SIST EN 991:2001

• Abstract:

  This European standard specifies a method of determining the essential dimensions and of verification of squareness of prefabricated reinforced components made of autoclaved aerated (ACC) or lightweight aggregate concrete with open structure according to prEN 1520.

• Status: Published
• Publication Date: 31-Mar-2001
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: BBB - Concrete, reinforced concrete and prestressed concrete
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2001
• Due Date: 01-Apr-2001
• Completion Date: 01-Apr-2001
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive:

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  89/106/EEC - Construction products
• Ref Project: EN 991:1995 - Determination of the dimension of prefabricated reinforced components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure

• Referred By: SIST EN 1520:2011 - Prefabricated reinforced components of lightweight aggregate concrete with open structure
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12602:2008 - Prefabricated reinforced components of autoclaved aerated concrete
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 1740:2001 - Performance test for prefabricated reinforced components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure under predominantly longitudinal load (vertical components)
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12602:2017 - Prefabricated reinforced components of autoclaved aerated concrete
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12602:2008+A1:2013 - Prefabricated reinforced components of autoclaved aerated concrete
• Effective Date: 28-Jan-2026

Overview

SIST EN 991:2001 is a European standard published by CEN that outlines methods for determining the dimensions and verifying the squareness of prefabricated reinforced components made from autoclaved aerated concrete (AAC) or lightweight aggregate concrete (with open structure). This standard is closely related to prEN 1520, which addresses broader requirements for such prefabricated components in the construction sector.

SIST EN 991:2001 aims to ensure consistent quality, precision, and interoperability of prefabricated concrete elements used in various building applications. Accurate determination of dimensions and squareness is essential for safe installation, structural integrity, and compliance with structural design specifications.

Key Topics

• Dimension Measurement: The standard specifies procedures for determining key dimensions, such as length, width, and thickness of prefabricated reinforced concrete components.
• Verification of Squareness: SIST EN 991:2001 provides a method to assess and verify the squareness of the elements, ensuring that all angles meet specified tolerances for effective assembly.
• Applicability: The methods apply to components manufactured from both autoclaved aerated concrete (AAC) and lightweight aggregate concrete, provided they have an open structure as defined in related standards.

Applications

SIST EN 991:2001 is particularly valuable for industries and organizations involved in:

• Manufacturing Prefabricated Concrete Components: Ensures products meet precise dimensional requirements and are ready for on-site assembly.
• Quality Control: Supports the assessment and verification of manufactured reinforced concrete parts before delivery and installation.
• Construction and Civil Engineering Projects: Used during the design and execution phases to guarantee component compatibility and structural reliability in residential, commercial, and industrial buildings.
• Compliance Audits: Assists in demonstrating conformity with European construction product standards, reducing risks related to installation errors and structural defects.

By implementing SIST EN 991:2001, manufacturers and contractors can achieve higher product reliability, reduced installation time, and enhanced building safety.

Related Standards

For a comprehensive approach to the design, manufacturing, and application of prefabricated reinforced concrete components, consider the following related European standards:

• prEN 1520: Covers wider requirements for reinforced components made from AAC or lightweight aggregate concrete with open structure.
• EN 206: Specifies requirements for concrete and concrete production.
• EN 13369: Addresses common rules for precast concrete products.
• EN 1992 (Eurocode 2): Provides the design framework for concrete structures, including those using prefabricated elements.

Aligning with SIST EN 991:2001 and related standards helps ensure compliance with European regulations, improves product quality, and facilitates smooth integration of prefabricated components in modern construction processes.

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Keywords: SIST EN 991:2001, prefabricated reinforced components, autoclaved aerated concrete, lightweight aggregate concrete, dimension determination, squareness verification, CEN standard, construction quality, concrete products, European standards

SLOVENSKI STANDARD
01-april-2001
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Determination of the dimension of prefabricated reinforced components made of
autoclaved aerated concrete or lightweight aggregate concrete with open structure
Bestimmung der Maße vorgefertigter bewehrter Bauteile aus dampfgehärtetem
Porenbeton oder haufwerksporigem Leichtbeton
Détermination des dimensions de composants préfabriqués armés en béton cellulaire
autoclavé ou en béton de granulats légers a structure ouverte
Ta slovenski standard je istoveten z: EN
...