Illinois Department of Transportation (IDOT) · Standard Specifications for Road and Bridge Construction
Section 1093 — SIGN SUPPORTS
Illinois Standard Specifications for Road and Bridge Construction, Section 1093. Full text, cross-references and related pay items on BuildSpec.
Art. 1093.01 Sign Supports 1082 SECTION 1093. SIGN SUPPORTS 1093.01 Structural Steel Supports. The structural steel shall have a silicone content suitable for galvanizing. (a) Breakaway. All structural steel shall be according to AASHTO M 270 (M 270M). After fabrication, the post, fuse plate, base plate, and upper 6 in. (150 mm) of the stub post shall be galvanized according to AASHTO M 111. Bolts and nuts on the fuse plates may be plated according to ASTM B 633 (B 633M) SC3 and then painted with an approved zinc rich paint. All high strength bolts, nuts, and washers shall be according to…
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