Field Inspection of Reinforcing Bars

Transcription

1 Field Inspection of Reinforcing Bars This Publication is to Serve as a Companion to the CRSI Publication Placing Reinforcing Bars. First Edition Concrete Reinforcing Steel Institute 2014

2 Founded in 1924, the (CRSI) is a technical institute and an ANSI-accredited Standards Developing Organization (SDO) that stands as the authoritative resource for information related to steel reinforced concrete construction. Serving the needs of engineers, architects and construction professionals, CRSI offers many industry-trusted technical publications, standards documents, design aids, reference materials and educational opportunities. CRSI Industry members include manufacturers, fabricators, material suppliers and placers of steel reinforcing bars and related products. Our Professional members are involved in the research, design, and construction of steel reinforced concrete. CRSI also has a broad Region Manager network that supports both members and industry professionals and creates awareness among the design/construction community through outreach activities. Together, they form a complete network of industry information and support. 1 st Edition, 2014 Printed in the United States of America This book or parts thereof may not be reproduced in any form without permission of the. 933 North Plum Grove Road Schaumburg Illinois

3 Field Inspection of Reinforcing Bars Prepared under the direction of the CRSI Committee on Engineering Practice by the Committee on Placing Reinforcing Bars Chris Stowers (Chairman) Harris Davis Rebar LLC Larry G. Alcorn Barsplice Products, Inc. James Bartlett Baker Concrete Construction, Inc. Tony Buck Jim Bromley Larry Campbell Wesley Carlson Barsplice Products, Inc Samuel Conley Whitacre Engineering Company Lee M. Disbury Coral Steel Company Terry Estes J & B Steel Erectors, Inc. Donald A. Evanson West Wind Reinforcing, LLC Dennis J. Fontenot Joe Gericke The American Group of Constructors Ron Ghrist Bellis Steel Company, Inc. David A. Grundler asa - Applied Systems Associates, Inc. Robert W. Hall Long Steel North America Dennis L. Hunter Hart Keeble I.M.P.A.C.T. Eric Kraeutle Kriss Lewis Amber Steel Company Richard Lutz ERICO International Corporation Jeremy Maldonado Headed Reinforcement Corp. Jarrett Martin Mar-Mac Wire, Inc. John M. Marsch The American Group of Constructors Richard A. Martini Ron McCleary Mike Mota Cary Newton JD Steel Company, Inc. Steve Parker I.M.P.A.C.T. Gary Pehanich Harris Davis Rebar LLC Bryan Porter CMC Steel Arizona Mike Pritchett Harmon Steel, Inc. Adam Raines Dale Rinehart Sierra Rebar, LLC Gregory Rohm Ryann Sickel Rebar Inc. Lyle Sieg Kevin Soule Soule Software John J. Tekus Akron Rebar Company Sean Torres Amber Steel Company Jim Volk Ken Woolfenden Peter Zdgiebloski Anthony L. Felder (CRSI Staff Liaison) Field Inspection of Reinforcing Bars i

4 Introduction CONTENTS1 2 Safety Precautions 6 Inspection of Reinforcing Bars 8 ASTM Standard Reinforcing Bars 11 Identification Marks ASTM Standard Reinforcing Bars 12 Overall Diameter of Reinforcing Bars 13 ACI Hooks 16 Concrete Cover 19 Rust on Reinforcing Bars 20 Radial Prefabrication (Bend Type 9) 21 Field Cutting of Reinforcing Bars 21 Bending, Straightening, and Rebending Reinforcing Bars 24 Tie Wire and Tying Reinforcing Bars 26 Reinforcing Bar Placing Tolerances 28 Bar Supports 30 Lap Splices 31 Mechanical Splices 34 Specialty & Corrosion-Resistant Steel Reinforcement 42 References A-1 Appendix A US Manufacturers of Concrete Reinforcing Bars B-1 Appendix B Metric Reinforcing Bars ii

5 Introduction The purpose of this publication is to serve as a companion to the CRSI publication Placing Reinforcing Bars. The contents herein were collected from various CRSI publications and covers some of the key aspects of placing reinforcing bars, published in a small, convenient page format. In most of the sections, reference is made to a specific publication for further information. This publication replaces CRSI s Pocket Guide for Field Inspection of Rebar booklet and also presents the same information as the past Field Identification Guide for Reinforcing Bars. Field Inspection of Reinforcing Bars 1