However, in a fastener or engineering design context, it could refer to . Once the correct standard is identified, obtaining the official PDF from an authorized distributor like the BSI is the final step in ensuring you have the authoritative document required for your professional work.
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:
For the technical user, this standard is notable for its handling of . Unlike older British Standards (which often used strict mortar capping), BS EN 772-1 permits methods that align with European practice. The choice of capping material can significantly influence the final strength result; the standard provides correction factors to account for the stiffness of the capping material relative to the masonry unit.
) based on the width and height of the unit. Multiplying the tested strength by this shape factor converts the value into the equivalent strength of a globally benchmarked bs en 7721 pdf
The compressive strength of the assembled components (masonry units, mortar, and grout) must meet or surpass the stipulated strength to provide a safe building that can withstand anticipated service loads. The standard navigates users through the specifications of masonry units to determine if they are fit for their intended purpose. By complying with BS EN 772-1, manufacturers can demonstrate the quality, performance, and reliability of their products, thereby achieving the required structural integrity for construction works.
This standard, "Countersunk flat head screws — Penetration depth of cross recesses," is part of the fastener sector. It specifies the required penetration depth for cross recesses (like Phillips or Pozidriv) in countersunk flat head screws for two series: Series 1 (deep) and Series 2 (shallow). This ensures that screwdrivers and bits are correctly sized to engage with the screw head properly, preventing cam-out (slipping) and damage to the screw or workpiece. The standard was originally published in January 1995 and remains a current standard.
| Standard | BSI Knowledge (Official BSI site) | Intertek Inform | NSAI (Standards.ie) | | :--- | :--- | :--- | :--- | | | Purchase | Purchase | Purchase | | BS EN 772-21:2011 | Purchase | Purchase | [Not found in search, but likely available] | However, in a fastener or engineering design context,
The official document is available through the shop.
: Covers various units including clay, aggregate concrete, autoclaved aerated concrete (AAC), and manufactured stone. iTeh Standards Key Technical Requirements 1. Sampling and Specimens Sample Size : A minimum of six specimens
If you need help interpreting specific sections of the standard or comparing it with older, withdrawn versions, Share public link In the UK, the Health and Safety Executive
Complete Guide to BS EN 772-1: Compressive Strength Testing of Masonry Units
Soaking the units for a fixed period before crushing.
: Several regimes exist depending on unit type: air-dry (at least 14 days), oven-dry (at 70°C or 105°C), or immersion. iTeh Standards 2. Testing Apparatus BS EN 772-1:2011+A1:2015 - BSI Knowledge
The standard is the essential industry benchmark for determining the compressive strength of masonry units . Whether it’s clay bricks or concrete blocks, this protocol ensures that building materials can withstand the specific loads they'll face in structural walls and partitions. Core Testing Objectives
BS EN 772-1 standard, titled "Methods of test for masonry units – Part 1: Determination of compressive strength"