1014STEEL BRIDGE RAILING

1014.1DESCRIPTION—This work is the construction of a steel bridge railing.

1014.2MATERIAL —Galvanize materials as specified in Section 1105.02(s). Before fabrication, submit

shop drawings for review and acceptance.

• Steel Rails. Rails may be either pipe conforming to ASTM A53, Type E or S, Grade B; or tubing conforming to ASTM A500 or A501.

• Railing Posts. ASTM A47/A47M, Grade 24018 (Grade 35018), or ASTM A536, Grade 60-40-18.

• Toggle Bolts. An acceptable, galvanized type, capable of supporting a 9,000 -pound load in tension, when tested through a 1 -inch round hole. Toggle bolts may be cadmium -plated to conform to the requirements of ASTM B766, Class 5, in place of galvanizing.

• Miscellaneous. Malleable iron wedges, shims, end caps, washers, and nuts of acceptable material.

Certify as specified in Section 106.03(b)3.

1014.3CONSTRUCTION—As shown on the Standard Drawings and as follows:

with concrete. After erection and alignment, use caulking compound to seal openings between metal surfaces and concrete.

damaged, exposing base metal, paint with two coats, according to ASTM A780. Assemble the rail members to grade and the posts normal to grade. Make cuts true, smooth, and free from burrs or ragged edges. Fillet-drill all re-entrant cuts, before cutting. As indicated, provide slotted holes for expansion. The diameter of holes in the posts, for anchor bolts, may exceed the nominal bolt diameter up to 50%, with a maximum measurement of 1/2 inch greater than the nominal bolt diameter. Place joints, as indicated. At bend areas, do not vary the diameter of rail tubes by more than 5% of the outside diameter when rail tubes are bent to the radii indicated.

1014.4MEASUREMENT AND PAYMENT—Linear Foot

Measured from center-to-center of end posts. The Department will not deduct gaps at lighting pole foundations.