439.5R-18: Comprehensive Guide for the Specification, Manufacture and Construction Use of Welded Wire Reinforcement

439.5R-18: Comprehensive Guide for the Specification, Manufacture and Construction Use of Welded Wire Reinforcement

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Description

Welded wire reinforcement (WWR) is prefabricated reinforcement consisting of high-strength cold-worked steel wires that are resistance-welded together in square or rectangular grids by continuous automatic welders. This report provides WWR product information, material specifications, and design/detailing recommendations, with an overview of manufacturing, shipping, and construction use in various applications of concrete construction.

Keywords: cast-in-place; cold-working; constructability; deformed reinforcement; mesh; precast; post-tensioned; prestressed; reinforcement; welded wire.

 

Document Details

Author: ACI Committee 439

Publication Year: 2018

Pages: 18.00

ISBN: 9781641950213

Categories: Reinforcement

Formats: Printed Document or PDF

Table of Contents

CHAPTER 1—INTRODUCTION AND SCOPE

1.1—Introduction

1.2—Scope

1.3—W and D designations

1.4—Product description

CHAPTER 2—NOTATION AND DEFINITIONS

2.1—Notation

2.2—Definitions

CHAPTER 3—CODES AND STANDARDS

3.1—AASHTO

3.2—American Concrete Institute

3.3—ASTM International

CHAPTER 4—MANUFACTURING PROCESS

4.1—Sustainability

4.2—Cold-working

4.3—Straightening and cutting

4.4—Welding

4.5—Fabrication

4.6—Shipping and handling

CHAPTER 5—CONSTRUCTION APPLICATIONS

5.1—Cast-in-place reinforced concrete

5.2—Precast concrete

5.3—Prestressed and post-tensioned concrete

5.4—Tilt-up

CHAPTER 6—CONSTRUCTIBILITY

6.1—Field welding

6.2—Field bending

6.3—Cutting

6.4—Lap splicing and anchorage

6.5—Placing tolerances

6.6—Detailing

CHAPTER 7—REFERENCES

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