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HomeMy WebLinkAboutWPO201600082 Plan - VSMP 2018-06-07 ;107 ?� _____/ \ u MANHOLE ,�� '---.l / �' TOP=39 \ heT IN=371.74 APPROVED -\\ -\ / \ -INVE - T (8" D/P)=371.69 by the Albemarle County �� ' / Community Development Departmern 3 T / N N Date (/ 7 ! $' el $, pAP ,� _ \ � N File wP0 006$a AY). v \\\ - SEE APPROVED VSMP PLAN #1, SHEET 2's 'RIPRAP N \�� OUTLET SECTION AT MOORES CREEK' DETAIL FOR M . \\\ DESIGN OF RIPRAP BETWEEN THE STREAM'S BED i co -- / /'� EDGE OF \ \TO A POINT 3' ABOVE THE STREAM's EDGE. a N / mac. STREAM=365.Of. \\ \�N o o �- / --- A0.:0 MODIFIED CH' NEL -3' , . ---- \\ ,�. . ice. �!ti:�� - __ PUB SWM ."EST ANDi.9P.EN. . . . . - - •�:c���ti' \� E / PACE ' MENT (0.116 ac� Y.� „4" �� NN‘,...ir DB 9. 4, PG.. 732. (PLAT). / .Alri% ►% �,• ` \ \\� - 1 4909, PG 508-517 ` / 3. �Zj.�. �" �� .. (MAINTENANCE EASEMENT) • / �jf_•�•o� I \ / ` �„� \ _-- MODIFIED DITCH's RIPRAP TO BE j / tIt I / ' / / -' \ .�� \ UPGRADED TO CL. III RIPRAP. ! .� .vt' �''� I' �\� _ a. . BEGINNING OF MODIFIED / /� �4 ' ! \�\. re CHANNEL (INV. 374.00)= e�/ N. \\� . OUTLET OF APPROVED PIPE ., - \ \ M (INV. 374.00) � .,4� / \• D�_ 18 _ M �`��;��� 0" •PPROVED RIRPAP HA NEL. N� � : \ - • i �' �,15 (PER VSMP #1 PLAN, SHEET 7) \• t • •e• 1. RIPRAP SHALL BE STABLE ON BOTH 3\ SIDES OF THE CHANNEL & BOTTOM. •• ED APPRO Tit0 RIPRAP . ■ �► RIPRAP SHALL BE GRADED. sal ' EY ),. •SCALE / e MODIFIED VALUES :1/ ` Q2=21.50 CFS o uRIPRAP-LINED OUTFALL NOTES: V2 =6.73 FPS "-------6--------------------- .44.11t 4 all,":.:.:. . / :1. CONTRACTOR SHALL NOT INSTALL THE 17' LONG LEVEL OUTLET PROTECTION AT THE PIPE's OUTFALL. CONTRACTOR SHALL INSTEAD BEGIN QIo=39.84 CFS I THE MODIFIED RIPRAP LINED CHANNEL AT THE OUTLET OF THE PIPE AND EXTEND IT TO AN ELEVATION 3' ABOVE THE STREAM's EDGE. Di°=1.30 FT 2. MODIFIED RIPRAP LINED CHANNEL (V-SHAPED DITCH, 18" DEEP WITH 3:1 SIDE SLOPES) SHALL HAVE A NEW LENGTH OF 45' AND A NEW (SLOPE=13.3%) a SLOPE OF 13.3%. v 3. RIPRAP LINED CHANNEL TO BE CUT IN WITH 3:1 SLOPES ABOVE THE CHANNEL's TOPS OF BANKS, AS SHOWN. o 4. RIPRAP LINED CHANNEL TO BE UPGRADED TO CL. III RIPRAP. IN ACCORDANCE WITH THE APPROVED VSMP PLAN #1, RIPRAP SHALL BE PLACED IN A TOE TRENCH WITH AN EXTRA DEPTH AT THE TOE OF THE BANK. SMALLER STONES SHALL FILL THE VOIDS TO FURTHER REDUCE THE RISK OF MOVEMENT. RIPRAP PLACEMENT SHALL EXTEND INTO THE STREAM. PLACEMENT OF STONE WITHIN THE STREAM SHALL • • BE LIMITED TO THE EDGE OF THE STREAM, AND ONLY EXTEND INTO THE CHANNEL BOTTOM APPROXIMATELY 3'. • • M 0 - w' 5TH STREET COMMERCIAL DEVELOPMENT SCALE M Call C O L L I N S ENGINEERING RIPRAP LINED OUTFALL ANALYSIS 1"=20 0 200 GARRETT STREET, SUITE K - CHARLOTTESVILLE, VA 22902 - 434.293.3719 EXHIBIT 1 SHEET l of 1 8; a r',se T,ions and associated documents ore the exclusive property of COLLINS ENGINEERING and may not be reproduced in whole or in part and shall not be used for any ,uroose whatsoever.inclusive.but not limited to construction.bidding.and/or construction etaklna without the express written consent of COLLINS ENGINEERING. Ac;00,A ce, w, UE..SCF{ SPEC. 3.11, QRt -tvi ° 'D• ' 3TikkET Cowl aAri A u. A►i f\ . Fog � .1P�EEC NT t� O Mr x. 10 f. cR MAPJNV S E GNIA1.yap! = N.3© CHANNEL SLAQt per, uts Thtt Aso S-Lze c SSE = a.000 T CL.TE NPcs r' S1/4440g1oa dam, s I E Von gY +\AS 'o- t;09(, 105. 0 CHANNEL SttE 9-.0Ks Ai2E 3,� 'fI-kERCrtiL : '9EsY� RRoe_c‘0 E x.s Corvvet.E`r ToA CLAfAJ) V 1' 3/ QS/Rz - 3" = o,\a ® `PER PLANT 3,11-I / K = t,0 0 TANceo-r Fumj czQBP\c) ovsuki (EL wl f, a.a) MC- s Ttt E4iv r1H.' `,S F- E CUJED FLQ 4, A Fv,AL C.L. RsQpn4 �µpov utovr onrtF . C}AANNv` MC-'t5 vEsc+'t 3,19 sQ tCaf.1CArxDNS Modified Channel with New Slope- 2 Year Complex Channnel- Modified Channel Outfall- 2 Yr. Design Storm Input: Slope 0.133 Flow (given) 21.500 line x y n 0 0.000 1.500 0.050 (first n value not used) 1 4.500 0.000 0.050 2 9.000 1.500 0.050 Output: Depth 1.032 (y) ( 1.032) Channel bed segment output: line Q V A P 1 10.75 6.73 1.60 3.26 2 10.75 6.73 1.60 3.26 Mon Jun 04 15:17:28 EDT 2018 Page 1