Rev. 9-1-95

CURB MOUNTED BRIDGE RAILING

706-B-112

 

DESCRIPTION. This work shall consist of construction of bridge railing of the materials shown on the plans, in accordance with these specifications, and in close conformity to the lines, grades, and dimensions shown on the plans or established by the Engineer.

MATERIALS. Materials shall be in accordance with following:

--Guard Rail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .910.09

--Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .910.02

--Steel or Iron Castings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .910.05

 

Steel or iron castings shall be galvanized in accordance with ASTM A 153, Class A or as shown on the plans.

CONSTRUCTION REQUIREMENTS. Railings shall be constructed true to the line, grade, and dimensions shown on the plans, and shall not follow unevenness in the superstructure. The handrails and curbs shall be vertical. Curbs and railing shall not be placed on a span until centering or falsework has been removed, to render the span self-supporting.

Fabrication and erection shall be in accordance with 706. Metal railings shall be adjusted prior to fixing in place to ensure matching at abutting joints, correct alignment, and camber throughout their length. Holes for field connections shall be drilled with the railing in place in the structure at the proper grade and alignment.

Steel portions of the railing shall be galvanized unless otherwise specified. Galvanizing shall be done after fabrication of the railing and shall be in accordance with AASHTO M 111.

METHOD OF MEASUREMENT. This work will be measured by the meter (linear foot). Measurement will be made along the top of the railing.

BASIS OF PAYMENT. This work will be paid for at the contract unit price per meter (linear foot) for bridge railing, curb mount, of the number of tubes shown in the Schedule of Pay Items.

Payment will be made under:

--Pay Item ---------------------------------------------------------------------Pay Unit

--Bridge Railing, Curb Mount, ____ Tube . . . . . . . . . . . . . . . . . . . . . . . . m (LFT)

 

The costs of steel posts, terminal connectors, connection plates, spacer blocks, anchor bolts, anchorage devices, labor, equipment, furnishing and placing of all materials, and necessary incidentals shall be included in the cost of this work.