Scott White and Hookins LLP Harman House Andover Road Winchester Hampshire SO23 7BS T +44 (0)1962 844855 [email protected]Capacity Assessment Hero of Switzerland, Loughborough Junction, London Prepared by: .............................................. Harry Hunter BEng (Hons) GMICE Checked by: .............................................. Ian Llewellyn MEng (Hons) CEng MICE MIStructE
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Capacity Assessment Hero of Switzerland, Loughborough ...
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Hot Start (mins) 0 Inlet Coeffiecient 0.800Hot Start Level (mm) 0 Flow per Person per Day (l/per/day) 0.000
Manhole Headloss Coeff (Global) 0.500 Run Time (mins) 60Foul Sewage per hectare (l/s) 0.000 Output Interval (mins) 1
Number of Input Hydrographs 0 Number of Offline Controls 0 Number of Time/Area Diagrams 0Number of Online Controls 0 Number of Storage Structures 0 Number of Real Time Controls 0
Synthetic Rainfall Details
Rainfall Model FSR Profile Type SummerReturn Period (years) 100 Cv (Summer) 0.750
Region England and Wales Cv (Winter) 0.840M5-60 (mm) 20.100 Storm Duration (mins) 30
Ratio R 0.436
Scott-White & Hookins Page 342 West Street W02047London House Hero of SwitzerlandCarshalton SM5 2PR Existing Runoff RatesDate 03/09/2018 16:13 Designed by HHFile W0247 Existing runoff Rates.MDX Checked byMicro Drainage Network 2018.1
1 year Return Period Summary of Critical Results by Maximum Outflow (Rank 1) for Storm
Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000Foul Sewage per hectare (l/s) 0.000
Number of Input Hydrographs 0 Number of Offline Controls 0 Number of Time/Area Diagrams 0Number of Online Controls 0 Number of Storage Structures 0 Number of Real Time Controls 0
Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000Foul Sewage per hectare (l/s) 0.000
Number of Input Hydrographs 0 Number of Offline Controls 0 Number of Time/Area Diagrams 0Number of Online Controls 0 Number of Storage Structures 0 Number of Real Time Controls 0
Manhole Headloss Coeff (Global) 0.500 Flow per Person per Day (l/per/day) 0.000Foul Sewage per hectare (l/s) 0.000
Number of Input Hydrographs 0 Number of Offline Controls 0 Number of Time/Area Diagrams 0Number of Online Controls 0 Number of Storage Structures 0 Number of Real Time Controls 0
notes:Do not scale from drawings. All discrepancies to be reported to Gensler architect immediately.All dimensions to be verified by contractor on site prior to any works
lead consultant
consultant
title
ISSUED DATE: 13/08/18
Tel +44 (0)20 7073 9600Fax +44 (0)20 7539 1917
Aldgate House33 Aldgate High StreetLondon, EC3N 1AHUnited Kingdom
Scott-White & Hookins Page 142 West Street W02047London House Hero of SwitzerlandCarshalton SM5 2PR Attenuation CalcsDate 03/09/2018 17:45 Designed by HHFile W02047 Attenuation Calcs.SRCX Checked byMicro Drainage Source Control 2018.1
Summary of Results for 100 year Return Period (+40%)
15 min Summer 10.297 0.297 0.0 5.0 5.0 9.0 O K30 min Summer 10.336 0.336 0.0 5.0 5.0 10.2 O K60 min Summer 10.331 0.331 0.0 5.0 5.0 10.1 O K120 min Summer 10.266 0.266 0.0 5.0 5.0 8.1 O K180 min Summer 10.203 0.203 0.0 5.0 5.0 6.2 O K240 min Summer 10.157 0.157 0.0 5.0 5.0 4.8 O K360 min Summer 10.114 0.114 0.0 4.6 4.6 3.5 O K480 min Summer 10.097 0.097 0.0 3.8 3.8 2.9 O K600 min Summer 10.086 0.086 0.0 3.3 3.3 2.6 O K720 min Summer 10.079 0.079 0.0 2.8 2.8 2.4 O K960 min Summer 10.069 0.069 0.0 2.3 2.3 2.1 O K1440 min Summer 10.057 0.057 0.0 1.7 1.7 1.7 O K2160 min Summer 10.048 0.048 0.0 1.2 1.2 1.4 O K2880 min Summer 10.042 0.042 0.0 1.0 1.0 1.3 O K4320 min Summer 10.035 0.035 0.0 0.7 0.7 1.1 O K5760 min Summer 10.031 0.031 0.0 0.5 0.5 0.9 O K7200 min Summer 10.028 0.028 0.0 0.5 0.5 0.9 O K8640 min Summer 10.026 0.026 0.0 0.4 0.4 0.8 O K10080 min Summer 10.024 0.024 0.0 0.3 0.3 0.7 O K
15 min Winter 10.340 0.340 0.0 5.0 5.0 10.3 O K30 min Winter 10.380 0.380 0.0 5.0 5.0 11.5 O K60 min Winter 10.364 0.364 0.0 5.0 5.0 11.1 O K120 min Winter 10.261 0.261 0.0 5.0 5.0 7.9 O K180 min Winter 10.170 0.170 0.0 5.0 5.0 5.2 O K
StormEvent
Rain(mm/hr)
FloodedVolume(m³)
DischargeVolume(m³)
Time-Peak(mins)
15 min Summer 141.917 0.0 12.0 1530 min Summer 91.958 0.0 15.5 2560 min Summer 56.713 0.0 19.1 42120 min Summer 33.812 0.0 22.8 74180 min Summer 24.675 0.0 25.0 104240 min Summer 19.628 0.0 26.5 134360 min Summer 14.150 0.0 28.6 188480 min Summer 11.224 0.0 30.3 248600 min Summer 9.372 0.0 31.6 308720 min Summer 8.084 0.0 32.7 370960 min Summer 6.399 0.0 34.5 4901440 min Summer 4.596 0.0 37.2 7342160 min Summer 3.296 0.0 40.0 11002880 min Summer 2.602 0.0 42.1 14684320 min Summer 1.862 0.0 45.2 21885760 min Summer 1.467 0.0 47.5 28647200 min Summer 1.219 0.0 49.3 36488640 min Summer 1.047 0.0 50.9 440010080 min Summer 0.921 0.0 52.2 5024
15 min Winter 141.917 0.0 13.4 1630 min Winter 91.958 0.0 17.4 2660 min Winter 56.713 0.0 21.4 46120 min Winter 33.812 0.0 25.5 80180 min Winter 24.675 0.0 28.0 108
Scott-White & Hookins Page 242 West Street W02047London House Hero of SwitzerlandCarshalton SM5 2PR Attenuation CalcsDate 03/09/2018 17:45 Designed by HHFile W02047 Attenuation Calcs.SRCX Checked byMicro Drainage Source Control 2018.1
Summary of Results for 100 year Return Period (+40%)
240 min Winter 10.121 0.121 0.0 4.8 4.8 3.7 O K360 min Winter 10.094 0.094 0.0 3.7 3.7 2.8 O K480 min Winter 10.080 0.080 0.0 2.9 2.9 2.4 O K600 min Winter 10.072 0.072 0.0 2.5 2.5 2.2 O K720 min Winter 10.066 0.066 0.0 2.1 2.1 2.0 O K960 min Winter 10.057 0.057 0.0 1.7 1.7 1.7 O K1440 min Winter 10.048 0.048 0.0 1.2 1.2 1.4 O K2160 min Winter 10.040 0.040 0.0 0.9 0.9 1.2 O K2880 min Winter 10.035 0.035 0.0 0.7 0.7 1.1 O K4320 min Winter 10.030 0.030 0.0 0.5 0.5 0.9 O K5760 min Winter 10.026 0.026 0.0 0.4 0.4 0.8 O K7200 min Winter 10.024 0.024 0.0 0.3 0.3 0.7 O K8640 min Winter 10.022 0.022 0.0 0.3 0.3 0.7 O K10080 min Winter 10.021 0.021 0.0 0.3 0.3 0.6 O K
StormEvent
Rain(mm/hr)
FloodedVolume(m³)
DischargeVolume(m³)
Time-Peak(mins)
240 min Winter 19.628 0.0 29.7 132360 min Winter 14.150 0.0 32.1 190480 min Winter 11.224 0.0 33.9 250600 min Winter 9.372 0.0 35.4 310720 min Winter 8.084 0.0 36.7 370960 min Winter 6.399 0.0 38.7 4921440 min Winter 4.596 0.0 41.7 7342160 min Winter 3.296 0.0 44.8 11002880 min Winter 2.602 0.0 47.2 14324320 min Winter 1.862 0.0 50.7 22005760 min Winter 1.467 0.0 53.2 29047200 min Winter 1.219 0.0 55.3 35768640 min Winter 1.047 0.0 57.0 440010080 min Winter 0.921 0.0 58.5 5072
Scott-White & Hookins Page 342 West Street W02047London House Hero of SwitzerlandCarshalton SM5 2PR Attenuation CalcsDate 03/09/2018 17:45 Designed by HHFile W02047 Attenuation Calcs.SRCX Checked byMicro Drainage Source Control 2018.1
Rainfall Model FSR Winter Storms YesReturn Period (years) 100 Cv (Summer) 0.750
Region England and Wales Cv (Winter) 0.840M5-60 (mm) 20.000 Shortest Storm (mins) 15
Ratio R 0.432 Longest Storm (mins) 10080Summer Storms Yes Climate Change % +40
Time Area Diagram
Total Area (ha) 0.045
TimeFrom:
(mins)To:
Area(ha)
0 4 0.045
Scott-White & Hookins Page 442 West Street W02047London House Hero of SwitzerlandCarshalton SM5 2PR Attenuation CalcsDate 03/09/2018 17:45 Designed by HHFile W02047 Attenuation Calcs.SRCX Checked byMicro Drainage Source Control 2018.1
Control Points Head (m) Flow (l/s) Control Points Head (m) Flow (l/s)
Design Point (Calculated) 0.400 5.0 Kick-Flo® 0.312 4.5Flush-Flo™ 0.169 5.0 Mean Flow over Head Range - 4.0
The hydrological calculations have been based on the Head/Discharge relationship for the Hydro-Brake®Optimum as specified. Should another type of control device other than a Hydro-Brake Optimum® beutilised then these storage routing calculations will be invalidated