Telescopic Sign Post Specifications_033125.pdf
PDF 59 KB Posted
- Attached to
- TELESCOPIC SIGN POSTS, ANNUAL ESTIMATED QUANTITIES State and local contract opportunity
- Solicitation number
- 6665
- Issued by
- Oakland County, Michigan
About this file
This document contains technical specifications for Square Tube Unistrut posts for the Road Commission for Oakland County, Michigan, detailing two specific sizes of galvanized steel posts for sign installation. The specifications cover 1" x 1" and 1-1/4" x 1-1/4" posts as well as 2-1/2" x 2-1/2" posts, with precise requirements for material composition, cross-section dimensions, hole spacing, and galvanization. For the smaller posts, available lengths are 3 feet (36"), 4 feet (48"), and 5 feet (60"), while the larger posts come in 10 feet (120"), 12 feet (144"), and 16 feet (192") lengths.
The specifications mandate that the steel posts conform to specific standards, including ASTM A-513 for Hot-Rolled Carbon Sheet Steel and MDOT "SIGN-207-D, PERFORATED STEEL SQUARE TUBE SIGN BREAKAWAY SYS" standard specification. The posts must be made of 12-gauge or 10-gauge steel, feature 3/8" or 7/16" diameter holes spaced 1" apart on all four sides, and have a hot-dipped galvanized finish. Dimensional tolerances are tightly controlled, with specific requirements for outer and inner diameter cut tolerances to ensure consistency and quality for sign installation purposes.
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Other files for this state and local contract opportunity
| File | Type | Posted |
|---|---|---|
| 6665_IFB.pdf | ||
| MDOT SIGN-207-D Specification.pdf |
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Text version
Specifications, Square Tube Unistrut
1” x 1” and 1-1/4” x 1-1/4” Galvanized Square Unistrut
1. The steel post shall conform to the standard specification for Hot-Rolled Carbon
Sheet Steel, structural quality ASTM A-513.
2. The cross section of the post shall be 1”x1” or 1-1/4” x 1-1/4” square tube formed of 12-gauge steel with 3/8” diameter holes spaced 1” apart on all four sides.
3. The steel post shall be straight and shall have a hot-dipped galvanized, smooth uniform finish without excess galvanizing blocking the holes.
4. The outer diameter shall have a cut tolerance of 0 to 1/8 inch and the inside diameter shall have a cut tolerance of +/- .010 inch.
5. Post lengths shall be specified as 3 feet (36”), 4 feet (48”), or 5 feet (60”) on the purchase order.
2-1/2” x 2-1/2” Galvanized Square Unistrut
1. The 2-1/2” x 2-1/2” galvanized steel post shall conform to the MDOT “SIGN-207-
D, PERFORATED STEEL SQUARE TUBE SIGN BREAKAWAY SYS” standard specification.
2. The cross section of the post shall be 2-1/2” x 2-1/2” square tube formed of 10
Gauge steel with 7/16” diameter holes on all four sides spaced 1” apart. Refer to
MDOT detail.
3. Post lengths shall be specified as 10 feet (120”), 12 feet (144”), or 16 feet (192”) on the purchase order.
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