Bs En 7721 Pdf [2021] Info

To get an accurate reading, the load must be applied evenly. Since bricks often have uneven surfaces, the standard details methods for "capping"—applying a layer of gypsum plaster or mortar to create a flat surface—or grinding the faces flat.

Normalized Strength (fb)=Tested Strength×d×Moisture FactorNormalized Strength open paren f sub b close paren equals Tested Strength cross d cross Moisture Factor Reporting Test Results

| | What It Specifies | | --- | --- | | Scope | Defines which drainage channels and slot top surfaces are covered (e.g., for pedestrian and vehicular areas). | | Normative References | Lists other standards (e.g., EN 124, ISO 9001) that must be used alongside BS EN 7721. | | Load Classes | Class 15 (15 kN) to Class 90 (90 kN) – matching typical EN 124 categories. | | Design Requirements | Minimum slot gap width, maximum slot length, and requirements for heel-proof designs. | | Testing Methods | How to perform a load test (using a steel plate and hydraulic press) and corrosion test (240-hour salt spray minimum). | | Marking | All products must be permanently marked with load class, manufacturer logo, and standard number. | | Declaration of Performance (DoP) | Mandatory under CPR – the PDF includes templates for manufacturers. | bs en 7721 pdf

Soaking the units for a fixed period before crushing.

BS EN 772-1:2011+A1:2015 establishes the European and British standard for determining the compressive strength of masonry units, including clay, concrete, and stone. It details procedures for conditioning, loading, and calculating normalized strength ( To get an accurate reading, the load must be applied evenly

Always ensure you are using the latest version, including any active amendments, to ensure compliance with the most recent standards.

Because the height-to-width ratio affects recorded strength, "shape factors" from Annex A are applied to the raw data. | | Normative References | Lists other standards (e

The standard applies to various types of masonry units (clay, concrete, natural stone, etc.).

Searching for the usually indicates a need to verify:

It defines how to prepare, condition, and load masonry units.

To access the actual text of BS EN 772-1, you can try the following: