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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 (Superseded by PUB/WRN/STD/011A)
PUB/WRN/STD/011AMANHOLE 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 [Will be invalid from 1 Jun 2024 onwards.]
PUB/WRN/STD/102BDETAILS OF HANDRAIL AND SAFETY CHAIN/ROPE [For compliance from 1 Jun 2024 onwards.]
 
 
 
 
Standard Drawings for Water Supply Works
Drawing NoDrawing TitlePDF
PUB-WSN-DL-001LIST OF STANDARD DRAWINGS (1 OF 2)
PUB-WSN-DL-002LIST OF STANDARD DRAWINGS (2 OF 2)
PUB-WSN-GN-001General Notes
PUB-WSN-STD-001STEEL PIPE FITTINGS (1 OF 2)
PUB-WSN-STD-002STEEL PIPE FITTINGS (2 OF 2)
PUB-WSN-STD-003BUTT STRAP JOINT, CANTED COLLAR JOINT, SOCKET & SPIGOT JOINT AND EXTERNAL JOINT COATING & INTERNAL LINING
PUB-WSN-STD-004PUDDLE FLANGE, RETAINING RING, DISHED END, CONICAL BLANK END WITH 300MM DIA. OFFTAKE
PUB-WSN-STD-005JOINT HARNESS FOR 700MM - 1900MM DIA. STEEL PIPELINES
PUB-WSN-STD-101ACCESS MANHOLE CHAMBER (UP TO 6M DEPTH)
PUB-WSN-STD-102DEEP ACCESS MANHOLE CHAMBER (DEPTH FROM 6M TO 9M) AND (DEPTH EXCEEDING 9M TO 12M)
PUB-WSN-STD-103ACCESS MANHOLE CHAMBER WITH SENSORS (UP TO 6M DEPTH)
PUB-WSN-STD-104ULTRASONIC FLOWMETER (USFM) CHAMBER (UP TO 6M DEPTH)
PUB-WSN-STD-105AIR VALVE CHAMBER WITH PA / LEAK DETECTION OR WQPA SENSORS (FOR 700MM - 1800MM DIA. PIPELINES)
PUB-WSN-STD-106AIR VALVE CHAMBER (FOR 1900MM AND 2200MM DIA. PIPELINES)
PUB-WSN-STD-107OFF-ROAD AIR VALVE CHAMBER (FOR 700MM - 1800MM DIA. PIPELINES)
PUB-WSN-STD-108BUTTERFLY VALVE CHAMBER WITH BY-PASS, DEEP WASHOUT AND AIR VALVE
PUB-WSN-STD-109DISMANTLING JOINT, LIFTING RINGS WITH HOOKS AND KEYLESS MANHOLE FRAME & COVER
PUB-WSN-STD-110WASHOUT CHAMBER (UP TO 6M DEPTH)
PUB-WSN-STD-111DEEP WASHOUT CHAMBER (DEPTH FROM 6M TO 9M)
PUB-WSN-STD-112OFF-ROAD AIR VALVE CHAMBER (FOR 1900MM AND 2200MM DIA. PIPELINES)
PUB-WSN-STD-113ALUMINIUM ALLOY MARKER PLATE FOR BUTTERFLY VALVE CHAMBER
PUB-WSN-STD-115DEEP VERTICAL PIPE WITH AIR VALVE ASSEMBLY
PUB-WSN-STD-116DEEP VERTICAL PIPE WITH INDIRECT WASHOUT AND AIR VALVE ASSEMBLY
PUB-WSN-STD-117CHAMBER FOR ELECTROMAGNETIC 'INSERTION TYPE' FLOWMETER WITH SENSORS ASSEMBLY
PUB-WSN-STD-118AIR VENT WITH HOOD AND HEAVY DUTY UPVC VENT PIPE FOR AIR VALVE CHAMBERS (FOR 1900MM AND 2200MM DIA. PIPELINES)
PUB-WSN-STD-119CONNECTION OF WASHOUT PIPE TO DRAIN
PUB-WSN-STD-120 INSTALLATION OF LEAK DETECTION SENSOR ASSEMBLY IN EXISTING AIR VALVE CHAMBER
PUB-WSN-STD-201TRENCH EXCAVATION AND REINSTATEMENT (FOR 700MM - 2200MM DIA. STEEL PIPELINES)
PUB-WSN-STD-202COMPOSITE PIPE FOR LAYING IN TRENCH
PUB-WSN-STD-203PIPE LAYING UNDER RIGID PAVEMENT AND TRAFFIC JUNCTIONS
PUB-WSN-STD-204HEAVY DUTY DUCTILE IRON (GRADE A1) MANHOLE FRAME AND COVER FOR CHAMBER ACCESS
PUB-WSN-STD-205RECTANGLE DUCTILE IRON (GRADE A1) MANHOLE FRAME AND COVER (FOR SLUICE VALVES)
PUB-WSN-STD-206SQUARE DUCTILE IRON (GRADE A1) MANHOLE FRAME AND COVER (FOR GROUND HYDRANT)
PUB-WSN-STD-207SUPPORT FOR LENGTHENING KEYS
PUB-WSN-STD-208TEST CONNECTION ASSEMBLIES AND TANGENTIAL OFFTAKE FOR DRAINING OFF DURING LINK UP WORKS
PUB-WSN-STD-209STAINLESS STEEL LADDER AND LANDING PLATFORM
PUB-WSN-STD-210PVC WARNING MARKER, GROUND HYDRANT AND BRICK CHAMBER FOR SLUICE VALVES
PUB-WSN-STD-211WALL REINFORCEMENT, OPENING REINFORCEMENT AND WALL CONSTRUCTION JOINT
PUB-WSN-STD-212GROUND AND SIGNBOARD MARKERS
PUB-WSN-STD-214ARRANGEMENT OF VARIOUS CHAMBERS FOR PIPES UNDERCROSSING EXISTING DRAIN AND SERVICES
PUB-WSN-STD-215PROJECT SIGNBOARD
PUB-WSN-STD-216SITE HOARDING
PUB-WSN-STD-217CONNECTION OF 800MM DIA. STEEL PIPELINE TO 100MM - 500MM DIA. DISTRIBUTION PIPELINES
PUB-WSN-STD-218RC CLADDING FOR COMPOSITE PIPES FOR PIPE JACKING
PUB-WSN-STD-219HEAVY DUTY DUCTILE IRON (GRADE A1) MANHOLE FRAME AND COVER FOR VALVE SPINDLES
PUB-WSN-STD-301TRENCH EXCAVATION AND REINSTATEMENT FOR 100MM - 500MM DIA. DUCTILE IRON PIPELINES
PUB-WSN-STD-302CONCRETE PADS, THRUST AND ANCHOR BLOCKS FOR DUCTILE IRON PIPELINE
PUB-WSN-STD-303INSTALLATION OF DOUBLE PILLAR HYDRANT ON TURFED AREAS
PUB-WSN-STD-304INSTALLATION OF GROUND HYDRANT FOR DUCTILE IRON PIPELINE
PUB-WSN-STD-305GROUND HYDRANT INDICATOR PLATE
PUB-WSN-STD-306SPINDLE CAP FOR SLUICE VALVES
PUB-WSN-STD-307LAYOUT OF 100MM AND 150MM DIA. DUCTILE IRON CONNECTIONS
PUB-WSN-STD-309LAYOUT OF COPPER PIPE CONNECTION WITH METER TEE STACK RISER
PUB-WSN-STD-310LAYOUT OF COPPER PIPE CONNECTION WITH METER MANIFOLD RISER
PUB-WSN-STD-311COPPER PIPE CONNECTION
PUB-WSN-STD-313100MM DIA. DOUBLE PILLAR HYDRANT
PUB-WSN-STD-314150MM DIA. TRIPLE PILLAR HYDRANT
PUB-WSN-STD-315PRECAST RC CHAMBER FOR SLUICE VALVES
PUB-WSN-STD-316VALVE KEY AND KEY HANDLE FOR SLUICE VALVES
PUB-WSN-STD-317SLUICE VALVE CHAMBER FOR 500MM DIA. DUCTILE IRON PIPELINE
PUB-WSN-STD-318AIR VALVE CHAMBER FOR 500MM DIA. DUCTILE IRON PIPELINE
PUB-WSN-STD-319SENSOR ASSEMBLY FOR 500MM DIA. DUCTILE IRON PIPELINE
PUB-WSN-STD-320100MM / 150MM DIA. WASHOUT CHAMBER FOR 100MM - 500MM DIA. DUCTILE IRON PIPELINES
PUB-WSN-STD-321CHAMBER FOR SMALL AIR VALVES
PUB-WSN-STD-322THRUST BLOCK FOR DUCTILE IRON HORIZONTAL BENDS
PUB-WSN-STD-323IDENTIFICATION PLATE FOR SHALLOW PIPES
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