purposes and all of which whcu taken together shall constimte a single counterpart instrument. Executed si&nsturt pages to any caunterpart instrum w may be dmrhed and affixed to a single counterpart, which single counterpw with multiple executed signature pages affixed thereto constitutes the original counterpart instrument All of these cvuntetpatt pages shall be read as though one and they shall have the same force and effect as if all of the pasties had executed a single signature page. IN WITNESS WHEREOF. the uadersigped. being the initial Members of the Company, have all caused this Agreement to be duly adopted by the Company as of the 2nd day of February. 3000 and do hereby assume and agree to be bound by and to perform all of the terms and provisions set forth in this Agreement, which Agreement is executed in (4) duplicate originals, with cash mcsnbtr retaining an original. J05 H F. Z Mom —IzjttA- zL RdUtRT B. PEARCE.1u Member AVTp P. ROBERTSON Member V & G PROPERTIES (a North Carolina Geneaal wtucrWp), Member Y B : !/ D l,_ Varner (General Partnt t of V & G Properties) S•d S1:EZ SSL ZS2 2u r uaau 12u3 pno,a j5 d9� : EO 60 ir 1 ue(' — Jan 14 03 03:3 p STROUD ENGINEERING P9 . . !. . . NR Wll�p; - v -jVjj. 14. MB--I?: a" 7: cat 76 fA .,O%x ra.GLF fEl r'RAM 10 s 252 247 4098 .. . s0-e25,-Ww F!-35: 14 VV P. INY OU 1--jor, XFE20- 19 ♦ x FE21 14 TIA0. ra 4 JI X1101,11 �EV -40 1 1. TSM21.60 I. TS .7 1 < 2 IFE-2 FE �l o rs I'}} SW21 TS 0F ;t FFZZ.64. 22 do' ga TT4PQRA VVjlVrLL CMATAVCT [ON P"P"Cl ni mv 17-64 J A. ccc 60, P/W I&E RLlf. a mirelaw" OF Nlit Po ar.1 5LM1 wo do lop �'` :v P r" 'jr L, &PL-1 ".,I IK none INI CT RECEIVED JAN 14 2003 , DW( PROJ # SWCTO 205 . ............................ St'Ca 99L 290 2ujjBauj2u3 pnoilS dipir:60 60 bl Uec STROUD ENGINEERING, P.A. Hestron Plaza Two ` 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 STORMWATER DETENTION PUNU Ut:WUN DRAINAGEIAREA-__ _ _ 106,577 SF a 1 INCI DRAINAGEi�70[SC WATERS = IMPERI10U5-AREA I — $UILDINGS= ___..__...__.-.._22,000 F 2.__ __ �_ _....__..,._F PARKINGIDR�IVES = I 47,4147 SF -M,ISCELUA! N�OUS = -! I -- l-,900-SF- i k � .....TOTAL I l ......... 7-1,347...5_F.... % IMPERVIOUS 67. 00% �o � TSS REMtVA U USE A 5.5 DEEP POND WITH 90 /° n .I SVDb r4.32% ... . -, ... _....... MIN. REO'D SA 9 PERMANENT POOL 4604 5F SAIPROVIDED--- .................._..�.__._..._...__......,..._......._......5025..$F..- N. REQ'D VOLUME Rv- M' �="0:5 + 0:009(%IMP)= -- MI-j J- —0 65- VOLUME.REQ`D - I. 5773 CF `--t I I I I 6005 CF VhE 11MF RRi7VIDFD = i JOB 1/l J D ' i- + v ul Gt-I !\ SHEET NO. I OF j MM CALCULATED DATE ! VG CHECKED SCALE +� `' ..... . jo `� •F / :QQ T-i J. 4—SEAT— I 1.34s 13GIN 7 °/12°lfRvl(DR STROUD ENGINEERING, P.A. Hestron Plaza Two 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 JOB t Er lu.' ilk t U L .u" SHEET NO. OF CALCULATED 8Y DATE A 6 Z r CHECKED BY DATE, SCALE S I ' • •,i ��' per WQ 1 •.ply ••..1..••'Q�w,�' 11 Iyg1...SA;.._ i __114.Q0__ __Permanent ool 1 5025 { I I 1 I I I ._._......1-.._...__ .-..-_._f..... ..� _..k..._....._.I_- 113.00 1 Shelf 1 1 3292� 1 1767 1 4.$0 1 7949 1 4$:50— _--#--Bottom---#-�--- -I�_24Y_I_- -_j..--._._._L_...__._..L. __...I_.. .... .... L............. __1-.........1...._.1... R FOR _ O'LUME Tbtal4Vol-.� _ _121 W_ E levationy ion # SAj SF __ AV.:t SA1 I t... FT - Vol.l(CF.) 114.00 Permanent poOl 1 1420 1 1 1 11 1 ; 1 1- I --I_----.I-_. -.._ I._- __I .. --I- - I 1 - .r._._.-I _ _.1_....931 ..._ 1j 13.00 I 1 27,92 L .of-Perman IN VOLUM .00 1 Sheifl-_-__1._.__.1__2120._i_l�_�—I—I---I---- 1 I i 1 1 1 11124 1 14.50 1 1 5058 I I I I I I I I I i TAtn{ VM 1 __ 1 721K evation I I Section I $A (SF ' Avg .1,SA Ht. FT I Vol. CF 14.00-- ! Permanent- l--1_.50254 -- -}- ----..h.-_.-..._I_.........I-...._._.#...........1-..........1 I 1 I I I I ! 16005 1.00 1.....-1..60.5,..-. 15.00 Storage pool # 1 6984 1 i 1 1 1 1 ! 1 1 STROUD ENGINEERING, P.A. Hestron Plaza Two 151 A Hwy. 24 MOREHEAD CITY, NC 28557 (252) 247-7479 ,oB !`M5,�5-13 RvijA-e N111 blk-SSIWAJ N4-tk SHEET NO. OF CALCULATED DATE -11 016)2- CHECKED B 3 0- Vx SCALE t>- H CA f #0, .. ... . . ... ... .. ... .. .. .. ... .. .. .. . ....... ... ......... . ...... ... . . ..... ... ....... ..... .. ... 0 IFICE-�ZIN� G-- A[ 0%1 rt 1. 7 .......... orific dial I 1.25 in. area -0 0085 10 & it sf ... .. .. .. .. .. ........... --4- I time increme - 11 -- * i 1120 minutes II storage vol U"-M,-, e= 5773 5- 14 ftA31"' r'. 1 i_-}_. ......... _�rrn pool el. p ... . .............. .. .. .. . ... ......... . Time --C uf�ulative Cumulative-V olume- eight- olume-volumd- ------ Incrementl (minutes) Time (minutes) �Time liho rs.j Initial (ft�3) (feet) ut 9! C fs) Out Re rn�ainlng 1 120 0 120 0 2' 5773 .0 0 73- 1.00 -1 . ob---b 10. 04iO 0410- 0.00 295:29 543.0cl -5477.71--- 1240 16'.0400 . 120 120 .360 4 5477.7�1 --0- 51M06 0.95 287'64 51 90.06 -4910-06 .96 b. 0389-"279'99-- '6.0318 I . €, __ 120 120 -1 120 !480 20 40 8 12 14 4�19�.68 4637.16 .73,07 4� 4116.07 0.86 -0..80 ..... ..... P.0368- 0.76 0.0357 ' 0.71 0.0346 272 33 -264 .67--4373:07 257b1 24 . 47 gs 4637'7g 41'116.07 3866.72 120 .. .......... 1080 18 3025.P5 0.67 00336 0 - OM 1 '0325 241.67 �34- - '00 MkO§ --d3 12d 1200 1320 I 20 22 + 309.1 QQ- 3164 J,4 -0,59 01.0314 0.5$ 0 04 ' 2M32 il 6F64 3164.74 _ - 2946.10,�+ 12d-- 120 -----1440 1560 24 26 2�46. fo ........ 2735,15 I ..0.51 0,0293- 0.47 0.0282 -21.0195- 203:26 - 2735 9 2531.90 20-- ----1680 L 28 201,910- -0." 0-02�2- _�0.0 -195.156- I -23b6.3 I {-� 20 1800 30 2P36.3 4 0.40 26 187185 21,48.41 . . ........ 20-- 126 20-- 126 920 �040 --2160ii- 1 2280i .32 34 36 38 -21148,4& 968.34 95;6 1 - 1631.21 .0.3T------0.02�0 0.34 0.0239 -0.3 i- O: 0229 - 0.28 0.0218 180.14 172!43 -164! 70- 156!97 -1968-34-1-- 1795.91 -1631.21 1 474.2t t--,- . .. .. .. .... -126 ------2400!----- II 40 ---1 74:25 . ..... 4' 0.26 207-- 00 -.14 !22 9 -625;0--- ... .... . ... 120 42 1 25.62 0.23 0.0196 141Z 11183.55 126 25201; 0:21---- 0.01$6-- -133t7O -1649 8 . . ... ... .. 120 12 0 126 27601r 2880" 3000i ............. .. 46 !--48 ........... i 50i ........... 1049.85 ... 923.92" $0579 i ---695.-47 0.18 0.0175 I -0.16 0.0 164-L'-118, 0.14 0.0153 -1 1251;93 13 110132 . .. -10214 923.92 865.-7d 605,47! .... ----- "592 J ......... .. 120 26 1 3240J 54 1 592.97 ):12 0:01'42-- 0 .16 l0.0131 9L 1 94.54 97 - ------ 498.3� ----- ------ - ---- - 120 33601 -'--498: 09'r 0" . "0120-"' '-86-76--- -411-.5d--- 120 T" L ....... .. .. . 120 .... �460i 3600� 58' 411.5,8 0.0� 0. 0 1',10 1 78.85 : 332.73, .... .... .. .. �720' �61.B4 0.05 0.00 87 .. . .... ...... .. ..... . ....... ..... 62. 89 18• a.99 120 840, 960� 64 6 .95 0.03 0.0076 10,92 0.0065 54. 1 82 4666 144.1-- 97.47 ... ..... ._.120 -....3 " -,I, '4080 " --- -- 142001- 6 7 .47 0- - Qi 0,0041 I-29."88 A0 29.22 i 120 !4320'-, 72 29.22 0,011 0.0�29 I I 21.01 8.21 120, 3:08- DAYS T'' "i 1:'14-'-j . ...... 'a92 .... .. .. ... .. .. .... ... .. .......... ... . . ... ......... .. . .. ... .. ... .. ... ......... . .. .. ...... . --- ......... ......... ......... .. T_. A. EJ Narrative Erosion and Sedimentation Control Plan Stormwater Management Plan Bridge Mill Professional Center October 1, 2002 Owner: King Arthur, LLC c/o Danny Varner P.O. Box 1652 Morehead City, NC 28557 (252) 726-5689 Engineer: Stroud Engineering, P.A. 151-A I-lwy 24 Morehead City, NC 28557 (252)247-7479 Description of Project RECEIVED OCT 3 0 2002 DW 1'ROJ # �SGU ed'y 103 �- 1. Type of Development Bridge Mill Professional Center is a commercial development project located in Morehead City, Carteret County, North Carolina on a 2.83 acre tract off of Bridges Street. The professional center consists of seven buildings and the necessary parking required by the Town of Morehead City. This project is proposed as high density utilizing a wet detention basin as means of controlling and treating stormwater runoff. 2. Earth Disturbing Activities a. Excavation and grading for the installation of the drive, parking, drainage, and utility improvements. b. Grading for the construction of buildings. 3. Drainage The site presently drains north to into Calico Creek, classified as SC waters, which requires the design for a one -inch rainfall. Erosion and Sedimentation Control Measures The following measures are proposed for the site. If it becomes evident that additional erosion and sedimentation control measures are needed, they shall be installed immediately. It is intended that all grading and excavation activities within a certain area will be protected as soon as that activity is complete. 1. Sediment hence - Sediment fence will be utilized as necessary in locations as shown on plans or as deemed necessary by the engineer to insure that off -site sedimentation in controlled. 2. Sediment Basins- Stormwater detention pond proposed for the site will serve as a sediment basin during the construction phase of development. Once construction is completed basin shall be cleaned to the original design depth. 3. Riprap outlet protection- Riprap to be installed at locations shown on plans to reduce energy at high velocity areas. 4. Seeding - All disturbed areas will be seeded within 14 days following construction in accordance with the seeding schedule shown on plans. 5. Stone Construction Entrance - Stone construction entrance(s) will be used to reduce transport of sediment off site. 6. Drop Inlet Protection - Inlet protection will be used to reduce the amount of sediment entering the storm drainage piping system during construction. C. 0 E. F. Time Sequence of Operations 1. 2. 3. 4. 5. b, 7. 8. 9. l0 11 12 13 14 15 Remove and/or relocate existing obstructions. Install stone construction entrance(s). Install silt fencing at specified locations. Clear and grub tract area for construction. Excavate, rough grade, and seed stormwater detention basin, Rough grade drive and parking area and begin preparation of building site. Seed and mulch all areas of disturbance not to be paved within 14 days of land disturbance. Install drop inlets and drainage piping within parking and drive area with sedimentation control measures as shown on detail. Install utility services. Fine grade drive and parking area and place stone base course. Construct building(s). Pave drive and parking area. Perform final grading, seed and mulch all remaining disturbed areas. Remove accumulated sediment from stormwater detention basin and perform final grading of basin, Install wet detention basin vegetation as specified. Design Assumptions 1. Design storm is ten years, 2. The rational method was used for design. Wet Detention Basin Operation and Maintenance 1. After every significant runoff producing rainfall event and at least monthly: a. In, the wet detention basin system for sediment accumulation, erosion, trash accumulation, grass cover, and general condition. b. Check and clear the orifice and overflow device of any obstructions. 2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative cover to maintain a maximum height of six inches, and remove trash as needed. 3. Inspect and repair the collection system (piping, flumes, swales, rip rap) quarterly to maintain proper functioning. 4. Remove accumulated sediment from the wet detention basin systems semi-annually or when depth is reduced to 75% of the original design depth. Main Basin Forebav Pond original design depth: 5.50' 3.00, sediment removal benchmark depth: 4.12, 2.25' Removed sediment shall be disposed of in an appropriate manner in no way adversely impacting water quality. Remove cattails and other indigenous plants when they cover 50% of the basin surface. Coastal Stormwater Regulations The North Carolina Division of Environmental Management implemented coastal stormwater regulations in coastal counties on January 1, 1988. these regulations arc detailed in 15 NCAC 2H.1000 Stormwater Runoff Disposal. These rules allow for a development to he considered under various options. This project is submitted for approval consideration under Section .1003(d)(2). 001,1)119110 'OF �Ssi••• ald D. Culiipher, P.E. Date 713 F :o•� •: �. 9� '���NtrEP • Q STROUD ENGINEERING, P.A. JOB I .:�' rW YAAL �AA l 1, Hestron Plaza Two SHEET NO. _ _— OF 151 A Hwy. 24 •••°° pFtTH C�b �u+Teo g DATE 3 MOREHEAD CITY, NC 28557 4a•• ?.••• ..... .� 6'pgY DATE- � (252) 247-7479 �, QQ,O 80 ON ;r oIl' ' `�a7g 9r � i = � � ! ti SSV m i-7 `7 Gf 5 l i l/.: � V2, Q/ jam, ..,_r`S.fl-l-.__,........ _4 _...-.-._ `T....._._ .... ..... I I r..�. I it I I L.- ......... ., . x I J 1 -c '} : ,I ��C'. 7a�1 1- _.__ ...._. _.__ .. ^... ! — I 0 _, _ 1�.�. _.- �_ ._-.-._._. �.__.,. _.._ __4__i --- _._. ,_ _ ._._. A --------I�a- ...E _. —y �.. .... _L). - � f f ;_ i r 1 i CL .... ... .. ....... .. .. ... .. it K I _ _._ 6a 4 I8-73 `DRAINAGE &SEWERAGE- HYDRAULlG COMPUTATIONS-5 a = CPO55 - SecfOno I _ — area of walerwa y -- p= wetted perimeter R P = Hydraulic radiu SECTION OF ANY OPEN CHANNEL .. SECTION V =Average or meon velociiy in /eef per .second. Q = a V - Discharge of pipe or chonn e l in cubic feet per second (C. f. 5.). n = Coefficient of rouyhr7ess of pipe or channel Sul -Face , see Tab/e A-P9.18-68. S = 51cpa of Hydraulic Gradient (wafer sui•foce in open channels or yip es not' under Pressure, some as Z10Pe of chonr'e/ or pipe invert only when flow %S 4117i fO rrr7 in C0n3 fa n t SCC 'iOO . For pipes iu11 or holf-full Rtv 4 OF CIRCULAR PIPE FIG. A- HYDRAULIC ELEMENTS OF CHANNEL SECT IONS. 90 •m+ 70 w 60 4 U 3 so 0 J LL 4o LL 0 = 30 F_ a- 20 w 0 0 zr7 G n rn 7n xn .tn �cn r_n -�n An Gr] fnn lfCf � !9n HYDRAULIC ELEMENTS fo4 PER CENT OF VALUE FOR FULL SECTION (APPROXIMATE) r'"AMPLE: Given : Dischargge =12 c. f s. through, a pipe which has capacity flowing full + /S c. f. S. of a velocity of 7.0 f7`. p2 r scc. 1/i7ol V far Q = /2 c.f. 5. . Percenfoge of fv// a�ischa,- - = 6070 . Enter chart cif 60/ 'of Yo'/ue fnr fu//sec�ior7 of Hydrae/fc E/err7ei�fs,i�d Y=//2.5%x7=7.9 f'7< per sec. FIG.B-VALUES OF HYDRAULIC ELEMENTS OF CIRCULAR SECTION r r' n t "A PI I /\ r l e, R r m T% 1 ,- n T- r-- !' r %. appendices NEW YORK DOT DISSIPATOR METHOD FOR USE IN DEFINED CHANNELS (Source: "Bank and channel lining procedures", New York Department of Trnnsportadon, Division of Design and Construction, 1971.) Note: To use the following chart you must know: (1) Q full capacity (2) Qto (3) V full 40 �1 (4) Vlo ! where Q = discharge in el's and V = Velocity in FPS. ESTIMATION OF STONE SIZE AND DIMENSIONS FOR CULVERT APRONS Step 1) Compute now velocity Vo at culvert or paved channel outlet.. Step 2) For pipe culverts Do is diameter. For pipe arch, arch and box culverts, and pAcd channel outlets, Do=Ao, where A.= cross -sectional area of flow at outlet. For multiple culverts, use Do=1.25xDo of single culvert. Step 3) For apron grades of 10%. or.steeper, use recommendations For next higher zone. (Zones 1 through 6).' 25 20 - 5- Moe Kum - — -- — REMAIN r a�lrov �Q 10101120010 ■ �rr�� ■ �� �rsme�InRr KNEWE O �■rr 00's1lgl�l,Ikf®Ql p �fi�l1�'��rI1Am7�lA IlOmtll �imwainosasmz i�i INCIALIMEWRIUM �it•m, r� ro�mmds�rm>Qm� wrmaeam �ptul>r�armoa[w'e► Site rYr►r�ara+�nuor,a>Q. ranaruar i ® muut:rv�rara�■r■�. ��r .r -tarrr�v' ®�r� �nnn rrarraaau��nsr■■roruu.. b'v rl►7■iltfrtdt�m',fl� Y11wIrslQr� ■mrmmur�. Iry arnirrrooar■� �mnan—Rua �r#1il�A��AiV ®M■RRQ�r �� �rnn�rargrm��an�or rumor. mti=om�timsrr��asnrrmma�r. Na m m�:v>tmmu«�.�o�swurm �o4rry arm, rr■mawimas■riorr��rr �roral 0 E r *�',..a l I I I 0' 5' 10, 15' 20, 25' DIAMETER (FI.) Figure 8.06.b.I RCV, IVB 8.06.5 0 i APWN. MATER �1 O PROTECT CULVERT L1 TO AREYEMf SCOUR HOLE USE L2 ALWAYS L2 1 STONE FILLING (FINE),:, :6L. A'- :• 3 x De 4 x Do 2 STONE FILLING (LIGHT) CL. 8 3 x Do 6 x Do 1 STONE'FILLING (MEbIUM)`CL. 1 4 x Do 8 x Do 4 STONE FILLING (HEAVY)" CL. V- 4 x De 8 x Do 5 STONE FILLING (HEAVY) ' CL. 2 5P x Do 10 x Do 6 STONE FILLING (HEAVY)' CL. 2 6 x Do 10 x Do 7 SPECIAL STUDY REQUIRED (ENERGY DtSSIPATORS, STILLING BASIN OR LARGER SIZE STONE). Fig. 8.06.b.2 Width = 3 times pipe die. (min.) DETERMINATION OF STONE SIXES FOR DUMPED STONE CHANNEL LININGS. AND REVETMENTS`• Step 1) Use figure 8.06.blto determine maximum stone size (e.g. for 12 Fps=20" or 550 lbs. Step 2) Use.figure 8.06.b.4 to determine acceptable size range for stone (for 12 FPS it is 125-500 lbs. for 75% of stone, and the maximum and minimum range in weight should be 25-500 lbs.) Note., In determining channel velocities for stone linings and revetment, use the following coefficients of roughness: Diameter Mannin's Min. thickness (inches) "n" of lining_ (inches) Fine 30.03I 9 12 Light. 6 0.035 12 18 Medium 13 0.040 18 24 Heavy �.13 0,044 30 36 (Channels) (Dissapatm) 8.06.6 Rev. 17193