The Table of Contents for this section is available.
The work covered by this section consists of furnishing, fabricating, and installing the various types of supports for ground mounted signs in accordance with the requirements of the plans and the provisions of these specifications.
The provisions of Section 900 will be applicable to all work covered by this section.
The types of supports covered by this section are:
1. Breakaway steel beam sign supports
2. Simple steel beam sign supports
3. 3-lb. steel U-channel posts
4. 2-lb. steel U-channel posts
All materials shall meet the requirements of Division 10 shown below:
Breakaway or simple sign supports (W or S shapes) Subarticle 1094-1(A)
High strength bolts, nuts, and washers Subarticle 1094-1(A)
Steel U-channel posts Article 1094-1
Joint sealer Article 1028-2
Zinc-rich paint Article 1080-9
(A) Breakaway or Simple Steel Beam Sign Supports:
(1) Location:
The Engineer will establish the location of each sign longitudinally. The Contractor shall be responsible for the proper elevation, offset, level, and orientation of all signs.
(2) Support Lengths:
The support lengths shown in the original plans are estimated from available project data for bid purposes. The Engineer will determine the actual support lengths from field measurements, and will furnish revised plan sheets to the Contractor.
The Contractor shall not order supports until the Engineer has determined the revised support lengths.
(3) Installation:
The supports shall be fabricated and installed as shown in the plans. The upper and middle sections of breakaway supports shall be cut from the same member. After bolting of hinge connections, the 2 sections shall be in the same position, relative to each other, as prior to being cut. Each component part shall be galvanized in accordance with ASTM A123 prior to assembly. No punching, cutting, or welding will be permitted after galvanizing. Supports shall be uniformly straight to within 1/8 inch tolerance for pieces less than 20 feet in length and 1/4 inch tolerance for pieces over 20 feet in length. The hinge joint in the breakaway supports shall be bolted so as to ensure true alignment of the 2 sections.
Breakaway supports shall be completely assembled prior to erection. Supports shall be plumb. Shimming shall not be permitted. Adequate care shall be taken during erection of supports to prevent damage to the surface finish. Two coats of a zinc-rich paint shall be used in touching up damaged areas on all galvanized materials.
(B) Steel U-Channel Posts:
(1) Location:
The Engineer will establish the location of each sign longitudinally. The Contractor shall be responsible for the proper elevation, offset, level, and orientation of all signs.
(2) Installation:
Steel posts for Types D, E, and F signs shall be galvanized steel 3-lb. U-shaped channel posts. Steel posts for milemarkers shall be galvanized steel 2-lb. U-shaped channel posts. The posts shall be of sufficient length to permit mounting the signs as shown in the plans.
The posts shall be driven to the required depth, and shall be plumb. Driving may be done by hand or by mechanical means. The posts shall be protected by a driving cap during driving. No concrete footings are required.
Any post which is bent, or otherwise damaged in driving, shall be replaced.
No welding or cutting will be permitted in the field, except for the saw cutting of U-channel post material for the supports and the framing and cross-bracing required for Types D, E, and F signs with 2 or more supports.
Two coats of a zinc-rich paint shall be used in touching up the tops of U-channel posts damaged in driving, cut ends of U-channel posts, frames, and cross-bracing, and damaged areas on these and all other galvanized materials.
(A) Breakaway or Simple Steel Beam Sign Supports:
The quantity of breakaway or simple steel beam sign supports to be paid for will be the number of pounds of structural steel which have been incorporated into the completed and accepted sign supports. The computed nominal weights shown in the final revised plans will be used in determining this quantity.
Measurement will not be made of the weight of nuts, bolts, and washers which are part of the sign support, as they will be considered incidental to the work.
(B) 3-lb. Steel U-Channel Posts:
The quantity of 3-lb. steel U-channel posts to be paid for will be the actual number of linear feet of U-channels which have been incorporated into the completed and accepted post assemblies including all posts, frames, and cross braces. Measurement will be made to the nearest 0.1 of a linear foot.
(C) 2-lb. Steel U-Channel Posts:
The quantity of 2-lb steel U-channel posts to be paid for will be the actual number of 2-lb. steel U-channel posts which have been installed and accepted.
(A) Breakaway or Simple Steel Beam Sign Supports:
The quantities of breakaway or simple steel beam sign supports, measured as provided in Subarticle 9034(A), will be paid for at the contract unit price per pound for "Breakaway Steel Beam Sign Supports" or "Simple Steel Beam Sign Supports".
Such prices and payments will be full compensation for all work necessary to complete the above pay items including but not limited to furnishing, fabricating, and installing all sign supports with any breakaway assemblies that are required.
(B) 3-lb. Steel U-Channel Posts:
The quantity of 3-lb. steel U-channel posts, measured as provided for in Subarticle 9034(B), will be paid for at the contract unit price per linear foot for "3-lb Steel U-channel Posts".
Such price and payment shall be full compensation for all work necessary to complete this pay item including but not limited to furnishing and installing the posts, supports, frames, and cross-braces in paved islands or any other material; cutting any pavement; and furnishing and applying joint sealer.
(C) 2-lb. Steel U-Channel Posts:
The quantity of 2-lb. steel U-channel posts, measured as provided for in Subarticle 9034(C), will be paid for at the contract unit price each for "2-lb Steel U-Channel Posts".
Such price and payment will be full compensation for all work necessary to complete this pay item including but not limited to furnishing and installing the post.
(D) Pay Items:
Payment will be made under:
Breakaway Steel Beam Sign Supports Pound
Simple Steel Beam Sign Supports Pound
3-lb Steel U-Channel Posts Linear Foot
2-lb Steel U-Channel Posts Each