ACI 347R-14: GUIDE TO FORMWORK FOR CONCRETE

1 GUIDE to FORMWORK for CONCRETE Reported by ACI Committee 347. ACI 347R-14. First Printing July 2014. ISBN: 978-0-87031-910-5. GUIDE to FORMWORK for CONCRETE Copyright by the American CONCRETE Institute, Farmington Hills, MI. All rights reserved. This material may not be reproduced or copied, in whole or part, in any printed, mechanical, electronic, film, or other distribution and storage media, without the written consent of ACI. The technical committees responsible for ACI committee reports and standards strive to avoid ambiguities, omissions, and errors in these documents.

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5 Order information: ACI documents are available in print, by download, on CD-ROM, through electronic subscription, or reprint and may be obtained by contacting ACI. Most ACI standards and committee reports are gathered together in the annually revised ACI Manual of CONCRETE Practice (MCP). American CONCRETE Institute 38800 Country Club Drive Farmington Hills, MI 48331. Phone: + Fax: + ACI 347R-14. GUIDE to FORMWORK for CONCRETE Reported by ACI Committee 347. Kenneth L. Berndt, Chair Rodney D. Adams Brian J. Golanowski H. S. Lew Pericles C. Stivaros Mary Bordner-Tanck Timothy P.

6 Hayes Robert G. McCracken Daniel B. Toon George Charitou Gardner P. Horst Eric S. Peterson Ralph H. Tulis Eamonn F. Connolly Jeffery C. Jack Steffen Pippig James N. Cornell II David W. Johnston Matthew J. Poisel Consulting Members Jack L. David Roger S. Johnston Douglas J. Schoonover Samuel A. Greenberg Aubrey L. Dunham Robert G. Kent Aviad Shapira R. Kirk Gregory Jeffrey C. Erson Kevin R. Koogle John M. Simpson Noel J. Gardner Jim E. Kretz Rolf A. Spahr Objectives of safety, quality, and economy are given priority in these CHAPTER 2 NOTATION AND DEFINITIONS, p. 2. guidelines for FORMWORK .

7 A section on contract documents explains Notation, p. 2. the kind and amount of specification guidance the engineer/ Definitions, p. 2. architect should provide for the contractor. The remainder of the GUIDE advises the FORMWORK engineer/contractor on the best ways CHAPTER 3 GENERAL CONSIDERATIONS, p. 3. to meet the specification requirements safely and economically. Achieving economy in FORMWORK , p. 3. Separate chapters deal with design, construction, and materials for FORMWORK . Considerations specific to architectural CONCRETE Contract documents, p. 4. are also outlined in a separate chapter.

8 Other sections are devoted to FORMWORK for bridges, shells, mass CONCRETE , and underground CHAPTER 4 DESIGN, p. 5. work. The concluding chapter on FORMWORK for special methods of General, p. 5. construction includes slipforming, preplaced-aggregate CONCRETE , Loads, p. 6. tremie CONCRETE , precast CONCRETE , and prestressed CONCRETE . Member capacities, p. 9. Safety factors for accessories, p. 9. Keywords: anchors; architectural CONCRETE ; coatings; construction;. Shores, p. 10. construction loads; contract documents; falsework; form ties; forms; form- work; foundations; quality control; reshoring; shoring; slipform construc- Bracing and lacing, p.

9 10. tion; specifications; tolerances. Foundations for FORMWORK , p. 10. Settlement, p. 10. CONTENTS. CHAPTER 5 CONSTRUCTION, p. 10. CHAPTER 1 INTRODUCTION AND SCOPE, p. 2 Safety precautions, p. 10. Introduction, p. 2 Construction practices and workmanship, p. 12. Scope, p. 2 Tolerances, p. 13. Irregularities in formed surfaces, p. 14. Shoring and centering, p. 14. ACI Committee Reports, Guides, and Commentaries are Inspection and adjustment of FORMWORK , p. 14. intended for guidance in planning, designing, executing, and Removal of forms and supports, p. 15. inspecting construction.

10 This document is intended for the use Shoring and reshoring of multistory structures, p. 17. of individuals who are competent to evaluate the significance and limitations of its content and recommendations and who will accept responsibility for the application of the material it contains. The American CONCRETE Institute disclaims any and all responsibility for the stated principles. The Institute shall not be liable for any loss or damage arising therefrom. ACI 347R-14 supesedes ACI 347-04 and was adopted and published July 2014. Copyright 2014, American CONCRETE Institute.