ISO 10295-2:2009

Overview

ISO 10295-2:2009 - Fire tests for building elements and components: Fire testing of service installations - Part 2: Linear joint (gap) seals - specifies test heating conditions, procedures and acceptance criteria to evaluate the fire integrity and thermal insulation performance of linear joint seals installed in fire-separating elements (walls, floors, ceilings). The standard is intended to assess seal performance under standard fire exposure (ISO 834-1) including the effects of induced movement for joints designed to accommodate movement. It does not quantify smoke/gas leakage rates or cover items covered by other dedicated tests (doors, ducts, pipes, cables).

Key topics and technical requirements

• Scope and purpose: Tests evaluate the ability of a linear joint seal to maintain fire integrity and insulation at the joint being sealed; movement accommodation is included for seals wider than 20 mm.
• Test heating: Uses the standard fire curve defined in ISO 834-1.
• Specimen and test construction: Supporting construction must be representative of practice and of known fire resistance. Minimum specimen length and dimensions: at least 1 m for seals ≤100 mm; maintain a 10:1 length-to-width ratio for wider seals; seals >300 mm have minimum lengths of 3 m (vertical) and 4 m (horizontal).
• Pressure and furnace: Vertical and horizontal furnace pressure requirements include a minimum positive pressure of 20 Pa at specified locations to ensure realistic exposure. Minimum furnace clearances and internal sizes are defined to avoid direct flame impingement.
• Movement cycling: For joints >20 mm designed for movement, specimens are cycled prior to testing using specified apparatus to simulate service movement.
• Splices, blockouts and orientation: Splice locations and blockouts are controlled (splices must be within the positive-pressure zone and maintain minimum distances from furnace faces and other splices). Tests may be run in both vertical and horizontal orientations where applicable.
• Instrumentation & acceptance: Temperature and deflection instrumentation and criteria for integrity and insulation are specified; test reports must include construction details, test data and observed behaviour.

Practical applications

• Product development and fire performance certification of joint seal systems used at construction joints, floor perimeters and movement joints.
• Type testing by independent laboratories to support manufacturer declarations and regulatory approvals.
• Selection and specification of joint seals by fire safety engineers, architects, contractors and procurement teams to meet building code and fire safety requirements.
• Forensic assessment and performance comparison of alternative seal materials or installation methods.

Who should use this standard

• Joint seal manufacturers and R&D teams
• Accredited fire test laboratories and certification bodies
• Fire safety engineers, architects, specifiers and code compliance officers
• Construction product assessors and building regulators

Related standards

• ISO 834-1 (fire-resistance test heating) - normative reference
• ISO 10295-1 (Part 1: Penetration seals)
• ISO 13943 (fire safety vocabulary)

Keywords: ISO 10295-2:2009, linear joint seals, fire testing, fire resistance, joint seal testing, ISO 834-1, movement cycling, fire-separating element.