What is the required hardness for the elastomeric sealing element?

70 ± 5 on the Shore A scale, as per Table 1.

What grade of steel should be used for the edge beams?

Minimum Grade E250 Quality B0 as per IS 2062, or higher grades if specified (Clause 4.1.1).

What is the water tightness test requirement?

The joint must remain watertight when subjected to a pressure of 0.5 bar (equivalent to a 5 m head of water) for a period of 4 hours (Clause 6.2).

What is the movement range that must be tested for fatigue?

The joint must endure 2 million cycles of movement corresponding to 50 percent of its rated movement capacity (Clause 6.3).

IS 15005

: 2022

Strip Seal Expansion Joints for Bridges - Specification

CurrentFrequently UsedSpecificationBIMStructural Engineering · Bridges and Bridge Engineering

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This standard specifies the material, design, manufacturing, testing, and installation requirements for prefabricated strip seal expansion joints used in road bridges. It covers the elastomeric sealing element, steel edge beams, and anchorage system to ensure durability and performance under traffic and environmental loads.

Specifies material, design, manufacturing, testing, and acceptance requirements for strip seal expansion joints used in bridges.

Quick Reference Values

Elastomer hardness70 ± 5 Shore A

Elastomer minimum tensile strength13 MPa

Elastomer minimum elongation at break250 %

Steel grade for edge beamsE250 B0 or higher (as per IS 2062)

Water tightness test pressure0.5 bar (5 m water head)

Fatigue test cycles2 x 10^6 cycles

Practical Notes

Crucial to set the installation gap based on the ambient temperature at the time of installation to accommodate thermal movements correctly. Refer to the manufacturer's setting chart.

Ensure complete watertightness, as leakage through the joint is a primary cause of deterioration of the underlying bridge bearings and pier caps.

Verify that the material test certificates for both the steel and the elastomer comply with the requirements of Table 1 and Table 2 before accepting the material on site.