Aci 315-99 supersedes aci 315-92 and became effective August 31, 1999

2.11.2 Epoxy-coated reinforcing bars
2.11.2.1 Material specification—
See “Standard Speci-
fication for Epoxy-Coated Reinforcing Steel Bars”
(ASTM A 775/A 775M). To meet ACI 318 (318M), the re-
inforcing bars that are to be epoxy-coated shall conform to
the requirements of ACI 3.5.3.1.
2.11.2.2 Identification—Epoxy-coated bars are identi-
fied with a suffix (E), or with an asterisk (*) and a note stat-
ing that all bars marked are to be epoxy-coated.
2.11.2.3 Compatible tie wire and bar supports—Coated
tie wire or other acceptable materials must be specified for
fastening epoxy-coated reinforcing bars. Suitable coatings
are nylon, epoxy, or vinyl. Bar supports should be made of
dielectric material or wire bar supports should be coated with
dielectric material, such as epoxy or vinyl compatible with
concrete, for a minimum distance of 2 in. (50 mm) from the
point of contact with the epoxy-coated reinforcing bars. Re-
inforcing bars used as support bars should be epoxy-coated.
2.11.3 Zinc-coated (galvanized) reinforcing bars
2.11.3.1 Material specification—See “Standard Specifi-
cation for Zinc-Coated (Galvanized) Steel Bars For Concrete
Reinforcement” (ASTM A 767/A 767M). To meet ACI 318
*
Even more necessary for moderate seismic risk, wind, or other lateral load.

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 315-10
MANUAL OF CONCRETE PRACTICE
(318M) requirements, the reinforcing bars that are to be zinc-
coated (galvanized) shall conform to ACI 3.5.3.1.
2.11.3.2 Supplementary requirements—There are three
Supplementary Requirements in ASTM A 767/A 767M:
Supplementary Requirement S1 requires sheared ends to be
coated with a zinc-rich formulation; when bars are fabricated
after galvanizing, S2 requires damaged coating to be re-
paired with a zinc-rich formulation; and if ASTM A 615/A
615M billet-steel bars are being supplied, S3 requires that a
silicon analysis of each heat of steel be provided. S1 and S2
should be specified when fabrication after galvanization in-
cludes cutting and bending. S2 should be specified when fab-
rication after galvanization includes only bending.
2.11.3.3 Coating weights (mass)—Table 1 of ASTM A 767
has two classes of coating weights (mass). Class 1 (3.5 oz/ft
2
[1070 g/m
2
]) is normally specified for general construction.