ABC Water Scope

ABC Waters Design HandoutINTRODUCTION | ABC WATERS FEATURES | MUSIC | SPREADSHEETTOK ZHAO CHINUNIVERSITY INTERN

ABC IntroductionActive : Create new community spaces, bring people closer to water

Beautiful : Transform waterway and reservoirs into aesthetically pleasing attractions that integrate with parks, estates and commercial development

Clean : Improve water quality, minimize water pollution

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Tok Zhao Chin () - Create beatiful and clean streams, rivers and lakes with postcard pretty community spaces for all to enjoy.Water Quality IndicatorsTSS: Total Suspended SolidsParticles that are sized 125m or larger that are found in water.

TP: Total Phosphorus causes many water quality problems including increased purification costs, decreased recreational and conservation value of an impoundments, loss of livestock and the possible lethal effect of algal toxins on drinking water.

TN: Total NitrogenLack of oxygen in water bodies, drinking water can be harmful to young infants or young livestock. Excessive nitrate can result in restriction of oxygen transport in the bloodstream

PUB Design Requirement:TSS 80%TP 45%TN 45%

BUILD A PEOPLE-WATER RELATIONSHIP

FeaturesFunctionsRemarksSedimentation BasinsRemove 70-90% of coarse to medium sediments from runoffProvide temporary retentionProtect downstream elementsPretreatmentUsed for small and large catchmentBioswalesBioretention SwalesRemove coarse to medium sediments from runoffProtect waterway from damage slow flow velocityBioretention used to partially treat water quality, attenuate flooding potential and convey stormwaterPretreatmentMax contributing area 2x veg height)0.0403Dimension the Swale ComponentQswale ( 2x veg ht)0.150Base Width0.8mSide Slopes - 1 in 3Longitudinal Slope0.66%Height0.20mMaximum Length of SwaleCross Sectional Area (A)0.28
Jamiil Shawotaully: Jamiil Shawotaully:Can we incorporate the Area formula in the spreadsheet?m2Wetted Perimeter (P)2.06mHydraulic Radius (R=A/P)0.136mRoughness Factor (n)0.15
Jamiil Shawotaully: Jamiil Shawotaully:Can we have a drop down menu to select the roughness factor?---

Swale Capacity0.040m3/sMaximum Length of Swale22.46m4Design Bioretention ComponentFilter media hydraulic conductivity180mm/hr 200mmFilter media depth600mmDrainage layer media (sand or fine screenings)2-5mm gravelDrainage layer depth200mmTransition layer depth100mmUnder-drain Design and Capacity Checks--

Flow capacity of filter media (maximum infiltration rate)0.0012m3/sPerforations inflow checkPipe diameter100mmNumber of pipes2Product Specification Clear Opening2100mm2/mAssumed Unblocked Opening1050mm2/mSlot Width1.5mmSlot Length7.5mmDiameter100mmNumber of slots per metre93.33Driving Head0.1mBlockage Factor0.5-Orifice Discharge Coefficient0.6---Capacity of perforations0.0018m3/sCHECK PERFORATION CAPACITY > FILTER MEDIA CAPACITYyesPerforated pipe capacityHydraulic Roughness0.015-Kinematic Viscosity of water0.000001007m2/sPipe Cross Secional Area0.01m2--

Pipe capacity0.0128m3/sCHECK PIPE CAPACITY > FILTER MEDIA CAPACITYyesCheck requirement for impermeable liningSoil hydraulic conductivity3.6mm/hrFilter media hydraulic conductivity180mm/hrMORE THAN 10 TIMES HIGHER THAN IN-SITU SOILS?yes
Jamiil Shawotaully: Jamiil Shawotaully:Any places where have specified the permeability of the insitu soil? Suggestion to include one and cross-check

BIORETENTION SWALE : DESIGN CALCULATION SUMMARY

CALCULATION SUMMARYCalculation TaskOutcomeCheck6Verification Checks - Scouring Vegetation ChecksVelocity for 10year ARI flow (