HomeMy WebLinkAboutCorrespondence: Response CrossRoads, G Ilko643 Massachusetts Avenue, Suite 200
Indianapolis, IN 46204
Phone: 317-423-3305
Fax: 317-423-3306
May 31, 2012
Greg Ilko, PE
CrossRoad Engineers, PC
3417 Sherman Drive
Beech Grove, IN 46107
Subject: Walnut Creek Drive Extension
Dear Mr. Ilko:
This letter is in response to your TAC Review letter dated April 29, 2011, regarding the above referenced
project. Information is being provided to coordinate final approval on behalf of Bill Armstrong. The following
describes the action taken or not taken for each of the comments:
General Information
1.A detailed Drainage Summary is provided in the lower left hand corner of Sheet C2.0. Storm sewer
basin information has been incorporated into the plan view as well.
2.A Storm Structure Data Table has been added to the upper left hand corner of Sheet C2.0.
3.Hydraulic grade line calculations are incorporate into the Storm Drain Flow Tabulation Form-Rational
Method. The 10-yr HGL is below the crown of pipe in all instances. The 100-yr HGL is below the
casting elevations in all instances as well. See attached spreadsheets.
I hope the above addresses your concerns and we look forward to receiving final approval for the project.
Thank you.
Sincerely,
Civil Site Group, Inc.
Brian S. Cross, P.E.
Principal
Cc: Bill Armstrong, Armstrong Development, Inc.
Attachments: Revised Plans (1 set plans, storm sewer calcs.)
STORM SEWER STRUCTURE DATA TABLE
PIPE CASTING PIPE WALL DIRECTION PIPE PIPE SUMP
TC/RIM COVER STR. SIZE TYPE PIPE SIZE THICKNESS OF PIPE IN / SLOPE LENGTH DEPTH
STR. #ELEVINV. ININV. OUT(FEET)(INCHES)STR. TYPE(NEENAH)(INCHES)(INCHES)OUT(%)(FEET)(FEET)
611882.25874.90874.805.2072MH2015243W / NE0.4570N/A
613883.00875.63875.505.2572MH2015243S / E0.45132N/A
614882.90875.82875.724.9372MH1772243SE / N0.12775
615882.50N/A876.004.2560MH1772243" / NW0.12150N/A
701881.00N/A878.101.1960MH4342182.5" / NE0.23432
702GUT=
882.5N/A877.003.7948MH3287-10V182.5" / NE0.30162
703GUT=
882878.40878.302.2648MH3287-10V152.25" / NE0.25202
704881.5N/A878.501.8324TYPE A4342122" / NE0.3033N/A
705GUT=
882N/A878.002.5624x36TYPE J3287-10V152.25" / SW0.25182
706GUT=
882.5N/A878.003.0648MH3287-10V152.25" / SW0.20162
CIVIL SITE GROUP, INC
05/31/12
STORM DRAIN FLOW TABULATION FORM - RATIONAL METHOD
WALNUT CREEK DRIVE EXTENSIONBSC
PROJECT NAMECOMPUTED BY:
ADI.002BSC
PROJECT No.CHECKED BY:
STORM FREQUENCY DESIGN YEAR10
ARMSTRONG ARM EXTENSION
C A L C U L A T E D D E S I G NHGLHeadloss
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =PIPE (full) n =0.012PipePipeMax QMax VMANHOLEin MHMHDEPTHCoeff. atLOCATIONTop
out MH
fromtoAREAsubtotal"C"CACAinletdraintotal"I"CIAsizeslopevel.lengthslopefullfullINV outINV inTC-INVManholeFROMTOPipeHGL
6150.000.680.00556.400.00T.C.=882.50877.80615
6156.500.50878.00877.80
6156140.460.338.294.4012.695.411.79240.010.571500.128.492.70876.00875.82877.74615614
Cover =4.50877.82877.74
6140.000.150.00556.400.00T.C.=882.90877.56614
6147.180.50877.72877.56
6146132.251.5312.690.5813.284.526.91240.082.20770.128.492.70875.72875.63877.51614613
Cover =5.18877.63877.51
6130.050.150.01556.400.05T.C.=883.00877.41613
6137.500.50877.50877.41
6136112.301.5413.281.0214.294.426.80240.082.161320.4516.435.23875.50874.90877.20613611
Cover =5.50876.90877.20
6110.070.150.01556.400.07T.C.=882.25876.61611
6117.450.50876.80876.61
611END2.371.5514.290.5514.854.276.61240.072.10700.4516.435.23874.80874.49876.40611END
Cover =5.45876.49876.40
876.09
START HGL
7050.270.740.20556.401.28GUT=882.00879.36705
7054.000.50879.25879.36
7056150.270.205.000.295.296.401.28150.031.04180.253.502.85878.00877.96879.30705615
Cover =2.75879.21879.30
878.96
START HGL
7040.120.590.07775.850.41T.C.=881.50879.52704
7043.000.50879.50879.52
7047030.120.0771.047.735.850.41120.010.53330.302.112.69878.50878.40879.46704703
Cover =2.00879.40879.46
7030.070.850.06556.400.38GUT=882.00879.36703
7033.700.50879.55879.36
7036150.190.137.730.578.295.550.72150.010.59200.253.502.85878.30878.25879.30703615
Cover =2.45879.50879.30
879.25
START HGL
7060.400.740.30556.401.89GUT=882.50879.05706
7064.500.50879.25879.05
7066140.400.305.000.175.176.401.89150.071.54160.203.132.55878.00877.97879.00706614
Cover =3.25879.22879.00
878.97
START HGL
7021.390.650.90556.405.78GUT=882.50878.30702
7025.500.50878.50878.30
7026141.390.905.000.085.086.405.78180.263.27160.306.233.53877.00876.95878.20702614
Cover =4.00878.45878.20
878.15
START HGL
7011.000.680.68556.404.35T.C.=881.00879.37701
7012.900.50879.60879.37
701EX11.000.685.000.295.296.404.35180.152.46430.235.463.09878.10878.00879.30701EX1
Cover =1.40879.50879.30
879.20
START HGL
Page 1
CIVIL SITE GROUP, INC
05/31/12
STORM DRAIN FLOW TABULATION FORM - RATIONAL METHOD
WALNUT CREEK DRIVE EXTENSIONBSC
PROJECT NAMECOMPUTED BY:
ADI.002BSC
PROJECT No.CHECKED BY:
STORM FREQUENCY DESIGN YEAR100
ARMSTRONG ARM EXTENSION
C A L C U L A T E D D E S I G NHGLHeadloss
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =PIPE (full) n =0.012PipePipeMax QMax VMANHOLEin MHMHDEPTHCoeff. atLOCATIONTop
out MH
fromtoAREAsubtotal"C"CACAinletdraintotal"I"CIAsizeslopevel.lengthslopefullfullINV outINV inTC-INVManholeFROMTOPipeHGL
6150.000.680.00559.120.00T.C.=882.50877.80615
6156.500.50878.00877.80
6156140.460.337.802.9810.777.992.64240.010.841500.128.492.70876.00875.82877.74615614
Cover =4.50877.82877.74
6140.000.150.00559.120.00T.C.=882.90877.56614
6147.180.50877.72877.56
6146132.251.5310.770.3711.157.0910.85240.203.45770.128.492.70875.72875.63877.51614613
Cover =5.18877.63877.51
6130.050.150.01559.120.07T.C.=883.00877.41613
6137.500.50877.50877.41
6136112.301.5411.150.6411.796.9910.75240.193.421320.4516.435.23875.50874.90877.20613611
Cover =5.50876.90877.20
6110.070.150.01559.120.10T.C.=882.25876.61611
6117.450.50876.80876.61
611END2.371.5511.790.3512.136.8310.58240.193.37700.4516.435.23874.80874.49876.40611END
Cover =5.45876.49876.40
876.09
START HGL
7050.270.740.20559.121.82GUT=882.00879.36705
7054.000.50879.25879.36
7056150.270.205.000.205.209.121.82150.071.48180.253.502.85878.00877.96879.30705615
Cover =2.75879.21879.30
878.96
START HGL
7040.120.590.07778.400.59T.C.=881.50879.52704
7043.000.50879.50879.52
7047030.120.0770.737.418.400.59120.020.76330.302.112.69878.50878.40879.46704703
Cover =2.00879.40879.46
7030.070.850.06559.120.54GUT=882.00879.36703
7033.700.50879.55879.36
7036150.190.137.410.397.808.131.06150.020.86200.253.502.85878.30878.25879.30703615
Cover =2.45879.50879.30
879.25
START HGL
7060.400.740.30559.122.70GUT=882.50879.05706
7064.500.50879.25879.05
7066140.400.305.000.125.129.122.70150.152.20160.203.132.55878.00877.97879.00706614
Cover =3.25879.22879.00
878.97
START HGL
7021.390.650.90559.128.24GUT=882.50878.30702
7025.500.50878.50878.30
7026141.390.905.000.065.069.128.24180.524.66160.306.233.53877.00876.95878.20702614
Cover =4.00878.45878.20
878.15
START HGL
7011.000.680.68559.126.20T.C.=881.00879.37701
7012.900.50879.60879.37
701EX11.000.685.000.205.209.126.20180.303.51430.235.463.09878.10878.00879.30701EX1
Cover =1.40879.50879.30
879.20
START HGL
Page 1
CIVIL SITE GROUP, INC.
05/31/12
EXISTING RUNOFF CALCULATION - RATIONAL METHOD
WALNUT CREEK DRIVE EXTENSION
PROJECT NAMEPROJECT No.ADI.002
STORM FREQUENCY DESIGN YEAR2
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =
fromtoAREAsubtotal"C"CACAinletdraintotal"I"CIA
PRE
3.260.150.4910103.621.77
STORM FREQUENCY DESIGN YEAR10
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =
fromtoAREAsubtotal"C"CACAinletdraintotal"I"CIA
PRE
3.260.150.4910105.482.68
STORM FREQUENCY DESIGN YEAR100
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =
subtotal"C"CCinletdraintotal"I"CI
fromtoARE
AAAA
PRE
3.260.150.4910107.773.80
Page 1
CIVIL SITE GROUP, INC.
PROPOSED RUNOFF CALCULATION - RATIONAL METHOD
WALNUT CREEK DRIVE EXTENSION
PROJECT NAMEPROJECT No.ADI.002
STORM FREQUENCY DESIGN YEA2
R
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =
fromtoAREsubtotal"C"CCinletdraintotal"I"CI
AAAA
POST
3.260.682.221453.086.82
STORM FREQUENCY DESIGN YEA10
R
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =
fromtoAREsubtotal"C"CCinletdraintotal"I"CI
AAAA
POST
3.260.682.2214144.7110.43
STORM FREQUENCY DESIGN YEA100
R
LOCATIONINLETACRESCOEF.SUMTIME CONC. (min)INT."Q" =
fromtoAREsubtotal"C"CCinletdraintotal"I"CI
AAAA
POST
3.260.682.2214146.7414.94
Page 2