| | 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. |
is typically required unless specific product standards dictate otherwise. Preparation : Surfaces must be plane to within 0.1 mm per 100 mm ; if they do not meet this, they must be ground or capped. Conditioning
BS EN 772-1 is part of a series of European Standards (EN) that have been adopted by the British Standards Institution (BSI), making them British Standards (BS). This particular part focuses on determining the compressive strength of masonry units, which are essential components in the construction of walls, foundations, and other structures. bs en 7721 pdf
Calibrated compression machine with a load repeatability maximum error of ~2.0%.
Using an incorrect or counterfeit to guide your project is a regulatory minefield. In the UK, the Health and Safety Executive (HSE) can issue unlimited fines or even imprisonment (under the Health and Safety at Work Act) if a drainage failure results in injury. Furthermore: | | What It Specifies | | ---
"John, we need to make sure those masonry units meet the compressive strength requirements," his boss had said. "I want you to review the test results and ensure they comply with BS EN 772-1."
Storing units in a laboratory environment until a stable mass is achieved. | | Design Requirements | Minimum slot gap
However, given that "EN" signifies a European standard and the primary search results lead to construction materials, this article will focus on the intended target for the vast majority of users: , with a specific note on the other possible search result for completeness.
is the harmonized European standard that defines the methods for determining the compressive strength of masonry units. It applies directly to foundational construction materials like clay bricks, calcium silicate blocks, aggregate concrete, autoclaved aerated concrete (AAC), and manufactured stone. Understanding the BS EN 772-1 PDF is critical for structural engineers, manufacturers, and testing laboratories to verify structural compliance and ensure materials safely handle target service loads.