In the UK, under the Construction Products Regulation (CPR), if you install a drainage channel that does not comply with BS EN 7721, you may be found liable in the event of structural failure or personal injury.
is the British Standard adoption of the European Norm titled “Methods of testing masonry units – Part 1: Determination of compressive strength.” bs en 7721 pdf
In conclusion, BS EN 772-1 is a widely accepted and essential standard for determining the compressive strength of masonry units. Its clear and detailed guidelines ensure consistency and accuracy in testing, which is critical for building design, quality control, and testing and certification. If you're involved in the construction industry, particularly in the manufacture, testing, or design of masonry units, this standard is a must-have. In the UK, under the Construction Products Regulation