GOST 31251-2008 PDF

Full title and description

GOST 31251-2008 — "Стены наружные с внешней стороны. Метод испытаний на пожарную опасность" (English title commonly rendered as "Facades / Outside walls of buildings. Test method for fire hazard"). The standard specifies a standardized method for conducting full-scale and representative tests to assess the fire-hazard characteristics of external wall and façade constructions and cladding systems.

Abstract

This standard establishes procedures for preparing specimens, mounting façade/outer-wall assemblies, applying ignition sources and measuring fire behavior parameters required to evaluate fire hazard of external walls (including ventilated façades and composite cladding systems). Results are used to determine fire-hazard characteristics and to support classification, product qualification and regulatory compliance.

General information

• Status: Active / In force.
• Publication date: Designation year 2008 (GOST 31251-2008); published / implemented by publishers in 2010 (commonly listed as 1 March 2010).
• Publisher: Interstate (regional) standards body / GOST system (Interstate Council for Standardization, Metrology and Certification — EASC) with national registration and distribution via national standards bodies and Rosstandart-related channels.
• ICS / categories: Construction materials and building — structures of buildings (classification shown as 91.080.01).
• Edition / version: GOST 31251-2008 (current edition originating 2008).
• Number of pages: Typically published as ~26 pages (vendor copies list between 26–28 pages).

Scope

Applies to external walls and façade systems of buildings and provides a standardized test method to determine fire-hazard behavior (flame spread, burning characteristics, heat release indicators and other performance metrics measured during the test). Intended for use where assessment of façade fire performance is required for design validation, product acceptance, certification or to satisfy national fire-safety regulation. The standard is commonly referenced when testing ventilated façades and new cladding assemblies that have not previously been fire-tested.

Key topics and requirements

• Definition of test specimen geometry, construction and representative mounting conditions for external-wall and façade assemblies.
• Required test rig setup, instrumentation and calibration procedures to ensure reproducible measurements (temperature, mass loss, flame spread observations and other fire indicators).
• Specified ignition sources and test sequences to produce comparable fire exposures across tests.
• Data collection, evaluation criteria and calculation methods for derived fire-hazard parameters.
• Acceptance criteria and the way test results are translated into fire-hazard assessment / classification for façades.
• Documentation and reporting requirements, including required annexes and calibration records for test installations.

Typical use and users

Used by product manufacturers (cladding, insulation, decorative panels), accredited fire-testing laboratories, certification bodies, building designers, fire-safety engineers and regulatory authorities to assess and document the fire performance of external walls and façade systems before approval, installation or market placement. It is also referenced when national fire‑safety regulation requires demonstration of façade fire behavior.

Related standards

References and related documents include earlier edition GOST 31251-2003 (which this edition replaces), multiple fire‑safety GOSTs cited within the text (for example GOST 12.1.004-91, GOST 12.1.005-88, GOST 12.1.019-79, GOST 12.1.033-81) and other national technical regulations and building codes governing fire safety and classification. International test methods and classification systems (for example those used in European practice) are conceptually related but not identical; users should verify equivalence before substituting test results between regimes.

Keywords

facades, external walls, fire hazard, fire testing, façade systems, ventilated façade, cladding, fire performance, test method, GOST 31251-2008

FAQ

Q: What is this standard?

A: GOST 31251-2008 is a Russian/Interstate standard that specifies a test method for assessing the fire‑hazard characteristics of external walls and building façades.

Q: What does it cover?

A: It covers specimen preparation and mounting, test rig and instrumentation requirements, ignition procedures, measurement and data-evaluation methods, reporting formats and how measured results are used to determine fire‑hazard characteristics of façades and external-wall assemblies. It is commonly applied to ventilated façades and composite cladding systems.

Q: Who typically uses it?

A: Manufacturers of façade and cladding products, accredited fire-testing laboratories, certification bodies, architects, fire-safety engineers and building regulators use the standard to validate fire performance and to support product approval and compliance.

Q: Is it current or superseded?

A: GOST 31251-2008 is the 2008-designation edition and is generally listed as the active edition in vendor and national catalogs; it replaced the earlier GOST 31251-2003 edition. Users should check the national standards registry for any amendments or newer revisions before applying the standard.

Q: Is it part of a series?

A: The standard sits among other construction and fire‑safety GOSTs and refers to related occupational and fire-safety standards. While not a numbered "series" in the way some international standards are grouped, it is part of the body of GOST documents addressing building structures and fire safety and cross‑references multiple GOST documents.

Q: What are the key keywords?

A: Facades, external walls, fire hazard, fire testing, cladding, ventilated façade, ignition source, fire performance, GOST 31251-2008.