EN 772-1:2011/FprA1

Methods of test for masonry units - Part 1: Determination of compressive strength

This European Standard specifies a method for determining the compressive strength of masonry units.

Prüfverfahren für Mauersteine - Teil 1: Bestimmung der Druckfestigkeit

Méthodes d'essai des éléments de maçonnerie - Partie 1: Détermination de la résistance à la compression

Metode preskušanja zidakov - 1. del: Določevanje tlačne trdnosti

General Information

• Status: Not Published
• ICS: 91.100.25 - Terracotta building products
• Technical Committee: CEN/TC 125 - Masonry
• Drafting Committee: CEN/TC 125/WG 4 - Test methods
• Current Stage: 5060 - Closure of Vote - Formal Approval
• Start Date: 13-Apr-2015
• Due Date: 06-Jun-2015
• Completion Date: 13-Apr-2015
• Ref Project: SIST EN 772-1:2011/kFprA1:2015 - Methods of test for masonry units - Part 1: Determination of compressive strength

Relations

• Merged Into: EN 772-1:2011+A1:2015 - Methods of test for masonry units - Part 1: Determination of compressive strength
• Effective Date: 29-Apr-2015
• Amends: EN 772-1:2011 - Methods of test for masonry units - Part 1: Determination of compressive strength
• Effective Date: 02-Oct-2013

Overview

EN 772-1:2011/FprA1 is a CEN draft amendment to the European standard that specifies the method for determining the compressive strength of masonry units. Prepared by CEN/TC 125 (Masonry) and published in English, French and German, the amendment clarifies surface preparation and conditioning requirements referenced in the original EN 772-1:2011.

This document is distributed for unique acceptance and review; if approved, it will be incorporated into national standards in accordance with CEN/CENELEC procedures. The scope remains focused on reliable assessment of masonry unit compressive strength and procedural consistency across testing laboratories and manufacturers.

Key Topics

• Scope: Defines the purpose - a method to determine compressive strength of masonry units for quality assessment and design input.
• Amendment content: Modifies Table B.1 to specify surface preparation and conditioning routes for different masonry unit types (e.g., clay, calcium silicate, aggregate concrete, autoclaved aerated concrete, manufactured stone, natural stone).
• References: Cross-references product specification standards EN 771-1 to EN 771-6 for masonry unit categories and links surface preparation/conditioning clauses (e.g., 7.2.4, 7.3.2, 7.3.3a/b, 7.3.4, 7.3.5).
• Administrative details: Draft amendment prepared by CEN/TC 125, subject to the Unique Acceptance Procedure and national adoption rules.

Applications

This standard and its amendment are directly applicable to:

• Testing laboratories conducting compressive strength tests on masonry units for certification and product declarations.
• Manufacturers and suppliers ensuring units meet declared compressive strength and product specifications.
• Design engineers and specifiers who use verified compressive strength values for structural and non-structural masonry design.
• Quality control teams implementing consistent test and conditioning procedures to reduce variability between batches and sites.

Key practical benefits include improved comparability of test results, clearer conditioning requirements by unit type, and alignment with EN 771 product standards for coherent compliance workflows.

Related Standards

• EN 772 series (methods of test for masonry units) - EN 772-1 is Part 1 addressing compressive strength.
• EN 771-1 to EN 771-6 - product specifications referenced in Table B.1 for clay, calcium silicate, aggregate concrete, autoclaved aerated concrete, manufactured and natural stone units.
• Other CEN/CENELEC internal regulations governing amendment adoption and national implementation.

For practitioners, this amendment reinforces standardized surface preparation and conditioning procedures to support reproducible compressive strength measurement and consistent regulatory compliance across Europe.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2015
0HWRGHSUHVNXãDQMD]LGDNRYGHO'RORþHYDQMHWODþQHWUGQRVWL
Methods of test for masonry units - Part 1: Determination of compressive strength
Prüfverfahren für Mauersteine - Teil 1: Bestimmung der Druckfestigkeit
Méthodes d'essai des éléments de maçonnerie - Partie 1: Détermination de la résistance
à la compression
Ta slovenski standard je istoveten z: EN 772-1:2011/FprA1
ICS:
91.100.15 Mineralni materiali in izdelki Mineral materials and
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
FINAL DRAFT
EN 772-1:2011
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
November 2014
ICS 91.100.25
English Version
Methods of test for masonry units - Part 1: Determination of
compressive strength
Méthodes d'essai des éléments de maçonnerie - Partie 1: Prüfverfahren für Mauersteine - Teil 1: Bestimmung der
Détermination de la résistance à la compression Druckfestigkeit
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 125.
This draft amendment A1, if approved, will modify the European Standard EN 772-1:2011. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other language made
by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has
the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slo
...