Similar International Standards
AWWA C301-20American Water Works Association (AWWA), USA
HighCurrent
Prestressed Concrete Pressure Pipe, Steel-Cylinder Type
Covers steel-cylinder type prestressed concrete pipes, which is one of the two types covered by IS 784.
AWWA C304-14American Water Works Association (AWWA), USA
HighCurrent
Design of Prestressed Concrete Cylinder Pipe
Provides detailed design procedures specifically for prestressed concrete cylinder pipes, complementing AWWA C301.
AS/NZS 4058:2007Standards Australia / Standards New Zealand, Australia/New Zealand
MediumCurrent
Precast concrete pipes (pressure and non-pressure)
Covers a broader range of precast concrete pipes, but includes a section on prestressed pipes for pressure applications.
BS EN 641:1994British Standards Institution (BSI), UK / European Committee for Standardization (CEN), Europe
MediumWithdrawn
Sewerage systems. Prestressed concrete pipes and ancillary fittings.
Specified requirements for prestressed concrete pipes used in sewerage systems, overlapping in manufacturing and testing principles.
Key Differences
≠IS 784 covers both steel-cylinder and non-cylinder type prestressed pipes in a single standard, whereas AWWA separates standards by type (e.g., AWWA C301 for cylinder type) and design (AWWA C304).
≠The hydrostatic field test pressure in IS 784 is specified as the working pressure of the pipe. In contrast, AWWA standards typically require a higher test pressure, often 125% of the working pressure, to provide a greater safety margin during commissioning.
≠Pipe classification in IS 784 is primarily based on internal working pressure (e.g., 0.4, 0.6, 1.0 MPa). AWWA classification is more complex, based on a combination of pressure class and external load design criteria to meet specific project conditions.
≠IS 784 specifies concrete grades (e.g., M40, M50), which defines a characteristic compressive strength. AWWA C301 specifies minimum compressive strengths in psi for the core and coating separately, without using a grade system.
Key Similarities
≈All standards are based on the same fundamental principle: inducing circumferential compressive stress in a concrete core by wrapping it with high-tensile steel wire under tension to counteract tensile stresses from internal pressure.
≈All standards mandate critical performance tests, including a hydrostatic pressure test to ensure water-tightness and structural integrity, and a three-edge bearing test to verify external load capacity.
≈The use of flexible, watertight joints, typically of the spigot-and-socket type with a rubber gasket (O-ring), is a common requirement to ensure the integrity of the pipeline.
≈All standards place a strong emphasis on the quality of constituent materials, specifying requirements for cement, aggregates, water, admixtures, and high-tensile prestressing steel.