How is the transverse load applied during testing?

Gradually via a winch or chain pulley block, generally applied at a distance of 600 mm from the top of the pole.

What is the anchoring method during testing?

The pole is anchored rigidly from the butt end up to the specified planting depth in a crib or testing bed to simulate actual field embedment.

Are the pass/fail load requirements specified in this code?

No, IS 2905 only provides the testing methodology. The actual load limits and acceptance criteria are found in the relevant product specifications like IS 1678.

IS 2905

: 1989

Concrete poles for overhead power and telecommunication lines - Methods of test

CurrentSpecializedTesting MethodStructural Engineering · Cement Matrix Products

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This standard prescribes the testing methods for concrete poles used in overhead power and telecommunication lines, focusing on dimensional checks, transverse strength testing, and torsion tests.

Concrete poles for overhead power and telecommunication lines - Methods of test

Quick Reference Values

Deflection measurement accuracy1 mm

Overall length measurement accuracy5 mm

Transverse load point from top0.6 m (typical, unless specified otherwise)

Holding time for load stages2 to 3 minutes before taking readings

Practical Notes

Poles are typically tested horizontally on a testing bed, rigidly held from the butt end up to the designed planting depth.

Care must be taken to ensure gripping arrangements do not induce any secondary bending or localized crushing during load application.

For transverse tests, friction from the supports must be minimized by using rollers.