
Glass in building. Glass blocks. Specification and test methods.
STANDARD published on 6.4.2022
Designation standards: BS ISO 21690:2021
Publication date standards: 6.4.2022
The number of pages: 22
Approximate weight : 66 g (0.15 lbs)
Country: British technical standard
Category: Technical standards BS
ISBN: 978 0 539 14519 9 Status: Definitive