What is BS EN 771-5 - Specification for masonry units about?
Masonry units covered by most standards include those made from normal and lightweight concretes, calcium silicate, natural stone, and fired clay. BS EN 771-5 specifies the characteristics and performance requirements of manufactured stone masonry units for which the main intended uses are facing or exposed masonry in load-bearing or non-load bearing building and civil engineering applications.
BS EN 771-5 does not apply to storey height panels, masonry units used for chimney flues, or units manufactured with an adhesive bonded decorative face. BS EN 771-5 does not include products intended to be used as a damp proof course nor does it specify standard sizes for manufactured stone masonry units or work dimensions and angles of specially shaped units. BS. BS EN 771-5 specifies the characteristics and performance requirements for manufactured stone masonry units available throughout the CEN member countries.
Note: BS EN 771-5 does not cover units with an incorporated thermal insulation material bonded to the faces of the unit susceptible to being exposed to fire.
Who is BS EN 771-5 - Specification for masonry units for?
BS EN 771-5 on the specification for masonry units is useful for:
- Construction companies
- Civil engineers
- Construction workers
Why should you use BS EN 771-5 - Specification for masonry units?
Masonry gives high resistance against rotting, pests, climate, and natural disasters such as hurricanes and tornadoes. The units are suitable for all forms of coursed or random masonry walling, including single leaf, cavity, partition, retaining, and the external masonry to chimneys. They can provide fire protection, thermal insulation, sound insulation, and sound absorption.
BS EN 771-5 covers concrete masonry units manufactured to resemble natural stone using casting or pressing techniques with or without textured surfaces produced, by casting, splitting, washing, blasting, or tooling and with or without variable outline effects. BS EN 771-5 covers homogeneous masonry units and those consisting of different facing and backing concrete mixes but excludes those manufactured with an adhesive bonded decorative face. This standard does not cover masonry units intended to conform to EN 771-3.
BS EN 771-5 defines the performance related to e.g., strength, density, dimensional accuracy, surface appearance and provides for the assessment and verification of constancy of performance (AVCP)" of the product to this BS EN 771-5. The marking requirements for products covered by BS EN 771-5 are also included. Using BS EN 771-5 you can specify the characteristics and performance requirements of manufactured stone masonry units for which the main intended uses are facing or exposed masonry in load-bearing or non-load bearing building and civil engineering applications.
