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IS 15005:2022 is the Indian Standard (BIS) for strip seal expansion joints for bridges - specification. 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.
Overview
Status
Current
Usage level
Frequently Used
Domain
Structural Engineering — Bridges and Bridge Engineering
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
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.
EAD 120109-00-0107:2018EOTA (European Organisation for Technical Assessment), Europe
HighCurrent
Strip Seal Expansion Joints for Road Bridges
Directly covers material, manufacturing, testing, and performance requirements for strip seal expansion joints.
AASHTO LRFD Bridge Construction Specifications, 4th Edition, 2017AASHTO (American Association of State Highway and Transportation Officials), USA
MediumCurrent
AASHTO LRFD Bridge Construction Specifications
Section 14 covers bridge joints, but material specifics are often in separate codes like AASHTO M 297 for the seal.
DMRB CD 357 (Revision 1):2020National Highways, UK
MediumCurrent
Bridge expansion joints
Covers design, specification, and installation of all bridge joints, including strip seals, within the UK framework.
ETAG 032, Part 1:2013EOTA (European Organisation for Technical Assessment), Europe
HighWithdrawn
Guideline for European Technical Approval of Expansion Joints for Road Bridges, Part 1: General
The foundational document that EAD 120109 is based on, defining the performance philosophy for all joint types.
Key Differences
≠The water tightness test in IS 15005 requires holding a 50 mm water head for 24 hours, whereas the European EAD 120109 specifies a 100 mm water head for 2 hours. This indicates a different test philosophy (longer duration at lower pressure vs. shorter duration at higher pressure).
≠IS 15005 specifies a single fatigue test regime (e.g., 100,000 cycles for the seal). The European approach (EAD/ETAG) is more performance-based, where testing (e.g., cycles, movement range) is tailored to the manufacturer's declared performance characteristics.
≠Anchorage design in IS 15005 references Indian steel codes (IS 800, IS 2062). International equivalents reference their own national/regional standards (e.g., Eurocode 3 for EADs, AASHTO LRFD steel design for US practice), leading to differences in fatigue calculations, material grades, and welding specifications.
≠IS 15005:2022 explicitly includes requirements for both 'Single Strip' and 'Multiple Strip' (or Box-Seal) joints within one document, while international standards may address these more complex modular joints in separate documents or parts.
Key Similarities
≈All standards define a strip seal joint by its core components: steel edge profiles/rails, an elastomeric sealing element, and a mechanical anchorage system connecting the joint to the bridge deck.
≈A primary functional requirement across all standards is watertightness. The joint must prevent the passage of water and de-icing salts to protect the underlying bridge superstructure and substructure.
≈Polychloroprene (Neoprene) is universally specified or accepted as the primary material for the elastomeric sealing element due to its proven durability, UV resistance, and chemical resistance. EPDM is also a common alternative.
≈All standards require the joint system to accommodate multi-directional structural movements (longitudinal, transverse, vertical, and rotation) without sustaining damage or compromising performance.
Parameter Comparison
Parameter
IS Value
International
Source
Elastomeric Seal Tensile Strength (min)
13 MPa
13.8 MPa (2000 psi)
AASHTO M 297
Elastomeric Seal Elongation at Break (min)
250%
250%
AASHTO M 297
Elastomeric Seal Hardness
60 ± 5 Shore A
60 ± 5 Shore A
AASHTO M 297
Water Tightness Test Head
50 mm for 24 hours
100 mm for 2 hours
EAD 120109-00-0107
Steel Grade for Edge Profiles
S275 / S355 (as per IS 2062)
S235 / S275 / S355 (as per EN 10025)
EAD 120109-00-0107
Ozone Resistance Test (Neoprene Seal)
No cracks at 7x magnification after 100h @ 40°C, 50 pphm
No cracks at 7x magnification after 100h @ 40°C, 100 pphm
AASHTO M 297
Fatigue Test Cycles (Steel Components)
2 x 10^6 cycles
Varies; often based on declared use category and fatigue detail (e.g., per Eurocode 3)
EAD 120109-00-0107
⚠ Verify details from original standards before use
Key Values6
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
Tables & Referenced Sections
Key Tables
Table 1 - Physical Properties of Elastomer for Sealing Element
Table 2 - Steel Grade Requirements
Table 3 - Anchorage Details
Table 4 - Test Requirements for Assembled Joint
Key Clauses
Clause 4 - Materials
Clause 5 - Geometrical and Functional Requirements