IS 10418:2019 is the Indian Standard (BIS) for upvc pipes for soil and waste discharge inside buildings. IS 10418 covers UPVC SWR (Soil, Waste, Rainwater) pipes for building drainage — the standard plastic drainage pipe used inside Indian buildings. Type A (heavy duty) for soil stacks and multi-storey. Type B (light duty) for waste and single storey. 110mm is the standard soil pipe size.
Specification for unplasticized PVC pipes and fittings for soil and waste discharge (drainage) inside buildings.
Overview
Status Current
Usage level Frequently Used
Domain Water Resources — Drainage, Sewerage and Sanitary Fittings
Type Specification International equivalents
Also on InfraLens for IS 10418
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! 110mm Type A is the standard soil pipe for WC connections in multi-storey buildings.
! Type A (heavy duty) for soil stacks (carrying WC discharge) and multi-storey buildings.
! Type B (light duty) for waste stacks (basin, kitchen), rainwater, and single storey drainage.
! UPVC drainage pipes should NOT be exposed to sunlight — UV degrades PVC. Cover or paint exposed sections.
! Maximum hot water temperature 60°C — do not discharge boiling water directly into UPVC pipes.
Frequently referenced clauses
Cl. 4 — Types: Type A (heavy duty), Type B (light duty)
Cl. 5 — Sizes: 75mm, 110mm, 160mm
Cl. 6 — Material requirements — UPVC compound
Cl. 7 — Pressure and ring stiffness
Cl. 8 — Jointing — solvent cement and rubber ring
UPVC pipe drainage pipe soil pipe waste pipe SWR pipe building drainage
International Equivalents Similar International Standards
ASTM D2665 ASTM International (US)
High Current
Standard Specification for PVC Drain, Waste, and Vent Pipe and Fittings
Both cover PVC drainage pipes for building use.
BS EN 1329-1:2014 CEN (EU)
High Current
Plastics piping systems for soil and waste discharge inside buildings — PVC-U
Both cover UPVC pipes for building drainage with similar type classification.
Key Differences
≠ IS uses metric DN (75, 110, 160mm). US uses inch-based (3", 4", 6").
Key Similarities
≈ All three specify UPVC (unplasticized PVC) for building drainage applications.
Parameter Comparison
Parameter IS Value International Source
⚠ Verify details from original standards before use Report Error
Key Values4 Quick Reference Values
Standard soil pipe 110mm Type A
Standard waste pipe 75mm Type B
Standard rainwater 75mm or 110mm
Max operating temp 60°C
Tables & Referenced Sections Key Tables
Table 1 — Pipe dimensions and tolerances
Table 2 — Physical requirements
Frequently Asked Questions2 What size pipe for toilet drainage? + 110mm Type A per IS 10418 for individual WC connections and soil stacks. 160mm for main building drains collecting multiple stacks.
Type A or Type B? + Type A (heavy duty): soil stacks (WC), multi-storey buildings, main drains. Type B (light duty): waste from basins/kitchens, rainwater, single storey.
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