ISO 834-5-2000 PDF

Full title and description

Fire-resistance tests — Elements of building construction — Part 5: Specific requirements for loadbearing horizontal separating elements (ISO 834-5:2000). This International Standard specifies the test procedures and requirements to determine the fire resistance of loadbearing horizontal separating elements (floors, roofs and similar horizontal assemblies) when exposed to heating from the underside.

Abstract

This part of ISO 834 gives the specific test configuration, loading and acceptance criteria needed to assess the fire resistance of loadbearing horizontal separating elements using the standard time–temperature exposure. It covers specimen preparation, furnace exposure from the underside, application of load, measurement and criteria for loss of loadbearing capacity and other relevant performance indicators; it also notes how the test may be applied to assemblies containing beams and when extended application analysis (e.g. ISO/TR 12470) is required for untested forms of construction.

General information

• Status: Published / International Standard (confirmed).
• Publication date: 17 August 2000.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.220.50 — Fire‑resistance of building materials and elements.
• Edition / version: Edition 1 (2000).
• Number of pages: 9 pages (official ISO edition).

Scope

ISO 834-5:2000 applies to the determination of fire resistance of loadbearing horizontal separating elements exposed to fire from below. The scope includes floors and roofs and assemblies containing beams where representative testing of the whole assembly is impractical; it clarifies limitations on direct transfer of data between different forms of construction and refers to extended application analysis procedures for extrapolating results to untested variations.

Key topics and requirements

• Standard time–temperature exposure (ISO 834 furnace curve) and specimen exposure from the underside.
• Specimen configuration and dimensional requirements appropriate for horizontal separating elements.
• Application of sustained load and measurement of structural performance under fire (criteria for loss of loadbearing capacity, excessive deflection or collapse).
• Instrumentation and temperature measurement requirements (thermocouples, furnace control) for performance assessment.
• Guidance on testing assemblies containing beams and limitations on direct transferability of test results; recommendation to use extended application analysis (ISO/TR 12470) for other constructions.

Typical use and users

Used by fire testing laboratories, product and system manufacturers (flooring, roof systems, composite slabs), structural and fire safety engineers, building code authorities and conformity assessment bodies to demonstrate and verify the fire resistance of loadbearing horizontal separating elements for design, regulatory approval and product certification.

Related standards

ISO 834-5 is one part of the ISO 834 series covering fire‑resistance tests for building elements (other parts include requirements for vertical separating elements, beams, columns, non-loadbearing elements, etc.). National adoptions and derivatives exist (for example GB/T 9978.5 and national versions such as TCVN 9311-5), and related guidance includes ISO/TR 12470 for extended application analyses and other parts of ISO 834 addressing specific element types and applied protections.

Keywords

fire-resistance test, ISO 834, loadbearing horizontal separating element, floor fire test, roof fire test, furnace time–temperature curve, loadbearing capacity, ISO/TR 12470

FAQ

Q: What is this standard?

A: ISO 834-5:2000 is Part 5 of the ISO 834 series; it specifies the fire-resistance test procedures and requirements for loadbearing horizontal separating elements (floors, roofs and similar assemblies) exposed to fire from below.

Q: What does it cover?

A: It covers specimen configuration, furnace exposure from the underside using the standard time–temperature curve, load application, measurement/verification methods and acceptance criteria for loss of loadbearing capacity and related performance. It also describes applicability limits and points to extended application analysis where needed.

Q: Who typically uses it?

A: Fire test laboratories, manufacturers of floor/roof systems, structural and fire safety engineers, certification bodies and regulatory authorities use this standard to assess and document fire resistance.

Q: Is it current or superseded?

A: ISO 834-5 was published on 17 August 2000 and is recorded as the 2000 edition (Edition 1). According to ISO records it is published/confirmed; users should check the ISO catalogue or their national standards body for the most up‑to‑date publication status or any later amendments or replacements.

Q: Is it part of a series?

A: Yes — it is Part 5 of the ISO 834 series (Fire‑resistance tests — Elements of building construction), which includes other parts addressing vertical elements, beams, columns, non‑loadbearing elements and additional specific requirements.

Q: What are the key keywords?

A: Fire-resistance, loadbearing horizontal separating element, floor, roof, time–temperature curve, test furnace, loadbearing capacity, ISO 834.