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Standard Drawings

Standard Drawings for Sanitary Works
Drawing NoDrawing TitlePDF
3-1cLayout of Sanitary Drainage System (updated 1st Dec 2021)
3-2bDischarge Pipe & Floor Waste Connection on Ground Level (updated 1st Dec 2021)
3-3bDischarge Stack Connection with Backdrop to Inspection Chamber (updated 1st Dec 2021)
3-4bBackdrop and Tumbling Bay Details (updated 1st Dec 2021)
3-5bType Bedding for Drain-line & Discharge Pipe (updated 1st Dec 2021)
3-6bGround Level Floor Trap with or without a Sump (for Connection to Inspection Chamber) (updated 1st Dec 2021)
3-7cInspection Chamber (IC) and Break Joint for Drain-Line (updated 1st Dec 2021)
3-8bWash Area (updated 1st Dec 2021)
3-9dSanitary Drainage System for Hawker Centre/Food Court (updated 1st Dec 2021)
3-10cWaste Sump (for Sullage Water Drainage) (updated 1st Dec 2021)
3-11cSanitary Drainage System for Typical Bin Centre (updated 1st Dec 2021)
3-12cSanitary Plumbing and Drainage System for Market (updated 1st Dec 2021)
3-13bFloor Sump for Market (updated 1st Dec 2021)
3-14bSanitary Drainage System for Toilet at Beach Site/Construction Site (updated 1st Dec 2021)
3-15cFully Ventilated System (without Secondary Discharge Stack) for Landed Housing (updated 1st Dec 2021)
3-16cFully Ventilated System (with Secondary Discharge Stack) for All Buildings (updated 1st Dec 2021)
3-17dSingle Stack System for Building up to 6 Storeys (updated 1st Dec 2021)
3-18dVentilated Stack System for All Buildings (updated 1st Dec 2021)
3-19dFloor Trap and Water Closet Pan Connected in Series (updated 1st Dec 2021)
3-20bConnection of Floor Trap Ventilating Pipe to Ventilating Stack (updated 1st Dec 2021)
3-21bOffset and Cross-Vent Pipe (updated 1st Dec 2021)
3-22bDetails of Connection between Discharge Stacks and Inspection Chamber (below Ground Level) (updated 1st Dec 2021)
3-23bJointing of Outlet of Pedestal Water Closet to Discharge Pipe (updated 1st Dec 2021)
3-24bWash Basin Connected in Series to a Common Waste Pipe (updated 1st Dec 2021)
3-25bVentilating Pipe Requirements for Urinals Connected in Series (updated 1st Dec 2021)
3-27aSanitary Plumbing System for Prefabricated Toilet (updated 1st Dec 2021)
3-28aConnection of Discharge Stacks to a Common Discharge Pipe at Basements (updated 1st Dec 2021)
3-29aSanitary Plumbing System for Hawker Centre/Food Court at Upper Storey Level (updated 1st Dec 2021)
List of Appendices and Standard Drainage Drawings

TitlePDFGIF
Drainage Reserve Requirements
Submission Requirement for Flood Protection Measures
Principles and Standards for Flood Protection of Underground Rapid Transit System (TEXT)
Rainfall Intensity-Duration-Frequency for Singapore Island Submission
Submission Requirements for "As Constructed" Drainage Drawings (TEXT)
Submission Requirement for Earth Control Measures
Soil Erodibility Chart
Standard Drawings for Sewerage Works
Drawing NoDrawing TitlePDF
PUB/WRN/STD/001BSTANDARD DETAILS OF SEWERS AND MANHOLES
PUB/WRN/STD/003APRECAST CONCRETE MANHOLE PARTS
PUB/WRN/STD/004BSTANDARD 45 DEG BEND MANHOLE FOR SEWERS 1000mm DIA. AND ABOVE
PUB/WRN/STD/005BSTANDARD MANHOLE FOR SEWERS 1000mm AND ABOVE
PUB/WRN/STD/006BSTANDARD DETAILS OF DEEP PRECAST CONCRETE MANHOLE WITH ONE INTERMEDIATE PLATFORM
PUB/WRN/STD/007BSTANDARD DETAILS OF SEWER CONNECTIONS
PUB/WRN/STD/008 DETAILS 0F MULTISTRAND POLY-PROPYLENE NYLON ROPE NETTING
PUB/WRN/STD/009AVORTEX DROP
PUB/WRN/STD/010ASTANDARD DETAILS OF GROUND MARKERS ALONG THE ROUTES OF DEEP TUNNELS AND CURVED SEWERS
PUB/WRN/STD/011MANHOLE ON SLOPE
PUB/WRN/STD/015ASTANDARD HEAVY DUTY MANHOLE FRAME AND COVER
PUB/WRN/STD/016ASTANDARD MEDIUM DUTY MANHOLE FRAME AND COVER
PUB/WRN/STD/017ASTANDARD INSPECTION CHAMBER FRAME AND COVER
PUB/WRN/STD/018ARECESSED TYPE LIGHT DUTY INSPECTION CHAMBER FRAME AND COVER
PUB/WRN/STD/040BStandard Circular Grease Trap (Capacity Equivalent to NS 4 of BS EN 1825) (updated 1st Dec 2021)
PUB/WRN/STD/041BStandard Grease Trap (Capacity Equivalent to NS 2 of BS EN 1825) (updated 1st Dec 2021)
PUB/WRN/STD/042BStandard Oil Interceptor (updated 1st Dec 2021)
PUB/WRN/STD/043BCast Iron Gully Trap for Sheltered Car Washing Area in Carpark (updated 1st Dec 2021)
PUB/WRN/STD/044BCast Iron Gully Trap for Bin Centre (updated 1st Dec 2021)
PUB/WRN/STD/045BCast Iron Gully Trap for Market (updated 1st Dec 2021)
PUB/WRN/STD/046BStandard Alum. Alloy Strainer Bucket and C.I. Gully Trap (withdrawn 1st Dec 2021)
PUB/WRN/STD/102ADETAILS OF ANODISED ALUMINIUM ALLOY HANDRAIL AND SAFETY CHAIN
 
 
 
 
Standard Drawings for Water Supply Works
Drawing NoDrawing TitlePDF
PUB/WSN/CP/001Content Page
PUB/WSN/GN/001General Notes
PUB/WSN/STD/001Details of Pipe Specials (1 of 2)
PUB/WSN/STD/002Details of Pipe Specials (2 of 2)
PUB/WSN/STD/003Details of Butt Strap Joint, Canted Collar Joint, Socket & Spigot Joint and External Joint Coating & Internal Lining
PUB/WSN/STD/004Details of Puddle Flange, Retaining Ring, Dished End, Conical Blank End with 300 mm dia offtake
PUB/WSN/STD/005Joint Harness for 700 mm – 1800 mm dia pipe
PUB/WSN/STD/101Typical Access Manhole Chamber (Up to 6 m depth)
PUB/WSN/STD/102Typical Deep Access Manhole Chamber (Depth from 6 m to 9 m) and (Depth Exceeding 9 m to 12 m)
PUB/WSN/STD/103Typical Access Manhole Chamber with sensors (Up to 6 m depth)
PUB/WSN/STD/104Typical Ultrasonic Flow Meter (USSFM) Chamber (Depth up to 6 m)
PUB/WSN/STD/105Typical Air Valve Chamber (for 700 – 1800 mm dia pipelines)
PUB/WSN/STD/106Typical Assembly Air Valve Chamber for 1900 / 2200 mm dia pipelines
PUB/WSN/STD/107Typical Off-Road Air Valve Chamber for 700 mm to 1800 mm dia pipelines
PUB/WSN/STD/108Typical Butterfly Valve Chamber with By-pass, Deep Washout and Air Valve
PUB/WSN/STD/109Details of Dismantling Joint, Lifting Rings With Hooks and Keyless Manhole Frame & Cover
PUB/WSN/STD/110Typical Washout Chamber (Up to 6 m depth)
PUB/WSN/STD/111Typical Deep Washout Chamber (Depth from 6 m to 9 m)
PUB/WSN/STD/112Typical Off-Road Air Valve Chamber for 1900 mm to 2200 mm dia pipelines
PUB/WSN/STD/113Aluminium Alloy Marker Plate For Butterfly Valve Chamber
PUB/WSN/STD/115Typical Deep Vertical Pipe With Air Valve Assembly
PUB/WSN/STD/116Typical Deep Vertical Pipe With Indirect Washout and Air Valve Assembly
PUB/WSN/STD/117Chamber for Electromagnetic ‘Insertion Type’ Flow meter With Sensors Assembly
PUB/WSN/STD/118Details of Air Vent With Hood and Heavy Duty UPVC Vent Pipe For Air Valve Chamber and Off-road Air Valve Chamber (For 1900 mm and 2200 mm dia Pipelines
PUB/WSN/STD/119Connection of Washout Pipe to Drain
PUB/WSN/STD/201Details of Trench Excavation and Reinstatement Constructed By Open-Cut Method (For 700 – 2200 mm dia steel pipes)
PUB/WSN/STD/202Composite Pipe For Pipe Laying in Trench
PUB/WSN/STD/203Pipelaying under Rigid Pavement and Traffic Junctions
PUB/WSN/STD/204Standard Heavy Duty Ductile Iron (Grade A1) Manhole Frame and Cover (For Chamber Access)
PUB/WSN/STD/205Standard Rectangle Ductile Iron (Grade A1) Manhole Frame and Cover (For Sluice Valve Before Hydrant)
PUB/WSN/STD/206Standard Square Ductile Iron (Grade A1) Manhole Frame and Cover (For Ground Hydrant)
PUB/WSN/STD/207Lengthening Key Support
PUB/WSN/STD/208Test Connection Details and Tangential Offtake for Draining Off during Link up Works
PUB/WSN/STD/209Stainless Steel (Type 304) Ladder and Stainless Steel Landing Platform
PUB/WSN/STD/210PVC Warning Marker, Ground Hydrant Chamber and Brick Chamber for 100 - 300 mm Dia Sluice Valve
PUB/WSN/STD/211Wall Reinforcement, Opening Reinforcement, Wall Construction Joint Detail
PUB/WSN/STD/212Ground and Signboard Markers
PUB/WSN/STD/214Typical Arrangement of Various Chambers For Pipes Undercrossing Existing Drain and Services
PUB/WSN/STD/215Project Signboard Details
PUB/WSN/STD/216Typical Site Hoarding Details
PUB/WSN/STD/218RC Cladding Details For Composite Pipes For Pipe Jacking
PUB/WSN/STD/219Standard Heavy Duty Ductile Iron (Grade A1) Manhole Frame and Cover For Valve Spindle