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9-32 Mailbox Support9-32 Mailbox Support
9-32.1 Steel Posts
The Mailbox Support Type 1 post shall be 2 inches outside diameter, 14-gage, mechanical tubing, and shall conform to ASTM A513. Type 1 mailbox supports shall meet the Manual for Assessing Safety Hardware (MASH) crash test criteria. Galvanizing shall conform to G 90 coating as defined in ASTM A653, or an approved equal. Any damage to galvanized paint surfaces shall be treated with two coats of paint conforming to Section 9-08.1(2)B .
9-32.2 Bracket, Platform, and Anti-Twist Plate
The bracket and platform for the Mailbox Support Types 1 and 2 shall be 16-gage sheet steel, conforming to ASTM A1011 or ASTM A1008. The anti-twist plate for the Mailbox Support Type 1 shall be 16-gage sheet steel, conforming to ASTM A1011 or ASTM A1008.
9-32.3 Vacant
9-32.4 Vacant
9-32.5 Fasteners
Unless otherwise specified, bolts and nuts shall be Grade 5 commercial bolt stock, galvanized in accordance with ASTM A153. Washers, unless otherwise specified, shall be malleable iron, or cut from medium steel or wrought iron plate. Washers and other hardware shall be galvanized in accordance with AASHTO M111.
9-32.6 Vacant
9-32.7 Type 2 Mailbox Support
Type 2 mailbox supports shall be 2-inches outside diameter, 14-gage steel tube and shall meet the Manual for Assessing Safety Hardware (MASH) crash test criteria. Type 2 mailbox supports shall be installed in accordance with the manufacturer’s recommendations.
9-32.8 Concrete Base
The concrete in the concrete base shall meet or exceed the requirements of Section 6-02.3(2)B .
9-32.9 Steel Pipe
The requirements for commercially available, Schedule 40, galvanized steel pipe, elbows, and couplings shall be met for all parts not intended to be bent or welded. Welded and bent parts shall be galvanized after fabrication in accordance with AASHTO M 111.
9-32.10 Vacant
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