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Technical Details for Wash Basin Section and Elevation

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A wash basin is an essential plumbing fixture used in residential, commercial, and industrial buildings. The section and elevation drawings provide a detailed understanding of its installation, including piping connections, mounting details, drainage system, and material specifications.

1. Types of Wash Basin Installations

TypeDescriptionBest Used For
Wall-Mounted Wash BasinFixed directly onto the wall with bracketsSmall bathrooms, commercial spaces
Countertop Wash BasinPlaced on top of a counter or vanity unitModern bathrooms, hotels, luxury homes
Pedestal Wash BasinStandalone basin with a supporting pedestal to hide pipesHomes, public washrooms
Semi-Pedestal Wash BasinSimilar to pedestal but with a half-length supportCompact spaces, apartments
Under-Counter Wash BasinInstalled below the countertop for a seamless lookHotels, modern bathrooms
Corner Wash BasinDesigned to fit into a corner to save spaceSmall restrooms, compact wash areas

2. Standard Wash Basin Dimensions (As per IS Codes & Plumbing Standards)

ParameterStandard Value
Height from Floor (Countertop or Wall-Mounted Basin)800 – 850 mm
Depth of Basin400 – 600 mm
Width of Basin450 – 700 mm
Distance from Wall (for Plumbing Clearance)50 – 75 mm
Faucet Height Above Basin150 – 200 mm
Drain Pipe Diameter32 mm – 40 mm
Water Supply Pipe Diameter15 mm – 20 mm

3. Wash Basin Section & Elevation Details

a. Sectional View Details

A sectional view provides a cutaway look at the wash basin installation, showing:

✔ Basin Thickness – Typically 5-15 mm, depending on the material.
✔ Water Inlet Pipes – 15 mm cold & hot water pipes, connected to the faucet.
✔ Drain Pipe (P-Trap or Bottle Trap) – 32 mm – 40 mm outlet, connected to the floor or wall drain.
✔ Mounting Brackets (Wall-Mounted Basins) – Fixed using anchor bolts at minimum 600 mm center-to-center spacing.
✔ Countertop Edge (For Countertop Basins) – 30-40 mm thick, with a sealed hole for drainage.

b. Elevation View Details

An elevation drawing shows the front or side view of the basin installation, including:

✔ Height from Floor Level – 800 mm – 850 mm (comfortable standing height).
✔ Tap/Faucet Position – Mounted on the basin, wall, or countertop at a height of 150-200 mm above the basin rim.
✔ Waste Pipe Connection – S-trap (Floor Outlet) or P-trap (Wall Outlet), 32 mm – 40 mm diameter.
✔ Hot & Cold Water Connection – Concealed or exposed pipes running from the supply system.
✔ Mirror Placement – Usually installed 1200 – 1500 mm from the floor above the basin.

4. Plumbing & Piping Details

ComponentMaterialStandard Size
Wash Basin BodyCeramic, Porcelain, Stainless Steel, Acrylic450 – 700 mm width
Supply Pipes (Hot & Cold Water)CPVC, PPR, GI, Copper15 mm – 20 mm dia
Drain PipePVC, SS, UPVC32 mm – 40 mm dia
P-Trap / Bottle TrapPVC, Chrome-Plated Brass32 mm – 40 mm dia
Wall Brackets (For Wall-Mounted Basin)MS, SS2 nos, 10-12 mm dia bolts
Silicone Sealant (For Countertop Basin)Waterproof SiliconeUsed at basin edges to prevent leakage

5. Installation Guidelines for Wash Basin

a. Plumbing Requirements

✔ Check Water Supply & Drain Location – Install hot & cold supply pipes at 600 mm from the floor.
✔ Use Flexible Hoses – To connect faucets to supply lines easily.
✔ Seal Joints Properly – Apply Teflon tape on threaded joints to prevent leaks.
✔ Provide an Accessible Drain Trap – Install a bottle trap or P-trap for easy maintenance.

b. Mounting & Fixing

✔ Wall-Mounted Basins – Use 10-12 mm anchor bolts to secure brackets.
✔ Countertop Basins – Drill a waste hole & faucet hole properly before fixing.
✔ Pedestal Basins – Secure pedestal with screw fittings to prevent movement.

c. Ventilation & Drainage Considerations

✔ Provide Air Vent Pipes – To prevent waterlogging and slow drainage.
✔ Install Slope in Drain Pipe – Maintain a 1:50 slope to allow proper water flow.

6. Compliance with Standards & Codes

StandardDescription
IS 2065Water Supply Plumbing Code
IS 1172Sanitary Fitting Requirements
NBC (National Building Code) 2016Plumbing System Guidelines
UPC (Uniform Plumbing Code)International Plumbing Standards
ASHRAE 90.1Water Efficiency & Drainage Standards

7. Safety & Maintenance Considerations

✔ Use Anti-Slip Flooring Near Basins – To prevent accidents.
✔ Check for Leakages Periodically – Inspect pipe joints, traps, and seals.
✔ Maintain Proper Drainage Flow – Avoid clogging by using strainers.
✔ Use Corrosion-Resistant Materials – Prefer SS or brass fittings for longevity.

8. Conclusion

A well-designed wash basin system must follow proper height, clearance, plumbing connections, and mounting details to ensure durability and user comfort. Proper installation, ventilation, and maintenance will enhance the functionality and longevity of the wash basin setup.

👉 Need CAD drawings or an installation guide? Let us know 🚀🔧

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