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HomeMy WebLinkAboutDrainage Reports - 11/16/2016 (2)grown ors Bowes bra1n0_5e RePo 1. keviSiO►1S ■� NORTHERN ENGINEERING StormTech Chamber Data Chamber Dimensions MC-4500 Width (in) 100.0 Length (in) 48.3 Height (in) 60.0 Floor Area (sf) 33.5 Chamber Volume (cf) 106.5 Chamber/Aggregate Volume (cf) 166.3 Chamber Flow Rate Conversion (gpm/sf to cfs) Flow Rate* 0.35 gpm/sf 1 cf = 7.48052 gal 1 gallon = 0.133681 cf 1 GPM = 0.002228 cfs *Flow rate based on 1/2 of Nov 07 Om in Figure 17 of UNH Testing Report Chamber Flow Rate MC-4500 Flow Rate/chamber (cfs) 0.026156 City of Ft:Colli s� pp�r v��ed Plans Approved By a . . Date .. I D:\Projects\1033-001\Drainage\LID\Chambers\1033-001 Chamber Summary w OA — N m n Q D 1-� W N D � N � A A a y c � - � a O 0 3 ^ o s d 01 d 3 n cr m n n O _ o s :3 3 v ao O1 e► O 3 7 v Ln C �°o n 3 o d 3 y m N ^r 3 c 3. w 3 0 3 �a 3 0 _m N N g` 3 3 c 4 a `r)M _o 3 0- o. m 0 d n _ N — d m 3 a ■� NORTHERN ENGINEERING Chamber Volume Calculation FAA Method Project: E�; ,,:`. rec Cr Project Location: F. ^ Cclllrs, Co;^ratio Calculations By: �,. B: x Date: September 12, 2016 Basin No.: A 1 s.2 Input Variables Results Design Point =1 Design Storm s✓ -i Developed "C" = 0 87 Area (A)= -1 4,8 acres Max Release Rate = 0-03 cfs Required Storage Volume Quantity Storage 51D ft3 Time Time Ft.Collins WQ Intensity Q2 Inflow (Runoff) Volume Outflow (Release) Volume Storage Detention Volume (mins) (secs) (in/hr) (cfs) (ft) (ft) (ft') 5 300 1.43 0.6 168 8 160 10 600 1.11 0.4 260 16 244 15 900 0.94 0.4 330 24 307 20 1200 0.81 0.3 379 31 348 25 1500 0.72 0.3 421 39 381 30 1800 0.65 0.3 459 47 412 35 1 2100 0.59 0.2 482 55 427 40 2400 0.54 0.2 504 63 441 45 2700 0.50 0.2 524 71 454 50 3000 0.46 0.2 541 78 463 55 3300 0.44 0.2 563 86 477 60 3600 0.41 0.2 579 94 485 65 3900 0.39 0.2 589 102 487 70 4200 0.37 0.1 601 110 491 75 4500 0.35 0.1 609 118 491 80 4800 0.33 0.1 621 126 496 85 5100 0.32 0.1 630 133 497 90 5400 0.31 0.1 646 141 505 95 5700 0.29 0.1 648 149 499 100 6000 0.28 0.1 659 157 502 105 6300 0.27 0.1 667 165 502 110 6600 0.26 0.1 673 173 500 115 6900 0.26 0.1 690 180 510 120 7200 0.25 0.1 1 692 188 504 1. Release rate governed by flow through geotexile. See StormTech Data and Chamber Summary for additional information. D:IProjects11033-0011Drainage [LID [Chambers 11033-001 FAA_Chamberl NORTHERN ENGINEERING Project Title Project Number Client Basin(s) Browns on Howes 1033-001 Maxiiimo al-a2 Date: September 12, 2016 Calcs By: A. Boese WQCV= 0.91<'3 —L19i2 +0.7& Drain Time 12 hl a = 0.8 WQCV = Watershed inches of Runoff (inches) i = 86.9% a = Runoff Volume Reduction (constant) i = Total imperviousness Ratio (i = Iwq/100) I WQCV 10.301 in Water uality Capture Volume 0.5 0.45 WQCV=a 0.91f3 1.1912+0-7&) r 0.4 m 0.3 0.301 L / 0.2s _ aM 0.2 ,. _ems' 0.1s 3 0.1 bM 0.05 0 O O O O O O O O O O t+ O N W A 01 V 00 O O 0 0 a O O O O O O O Total Imperviousness Ratio (i = Iwo/100) Figure EDB-2 - Water Quality Capture Volume (WQCV), 80th Percentile Runoff Event V r WQCV 1 * A 0.45 ac Il 12 11 0.0113 ac-ft 493 cu. ft. V = Water Quality Design Volume (ac-ft) WQCV = Water Quality Capture Volume (inches) A = Watershed Area (acres) / { _ g » Q| 9:£7 /\� [ k\�k\\ ~� m 12�,.:.:. 2 m � w r / §(: \\\ �i� -- � ¢.. � \�■ } •: / OD .0 � n _0 / o (77 »k ;_&� E \ �JA 00 _�■ r( /W) f00 =(A 11DIOIC'I'D &� a B �» [ NO \ kk � _cLIE n 2■(,|®f o #;a9�9 rm - - Q 00 J00 rQ m»&!■ 0 ;R k� 2 �M .=7@ E (\m 63 3 ® !_ }(k \ ( . a� a) 2)) \\ mz ;o ;q /z d (C <D 0 i CW O m m m 60 ac N N n a r ^ II a7 II c G + N O U4 r II O fl A r �5 4 ^ . r n � m T N �ya n 3 N ti 2.` i e B n y `e t s 6 y q � n Ny O oou T + < n T n 3' 7 1� Z N of N v 3e E y n r m J i ? e a u G e vz 3, y v D v ^ m � N A m � N ^ O N o o 3 ^ as N F 3 . e o 11 ? 0 a m z m Q w m � m ;UM z= o Z / 0 , - ! 2 _ ± w } } \ ~© \ f \ � \ `°$�/ ( ! .9 ;. %§ � / - # ..ire � _ » j7#�f /o { (. � � �I ;z =o -� z.q mm _;u mz / \ \ CD \ ( § ,!■&;i;;7� ca (:{:'::: {: `:::::# § - � o LO . � o - ��E n . o &I rf I w (. p 0 2 / 0 Cz !!SL §§»§ / Z/� -�� a . B / . CZ _ § E _ 3E _ ` 3 Fi is- } k { - - � a Cl) =f ct b , �&E■ `�- � #f! ( ! 3 23° .R(f� ° § & `. 00 N [C N 0 n 3 N ti 3, y 5 ^ 3 y N W 0 IL ae000 n powo 60 J iE LR1iJ m Z z O c� —m Z m ;OM z;o mZ , ] » E. a . a & . «� ! ; 54'| § 2°° ■ | 2 . . lE2m: ■ |- . . ' . bD Ln = f a � . J \\ ( ) , 7ID .. mz ;o -� r� /z Water 0 ality Event Summary Flow, Flow, Treatment Basin Area Basin Area Composite Q2 Wo Area Basin ID (s.f.) (ac) %Imperv. (Cfs) (Cfs) (sf) Al-A2 19,663 0.45 87% 1.12 0.56 17,671 PJB6 ll _i ,ILP W 0 Z m TN 00 �1Z n �0= 'r0 ■Z N • mdnm !O(/) »a`=3D� fD3 d o 2 O a a D A � a D p 3 X W tJ W O W Project: Brownes on Howes Chamber Model- M StormTech UnIts- Im rlal Number of Chambers - 31 Number of End Caps - 2 Voids In the atone 1porasilvl - 40 &. Base of STONE Elevation - 100.00 ft D 'ft"°0M Amount of Stone Above Chambers- 15 in Amount of Stale Belm Chambers - 9 in ', 00 0 00 000 000 3993 3993 5338,25 10692 0.00 000 000 0.00 39.93 39.93 5298.32 10613 0.00 000 000 0.00 39.93 39,93 5258.39 106.75 0,00 000 000 0.00 39.93 39.93 5218,45 106.67 0.00 000 000 0,00 39.93 39.93 5178,52 106SB 0.00 000 0.00 0.00 39.93 39,93 5138S9 106.50 000 0.00 0 00 000 3993 3993 5098.66 1118 42 0.00 0.00 0.D0 0.00 39.93 39.93 5058.73 108.33 0.00 0.00 0.00 0.00 39.93 39.93 501879 106.25 0.00 020 0.00 0.00 39.93 39.93 4970.86 108,17 0.00 0.00 0,00 D.00 39.93 39.93 4938.93 106.08 0.00 0.00 0.00 0.00 39.93 39.93 4899.00 106.00 0.00 0.00 0.00 0.00 39.93 39.93 4859.06 105,92 0.00 0.00 0.D0 0.D0 39.93 39.93 4819.13 105B3 0.04 0.00 1.27 0.00 39.42 40.69 4779.20 10575 0.12 0.01 3.60 0.02 38.48 42.10 4738.51 105.67 0.15 0.03 5A1 0.05 37.87 43.03 4696.40 105.58 021 0.05 6.47 0.10 37.31 43.87 4653.37 105.50 0.27 0.07 8.32 0.14 36.55 45.00 4609.50 105.42 0,45 0.00 14.04 0.18 34.25 48.46 4564.50 105.33 0.67 0.11 20.62 0.23 31.59 52.44 4516.04 105.25 0.80 0.14 24.77 0.28 29.91 54.96 4463.60 105.17 0.91 0,17 29.15 0.34 28.54 57.02 4400S3 10508 100 0,19 31.09 0.38 27.34 58.82 4351.61 105.00 1.09 0.22 3371 0.43 26.2E 60.41 429279 104.92 1.16 024 36.07 0.48 25.31 61.86 4232.3B 104.83 123 0.27 38.25 0.54 24.41 63.21 4170.61 104.75 1.30 0.30 40.29 0.60 23.58 64.46 4107.31 104.67 136 0.32 42.19 0,65 22.80 65.64 4042.84 104.58 1.42 0.35 43.98 0.70 22.06 66.74 397721 104.50 1.47 0.37 45.67 0.74 21,37 67.78 3910.47 104.42 1.53 0.39 47.28 0.79 20.71 68.77 3842.89 104.33 1.57 0.42 48.81 0.83 20.07 69.72 3773.91 10425 1.62 0,44 50.26 0.98 19.47 70.62 3704.20 104.17 1IT 0.46 51.65 0.93 1820 71.48 3633.68 104.08 1.71 0.48 52.98 0.97 18.35 T2.30 3562.10 104.D0 1.75 0.50 54.25 1.01 17.03 73.09 3489.80 103.92 119 0.53 55.47 1.D5 17.32 73.84 3416.71 103.83 1.83 0.56 56.64 1.00 16.84 74.57 3342.86 103.75 1.86 0.56 57.77 1.13 16.37 75.27 3268.29 103.67 1.90 0.58 SB.85 1.17 15.03 75.94 3193.02 103.58 1.93 0.60 59B9 1.20 15.60 76.59 3117.08 103.50 1.96 0.62 60.89 1.24 15.09 77.21 3040.49 103.42 2.00 0.64 61.85 1.28 14.68 77.6'I 2963.28 103.33 2.03 0.66 62.78 1.31 14.3D 78.38 2885.48 103.25 2.05 0.67 63.67 1.35 13.83 78.94 2507.09 103.17 2.08 0.69 64.53 1.38 13,57 79.48 2728.15 103.08 2.11 0.71 65.35 1.41 13.23 79.99 2648.68 103A0 2.13 0.72 66.15 1.45 12.89 8049 2568.88 102.92 2.16 0.74 66.92 1.48 12.57 80.97 2488.19 102.83 2.18 0.76 67.66 1,51 12.26 81.43 2407.22 102.75 2.21 0.77 68.37 1.54 11.07 81.88 2325.79 102.67 2.23 079 69.06 1.57 11.68 82.31 2243.91 102.68 2.25 0.80 69.71 160 11.40 82.72 2181.80 102.50 2,27 0.82 70.35 1.64 11.14 83.13 2078.87 102.42 2.29 0.84 70.96 1.68 10.88 83.52 1995.75 102.33 231 0,85 71.54 180 10.64 83.87 1912.23 102.25 2.33 0.86 72.10 1.72 10.40 84.23 1828.30 102.17 2.34 0.87 72.64 1.74 10.18 84S6 1744.13 102.08 2.38 0.89 73.16 1.77 9.98 64.80 1659.57 102.00 2.38 0.90 73.65 1.80 9.75 $5.20 1574.60 101.92 2.39 0.91 74.12 1.82 9.58 85.50 1489.48 101.83 2.41 0.92 74.57 1.84 9.37 85.78 1403.98 101.75 2.42 0.93 75.00 1.87 9.19 86.05 1318.20 101.67 2.43 0.95 75.40 1.89 9.01 86.31 1232.15 101.68 2.44 0.96 75.79 1.91 8.85 86.55 1145.84 101.50 2.d6 0.97 76.16 1.93 8.70 86.79 1059.29 101.42 2,47 0.98 76.50 1.96 8.56 87.01 972.50 101.33 2.48 0.99 76.93 1.98 8.41 87.21 885.49 10125 2.49 1.00 77.14 2.00 8.28 97.41 798.28 101.17 2.50 1.01 77.43 2.01 8.16 87.60 710.87 101.08. 2.51 1.02 77.70 2,03 8.04 87.77 623.27 101.00 2.51 1.02 77.96 2,05 7.93 97.94 535.5D 100.92 2.53 1.03 78.33 2.07 7.77 88.17 447.56 100.83 0.00 0.00 0.00 0.00 39.93 30.93 350.30 100.75 0.00 0.00 0.00 0.00 39.93 39.93 319.46 100.67 0.00 0.00 0.00 0.00 39B3 39.93 279.53 100,58 0.00 0.00 0.00 0.00 39.93 39.93 239.59 100.50 0.00 0.00 0.00 0.00 39.93 30.93 199.66 100.42 0.00 0.00 0.00 0.00 39.93 39.83 159.73 100.33 M00 0.00 0.00 0.00 39,93 39.93 119.80 100.25 0.00 0.00 0.00 0.00 39.93 39.93 79.86 100.17 0.00 0.00 0.00 0.00 39.93 39.93 39.93 100.08