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aci 347-04 guide to formwork for concrete - pdf free download

ACI 347-04
Guide to Formwork for Concrete
An ACI Standard
Reported by ACI Committee 347
Pericles C. Stivaros
Kevin L. Wheeler
Rodney D. Adams
Samuel A. Greenberg
H. S. Lew
Kenneth L. Berndt
R. Kirk Gregory
Donald M. Marks
Randolph H. Bordner
Awad S. Hanna
Robert G. McCracken
Ramon J. Cook
G. P. Jum Horst
William R. Phillips
James N. Cornell
Mary K. Hurd
Douglas J. Schoonover
Jack L. David
David W. Johnston
W. Thomas Scott
William A. Dortch
Roger S. Johnston
Aviad Shapira
Jeffrey C. Erson
Dov Kaminetzky
Rolf A. Spahr
N. John Gardner
Harry B. Lancelot
Objectives of safety, quality, and economy are given priority in these guidelines for formwork. A section on contract documents explains the kind and
amount of specification guidance the engineer/architect should provide for
the contractor. The remainder of the report advises the formwork engineer/
contractor on the best ways to meet the specification requirements safely
and economically. Separate chapters deal with design, construction, and
materials for formwork. Considerations peculiar to architectural concrete
are also outlined in a separate chapter. Other sections are devoted to formwork for bridges, shells, mass concrete, and underground work. The
concluding chapter on formwork for special methods of construction
includes slipforming, preplaced-aggregate concrete, tremie concrete,
precast, and prestressed concrete.
Preface, p. 347-2
Chapter 1—Introduction, p. 347-2
1.3—Achieving economy in formwork
1.4—Contract documents
Chapter 2—Design, p. 347-5
2.3—Unit stresses
2.4—Safety factors for accessories
2.6—Bracing and lacing
2.7—Foundations for formwork
Keywords: anchors; architectural concrete; coatings; concrete; construction;
falsework; form ties; forms; formwork; foundations; quality control;
reshoring; shoring; slipform construction; specifications; tolerances.
ACI Committee Reports, Guides, Standard Practices, and
Commentaries are intended for guidance in planning,
designing, executing, and inspecting construction. This
document is intended for the use 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.
Reference to this document shall not be made in contract
documents. If items found in this document are desired by the
Architect/Engineer to be a part of the contract documents, they
shall be restated in mandatory language for incorporation by
the Architect/Engineer.
Chapter 3—Construction, p. 347-9
3.1—Safety precautions
3.2—Construction practices and workmanship
3.4—Irregularities in formed surfaces
3.5—Shoring and centering
3.6—Inspection and adjustment of formwork
3.7—Removal of forms and supports
3.8—Shoring and reshoring of multistory structures
It is the responsibility of the user of this document to
establish health and safety practices appropriate to the specific
circumstances involved with its use. ACI does not make any
representations with regard to health and safety issues and the
use of this document. The user must determine the
applicability of all regulatory limitations before applying the
document and must comply with all applicable laws and
regulations, including but not limited to, United States
Occupational Safety and Health Administration (OSHA)
health and safety standards.
Chapter 4—Materials, p. 347-16
ACI 347-04 supersedes ACI 347R-03 and became effective October 15, 2004.