The formal data schema specification for model view definitions and exchange requirements in BIM workflows 1. The Data Schema Layer of BIM Standards ISO 29481-3 defines the formal data schema for representing the components of the BIM collaboration framework specified…

Standardised determination of carbon, hydrogen, nitrogen, sulphur and oxygen content in coal, coke and solid biofuels 1. The Importance of Ultimate Analysis in Fuel Characterisation ISO 29541 specifies the instrumental methods for determining the carbon, hydrogen, nitrogen, sulphur, and oxygen…

Standardised XRF spectrometry procedures for the determination of major and minor oxides in cement and clinker 1. XRF in the Cement Industry: Principles and Standards ISO 29581-1 specifies the X-ray fluorescence (XRF) spectrometric method for the chemical analysis of cement,…

Accelerated environmental testing for insulation dimensional performance Purpose and Scope of ISO 29472 ISO 29472:2008 specifies a method for determining the dimensional stability of thermal insulating products when exposed to specified temperature and humidity conditions — typically more severe than…

Applying GUM methodology to fire testing: measurement uncertainty principles for fire safety engineering Introduction to Measurement Uncertainty in Fire Testing ISO 29473:2010 provides a framework for evaluating and expressing measurement uncertainty in fire test methods developed by ISO/TC 92, based…

The framework for structured information exchange in BIM-based construction projects The Role of ISO 29481-1 in BIM Information Exchange ISO 29481-1:2025 specifies the methodology and format for creating Information Delivery Manuals (IDMs) — structured specifications that define exactly what information…

Quantifying surface flatness deviation in building insulation materials Scope of ISO 29468:2022 for Flatness Assessment ISO 29468:2022 specifies a method for determining the deviation from flatness of thermal insulating products. The standard applies to full-size products and quantifies the maximum…

Compressive strength and stress-at-strain testing for building insulation materials Overview of Compression Testing for Thermal Insulation ISO 29469:2022 specifies a method for determining the compression behaviour of thermal insulating products, applicable to all product types used in building construction. The…

Standardised bulk density measurement for building insulation materials Purpose and Scope of Apparent Density Determination ISO 29470:2020 specifies a method for determining the apparent density of full-size thermal insulating products. Apparent density (often referred to as bulk density) is a…

Measuring dimensional change of insulation materials at 23 °C / 50 % RH Purpose of Dimensional Stability Testing ISO 29471:2008 specifies a method for determining the dimensional stability of thermal insulating products when exposed to constant normal laboratory conditions of…

The definitive terminology standard for particulate filters, gas-phase air cleaners, and UVC devices The Role of ISO 29464 in the Air Filtration Industry ISO 29464:2024 serves as the master vocabulary reference for the entire air cleaning industry, consolidating terminology across…

Standardised linear dimension measurement for building insulation materials Scope and Principle of ISO 29465 ISO 29465:2022 specifies a straightforward yet rigorously defined method for determining the length and width of full-size thermal insulating products used in building applications. The principle…

Reference method for thickness measurement of building insulation materials Principle and Apparatus for Thickness Determination ISO 29466:2022 specifies the reference method for measuring the thickness of full-size thermal insulating products. The principle involves measuring the distance between a hard, flat…

Measuring deviation from right angle in building insulation products Understanding Squareness in Thermal Insulation ISO 29467:2008 specifies a method for determining the squareness of thermal insulating products — that is, the deviation from a true right angle between adjacent edges.…

Standard test method for determining the efficiency of flat sheet filter media for high-efficiency particulate air filters 1. Scope of ISO 29463-3: Flat Sheet Filter Media Testing ISO 29463-3:2011 specifies the test method for determining the efficiency of flat sheet…

Standard scan test method for detecting leaks in HEPA and ULPA filter elements 1. Scope of ISO 29463-4: Leak Detection by Scanning ISO 29463-4:2011 specifies the scan test method for determining leakage of high-efficiency filter elements. This is arguably the…

Comprehensive guide to MPPS-based efficiency testing for HEPA and ULPA filters Introduction to ISO 29463-5 and the MPPS Concept ISO 29463-5:2022 specifies the reference test method for determining the efficiency of high-efficiency particulate air (HEPA) and ultra-low penetration air (ULPA)…