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to <br />11 <br />70 <br />v9060'0- <br />5\ <br />• •--- <br />CITY OF LOUISVILLE' <br />STORM DRAINAGE DESIGN AND TECHNICAL CRITERIA FIGURE 1 <br />I Design heod for <br />! 1 foot Min. freeboard <br />.weir flow -1 <br />.. <br />v 100 year water surface - 5349.50 <br />7 /0 year water surface -5343. 14 <br />v• <br />•fi.; <br />Pond invert .4-i:: <br />(trickle channel) --„,44, <br />Wz•C-14.c•-•,.v <br />Headwater for <br />10 year flow <br />Orifice opening <br />5346.50 <br />6.so. <br />;•••• ;*'•••• <br />Headwater for <br />100 year flow <br />Top of beim <br />100 year control at throat Outlet pipe 100 year • ' • <br />of outlet pipe, orifice plate capacity (18"0 Min.) <br />may be required <br />• TYPE 2 OUTLET <br />OUTLET STRUCTURE; <br />3.-0"x 3=0"1.D. Wier. Walls No Scot* <br />No, 4 Rebar- 8"q -C Ea. Way <br />IIWRC, Inc. Reerence <br />Dote: Dec : <br />, 198T <br />1 <br />rp 00 <br />W.* <br />02.••5 2.0 <br />• <br />\-) <br />&term <br />La • <br />(1) <br />r <br />VICINITY MAP <br />Figure 1 <br />vicinity tlep;I:,, <br />• .* <br />LEGEND; <br />-s. <br />C,J <br />SP9T ELEVATIONS <br />DRAINAGE PATTERNS <br />ORIGINAL CONTOURS <br />PROPOSED CONTOURS <br />pwri.ET STRUCTURE & PIPE <br />PONDING LIMITS <br />SCALE: 1 IN. 20' FT. <br />!11121 <br />20 10 <br />20 <br />BENCH MARK: <br />LOWER FLANGE FH E SIDE ARTHUR AVENUE <br />ELEV. 5349.00 (USGS) <br />60 <br />ALLOWABLE: <br />Q10 1024 CFS - 2 I/2" ORIFICE <br />'ORIFICE <br />0.90 CFS 4" <br />oloo 2 <br />• <br />0 <br />w <br />REVISIONS <br />DATE BY <br />STR13 <br />119 CITY OF LOUISVILLE izAwN BYt E9 4 <br />ENGINEERING DEPARTMENT 'APPROVED DATE <br />STANDARD RAMP DRIVE BYTE <br />„.1 <br />our <br />1 <br />I 1, <br />111 <br />1 1/2 R —774 <br />•••••; <br />• „ • •••••••* <br />, • ; • <br />4. <br />SPILL CURB <br />1111,1.11 mo 111111 11 11 I !II 1 1 1 . 1 1111 1 11 11111 1 II III III <br />TRICKLE CHANNEL <br />1 <br />." Mit <br />„ . . • <br />- • '• • <br />2'-0” <br />STD. CURB <br />/ena. <br />DATE REVISION/SUBMISSION DATE REVISION/SUBMISSION. <br />PREPARED BY: <br />KEITH BELL & ASSOC. <br />1728 16TH ST - SUITE 1 <br />BOULDER, COLORADO 80302 <br />PHONE: (303)447-2525 <br />COLO. TECHNOLOGICAL <br />CENTER, LOT2 BLOCK 6 <br />CHERRY STREET AND ARTHUR AVE, <br />LOUISVILLE, COLORADO <br />GRADING & DRAINAGE PLAN <br />DESIGNED <br />DRAWN <br />CHECKED <br />REVIEWED <br />DATEt /6 (417 <br />1,11,00 <br />,„11. <br />110 1 1 .11.1, 111 IL. I <br />PROJECT NO. <br />SCALE <br />DRAWING NO. <br />1 <br />1 <br />ildgLO El8lts111N AB 8301:1038 <br />z <br />0 <br />r- <br />0 <br />0 <br />0 <br />11 <br />• <br />viNtiodnvo '3NIA81 <br />billAffIN BNINWLIO <br />