Montana Department of Transportation (MDT) · 2020 Standard Specifications for Road & Bridge Construction
Section 704 — Signing Materials
Montana 2020 Standard Specifications for Road & Bridge Construction, Section 704. Full text, cross-references and related pay items on BuildSpec.
SECTION 704 SIGNING MATERIALS 704.01 MATERIAL FOR SIGNS 704.01.1 Sheet Aluminum Use aluminum alloy in accordance with the Aluminum Association alloy AA5052-H38 or AA6061-T6 requirements. Meet the sheet thickness requirements listed in Table 704-1. TABLE 704-1 SINGLE POST MOUNTING Sign Size Inches (mm) Thickness Inches (mm) Regulatory Series Without Back Bracing 0 to 33 (0 to 838) wide, inclusive 0.080 (2) 34 to 41 (864 to 1,041) wide, inclusive 0.100 (2.54) 42 to 51 (1,067 to 1,295) wide, inclusive 0.125 (3.17) Warning Series Without Back Bracing 30 x 30 (762 x 762) or smaller 0.080 (2) 36 x…
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