ACI 315-99 - Details and Detailing of Concrete Reinforcement - Standards of Practice

Oct 23, 2026

Upload by Aran

ACI 315-99 establishes standards of practice for the architect/engineer (A/E) and the reinforcing steel detailer when showing reinforcing steel details. It explains responsibilities for preparing structural design information and for developing reinforcing steel dimensions and quantities that conform to structural drawings and project specifications. The standard is organized into three parts covering A/E responsibilities, detailer responsibilities, and a reference section with tables and figures, including structural and placing drawing practices and related design-detail requirements.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages44

Reading Time1 h 51 min

AccessFree to download

Part A—Responsibilities of the architect/engineer

Chapter 1—Structural drawings

Chapter 2—Standards of practice

Part B—Responsibilites of the detailer

Chapter 3—Placing drawings

Chapter 4—Fabricating practice standards

Chapter 5—Supports for reinforcing steel

Chapter 6—Computer-assisted detailing

Chapter 7—Recommended practices for location of bars

Part C—Figures and tables

Foreword

Chapter 8—Glossary

Chapter 9—References

Chapter 10—Notations

ACI 315-99 Details and Detailing of Concrete Reinforcement (ACI 315-99) Reported by ACI Committee 315 Ronald D. Flach Chairman Michael Baynard Miguel R. Casias Robert E. Doyle Gustav G. Erlemann Gerald E. Goettsche Anthony L. Felder Secretary Paul Gordon Edward S. Hoffman David W. Johnston Robert W. Johnson Harry B. Lancelot, III Douglas D. Lee A. Murray Lount Peter Meza Vasant C. Mistry Roy H. Reiterman Milton R. Sees This document provides standards of practice for both the architect/engineer (A/E) and reinforcing steel detailer in showing reinforcing steel details. It is divided into three parts: one addressed to the A/E, one for the detailer, and a third providing a reference table and figures. It defines the responsibilities of both the A/E and detailer. It then establishes certain standards of practice for both the structural and placing drawings. Keywords: beams (supports); bending (reinforcing steels); bridges (structures); buildings; columns (supports); concrete slabs; detailing; drafting (drawing); fabrication; floor systems; foundations; hooked reinforcing steels; microcomputers; placing drawings; reinforced concrete; reinforcing steels; splicing; stirrups; structural design; structural drawings; ties; tolerances (mechanics); walls; welded-wire fabric. CONTENTS Part A—Responsibilities of the architect/engineer Chapter 1—Structural drawings, p. 315-2 1.1—General 1.2—Drawing standards 1.3—Structural drawings—Buildings and other structures 1.4—Structural drawings—Highway and transportation structures Chapter 2—Standards of practice, p. 315-3 2.1—General 2.2—Tolerances 2.3—Bar lengths 2.4—Hooks and bends 2.5—Beams and girders 2.6—Columns 2.7—Development and splices of reinforcing steel 2. 8—Joint details 2.9—Reinforcing steel supports 2.10—Special details for seismic design of frames, joints, walls, diaphragms, and two-way slabs 2.11—Corrosion-resistant coatings for reinforcing steel Part B—Responsibilites of the detailer Chapter 3—Placing drawings, p. 315-10 3.1—Definition 3.2—Scope 3.3—Procedure 3.4—Drawing standards 3.5—Building drawings 3.6—Highway drawings 3.7—Detailing to fabricating standards Chapter 4—Fabricating practice standards, p. 315-15 4.1—Fabrication 4.2—Extras 4.3—Tolerances Chapter 5—Supports for reinforcing steel, p. 315-16 5.1—General 5.2—Types of bar supports 5.3—Side form spacers and beam bolsters 5.4—Placing reinforcing steel supports Chapter 6—Computer-assisted detailing, p. 315-16 6.1—Use of computers in detailing 6.2—Placing drawings 6.3—Ordering procedures Chapter 7—Recommended practices for location of bars designated only by size/spacing, p. 315-17 ACI 315-99 supersedes ACI 315-92 and became effective August 31, 1999. Copyright 􀀁 1999, American Concrete Institute. All rights reserved including rights of reproduction and use in any form or by any means, including the making of copies by any photo process, or by electronic or mechanical device, printed, written, or oral, or recording for sound or visual reproduction or for use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright proprietors. 315-2 MANUAL OF CONCRETE PRACTICE Chapter 8—Glossary, p. 315-17 Chapter 9—References, p. 315-18 9.1—Reference standards 9.2—Cited references Chapter 10—Notations, p. 315-19 Part C—Figures and tables, p. 315-20 FOREWORD Increased use of computers has led to sophisticated techniques of structural analysis and has increased manufacturing and fabrication capabilities. This added degree of sophistication has resulted in more complex structures being designed and built with structural members that have long spans, shallow depths, and contain a high percentage of reinforcing steel. In the past, during the course of developing placing drawings, the detailer often suggested solutions in areas where the details were incomplete and where

FAQs

What is ACI 315-99 meant to standardize?

It standardizes how reinforcing steel details are shown, defining responsibilities for both the architect/engineer (A/E) and the reinforcing steel detailer, including standards for structural and placing drawings.

How does ACI 315-99 split the responsibilities between the A/E and the detailer?

The A/E prepares the structural design to meet applicable building code requirements and provides enough contractual definition to convey detailing requirements. The detailer develops dimensions and quantities of reinforcing steel to conform to the A/E structural drawings and project specifications.

How does ACI 315-99 handle unit systems (inch-pound vs SI)?

It presents values in inch-pound and SI units and states that hard metric values are not exact equivalents, so each system should be used independently. Soft metric values are exact equivalents, so combining inch-pound with soft metric values conforms to the standard.

Oct 23, 2026

Upload by Aran