Similar International Standards
BS 1194:1969British Standards Institution (BSI), UK
HighWithdrawn
Specification for concrete porous pipes for under-drainage
Directly covers concrete porous pipes specifically for under-drainage, mirroring the core scope and terminology of IS 4350.
ASTM C412/C412M-21American Society for Testing and Materials (ASTM), USA
HighCurrent
Standard Specification for Concrete Drain Tile
Specifies requirements for concrete drain tile used for subsurface drainage, serving the same functional purpose for under-drainage, relying on water passage through the pipe wall, although not explicitly termed 'porous concrete'.
ASTM C444/C444M-18American Society for Testing and Materials (ASTM), USA
MediumCurrent
Standard Specification for Perforated Concrete Pipe
Covers nonreinforced concrete pipes with perforations for collecting and conveying drainage water, addressing the same application as porous pipes but through a different mechanism (discrete holes vs. inherent material porosity).
BS 5911-200:2006British Standards Institution (BSI), UK
MediumCurrent
Concrete pipes and ancillary products. Specification for perforated concrete pipes and fittings
Though focusing on perforated pipes, this standard superseded BS 1194 for drainage applications, thus representing a modern equivalent for the under-drainage function in the UK context.
Key Differences
≠IS 4350 specifically defines 'porous' concrete pipes and includes a 'hydraulic permeability test' to measure the flow rate of water through the pipe wall. Many international standards, particularly modern ones for concrete drainage, often focus on 'perforated' pipes with specific hole patterns (e.g., ASTM C444, BS 5911-200) or rely on water absorption limits for the concrete material rather than a direct wall permeability test (e.g., ASTM C412).
≠The classification of pipes based on crushing strength differs. IS 4350 uses 'Light Duty,' 'Medium Duty,' and 'Heavy Duty' classes with corresponding crushing loads (e.g., kN/m). ASTM C412 uses 'Standard Quality' and 'Extra-Quality' based on D-load (lbf/linear ft per inch of diameter) and absorption requirements.
≠While all standards specify nominal internal diameters, the exact range and preferred increments can vary due to regional practices (e.g., metric vs. imperial units, common manufacturing sizes). IS 4350 focuses on 100mm to 300mm, whereas ASTM C412 covers a wider range up to 24 inches (approx. 600mm).
≠IS 4350 specifies a maximum water absorption for concrete of 8% by mass. ASTM C412, while also having absorption limits, typically specifies a slightly higher maximum of 9% for 'Standard Quality' drain tile, with 'Extra-Quality' at 8%.
Key Similarities
≈All standards are fundamentally intended for under-drainage applications, facilitating the collection and conveyance of water from the surrounding soil in agricultural, highway, and general subsurface drainage systems.
≈The primary material specified across these standards is non-reinforced concrete, typically made from Portland cement and suitable aggregates, ensuring durability and structural integrity for underground installation.
≈A three-edge bearing test is consistently specified in IS 4350 and its international counterparts (e.g., ASTM C412, BS 1194) as the standard method for determining the crushing strength and structural capacity of the pipes.
≈All standards include general requirements for quality of workmanship, dimensions, tolerances, and freedom from defects, along with provisions for marking to identify the manufacturer and pipe class/type.
≈Despite differences in porosity vs. perforations, all covered pipes are designed to allow water ingress into the pipe lumen from the surrounding soil, either through the pipe wall's inherent properties or through specific openings, ensuring effective drainage.