combination bar clips and spreaders used in construction with epoxy-coated
reinforcing bars shall be made corrosion resistant or coated with
dielectric material. Epoxy-coated bars shall be tied with plastic-coated
tie wire; or other materials acceptable to the Contracting Officer.]
3.2.3
Splicing
As indicated. For splices not indicated, ACI 301. Do not splice at points
of maximum stress. Overlap welded wire fabric the spacing of the cross
wires, plus 50 mm 2 inches. [AWS D1.4. Welded splices shall be approved
prior to use.]
[3.2.4
Future Bonding
Plug exposed, threaded, mechanical reinforcement bar connectors with a
greased bolt. Bolt threads shall match the connector. Countersink the
connector in the concrete. Calk the depression after the bolt is
installed.]
3.2.5
Cover
Concrete cover for reinforcement is shown in Table 4. Placement tolerance
is plus 6 mm 1/4 inch. The cover to the principle reinforcing bars shall
be not less than 2 times the nominal maximum aggregate size nor less than
1.5 times the effective diameter of the reinforcing bars.
Table 4 - Minimum Concrete Cover Over Reinforcement
Cover over post-
Zone
Cover over reinforcing steel
tensioning ducts
Atmospheric zone not
2.5 in.
3 in.
subject to salt spray
Tidal, splash, and
3.0 in.
3.5 in.
atmospheric zone subject
to salt spray
______________________________________________________________________________
Submerged zone
2.5 in.
3 in.
Cover of stirrups
1/2 in.
-
less than those listed above
Table 4 - Minimum Concrete Cover Over Reinforcement
Cover over post-
Zone
Cover over reinforcing steel
tensioning ducts
Atmospheric zone not
65 mm
75 mm
subject to salt spray
Tidal, splash, and
75 mm
90 mm
atmospheric zone subject
to salt spray
______________________________________________________________________________
Submerged zone
75 mm
75 mm
Cover of stirrups
15 mm
-
SECTION 03311
Page 31
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