Qualification of Post-Installed Mechanical Anchors (Part 1)-Qualification of Post-Installed Mechanical Anchors (Part 1) (PDF)

Qualification of Post-Installed Mechanical Anchors (Part 1) (PDF)

Pdf Summary

The document "ACI 355.2-07: Qualification of Post-Installed Mechanical Anchors in Concrete and Commentary" is a technical standard established by the American Concrete Institute (ACI) to guide the testing and evaluation of mechanical anchors installed after concrete has cured. It details a comprehensive framework for determining if these anchors are suitable for use in both cracked and uncracked concrete, and establishes performance categories used in design to assign reduction factors and other parameters.

Key sections of the document outline the scope of testing required for anchor qualification, including:

1. <strong>Scope (Chapter 1):</strong> This chapter specifies the document's applicability to post-installed mechanical anchors that meet certain size and material specifications and are intended for use under ACI 318 design provisions.

2. <strong>Definitions and Notation (Chapter 2):</strong> Essential terminology and symbols used within the document are defined to ensure clarity and consistency across its application.

3. <strong>Significance and Use (Chapter 3):</strong> This section explains the importance of qualifying anchors for static or seismic load capacity in structural concrete applications, noting exceptions such as compression-loaded expansion anchors.

4. <strong>General Requirements (Chapter 4):</strong> The document details a four-phase testing sequence composed of identification, reference tests, reliability tests, and service-condition tests. This sequence aims to verify an anchor's performance under varying conditions, including adverse installations.

5. <strong>Testing Procedures (Chapters 5-9):</strong> These chapters outline specific requirements for concrete properties, anchor installation, and test setup. They describe how anchors should be set and tested in both cracked and uncracked concrete, using detailed methodologies for test execution and data analysis.

The document emphasizes verification of anchor identity and manufacturing standards, including quality control under ISO 9000 or equivalent systems. Additionally, entities performing testing must comply with detailed procedural standards to ensure data integrity. Each section specifies tests, sample sizes, and conditions, such as mixed concrete strengths and member thickness, to verify that anchors consistently meet performance criteria across a range of expected use cases and conditions.

This standard ensures that post-installed mechanical anchors achieve reliable performance in structural applications and provides a systematic approach to evaluation, aiming to enhance safety and uniformity in construction practices.

Keywords

ACI 355.2-07

mechanical anchors

post-installed

concrete

testing framework

cracked and uncracked concrete

anchor qualification

performance categories

ISO 9000

structural applications