CHAPTER 2—STANDARDS OF PRACTICE 2.1—General This chapter provides the A/E with minimum standards for
application during the development of the design. Informa-
tion presented here is a collection of notes derived from ACI
318 (318M); ACI 343R; AREMA Manual for Railway Engi- neering, Chapter 8, “Concrete Structures and Foundations;”
and AASHTO “Standard Specifications for Highway Bridges,”
industry practice, practical considerations, and research re-
sults current at the time of this report. Reinforcing steel for
structures designed under the provisions of ACI 349,
ACI
359,
and other similar documents can generally incorporate
the direction given in this standard unless otherwise prohib-
ited by the provisions of the respective related documents.
2.2—Tolerances ACI 117 provides standard tolerances for concrete construc-
tion. Practical limitations of equipment and production efficien-
cy have led to the establishment of certain fabrication tolerances
that can be met with standard shop equipment. These standard
tolerances are shown in
Fig. 8
and
9
(in
Part C) for both straight
and bent bars. Where more restrictive tolerances are required
than those shown in the referenced figures, they shall be indi-
cated in the contract documents. The effects of tolerances on
cover, strength, constructability, and serviceability of the struc-
ture should be considered by the A/E.
2.3—Bar lengths Placing drawings and bar lists must show all bar dimen-
sions as out-to-out with bar lengths as the sum of all detailed
dimensions, including hooks A and G (
Table 1 in Part C
).
*
The term “highway and transportation structures” used herein includes bridges,
drainage, and related structures.
†
Subject to requirements of ACI 318 (318M), Section 7.7, or the AASHTO bridge
specifications, Articles 8.22 and 9.26.
