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IS 3597:1966 is the Indian Standard (BIS) for concrete pipes - methods of test. IS 3597 outlines the standard procedures for testing precast concrete pipes, including reinforced and prestressed varieties. It defines the methodologies for the hydrostatic pressure test, three-edge bearing load test, and water absorption test to ensure pipes meet the performance standards specified in IS 458.
! During the three-edge bearing test, the load must be applied continuously and uniformly without shock to accurately determine the cracking and ultimate crushing loads.
! For the hydrostatic test, it is crucial to bleed all entrapped air from the pipe before fully pressurizing to prevent safety hazards and false pressure readings.
! Absorption test specimens must be taken from pipes that have completed their standard curing period and should ideally span the full thickness of the pipe wall.
Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.
concretereinforced concreteprestressed concrete
International Equivalents
Similar International Standards
ASTM C497-22ASTM International, USA
HighCurrent
Standard Test Methods for Concrete Pipe, Manhole Sections, or Tile
Specifies identical core test methods: three-edge bearing, hydrostatic, and absorption tests.
BS EN 1916:2002BSI / CEN, UK / Europe
MediumCurrent
Concrete pipes and fittings, unreinforced, steel fibre and reinforced
Product standard that specifies requirements and references test methods similar to those in IS 3597.
AS/NZS 4058:2007Standards Australia / Standards New Zealand
MediumCurrent
Precast concrete pipes (pressure and non-pressure)
A product specification standard that includes appendices for testing crushing strength and water absorption.
Key Differences
≠IS 3597:1966 is a brief, legacy document with less procedural detail, whereas modern standards like ASTM C497 are significantly more prescriptive regarding apparatus, calibration, and reporting.
≠For the hydrostatic test, ASTM C497 requires pre-conditioning by filling the pipe with water for 24 hours prior to the test, a step not explicitly required in IS 3597.
≠The rate of loading for the crushing test in IS 3597 is specified as an approximate target rate (2000 kg/min/m), while ASTM C497 specifies a maximum allowable rate, providing more flexibility to the testing facility.
≠The scope of ASTM C497 is broader, including test methods for manhole sections and concrete tile, whereas IS 3597 is exclusively for concrete pipes.
Key Similarities
≈Both IS 3597 and its international counterparts are fundamentally based on the same three performance tests: crushing strength, hydrostatic pressure (water tightness), and water absorption.
≈The geometric setup for the crushing strength test, known as the 'three-edge bearing test', is conceptually identical across all standards, involving two bottom supports and a single top loading point.
≈The principle of the water absorption test is the same: specimens are dried to a constant weight, immersed in water (and boiled), and then weighed again to determine the percentage of water absorbed.
≈The hydrostatic test in all compared standards follows the same basic procedure of sealing the pipe ends, filling it with water, applying a specified internal pressure for a set duration, and observing for leaks.
Parameter Comparison
Parameter
IS Value
International
Source
Crushing Test - Lower Bearing Spacing
2.5 cm per 30 cm of internal diameter (min 2.5 cm)
1 in. per ft. of specified diameter (min 1 in.)
ASTM C497-22
Absorption Test - Drying Temperature
100°C to 110°C
110°C to 120°C (230°F to 248°F)
ASTM C497-22
Absorption Test - Boiling Duration
At least 5 hours
5 hours
ASTM C497-22
Crushing Test - Loading Rate
Approx. 2000 kg/min per metre length
Not to exceed 7500 lbf/linear ft·min (approx. 11,135 kg/min per metre length)
ASTM C497-22
Hydrostatic Test Pressure (Typical Non-Reinforced)
0.7 kg/cm² (7 m head of water)
10 psi (approx. 0.7 kg/cm²)
ASTM C14 (Product standard referencing C497 test method)
Absorption Test - Specimen Surface Area
25 to 40 sq cm
Minimum 58 sq cm (9 sq in.)
ASTM C497-22
⚠ Verify details from original standards before use
Key Values4
Quick Reference Values
absorption drying temperature105°C to 115°C
absorption boiling duration5 hours
weighing accuracy absorption0.1 percent of test piece mass
load measurement accuracy± 2 percent
Key Formulas
Water Absorption (%) = [(B - A) / A] x 100, where A = mass of oven-dried specimen, B = mass of boiled and cooled specimen
What is the purpose of the three-edge bearing test?+
It determines the structural load-bearing capacity of the concrete pipe, specifically measuring the load at which a 0.25 mm crack appears and the ultimate crushing load.
How is the water absorption test conducted?+
A specimen is dried to a constant mass at 105-115°C, weighed, and then boiled in water for 5 hours. It is cooled, surface-dried, and weighed again to find the percentage increase in mass.
What dictates the acceptance limits for these tests?+
The acceptance criteria, such as required crushing load limits and maximum allowable water absorption percentage, are specified in the product code IS 458.