5-99 SECTION 507 - RAILINGS
507.01 Description This work shall consist of furnishing all m aterials for, and
construction of, bridge rail, handrail, and barrier mounted bri dge rail in accordance with these specifications and the lines and grades shown on the Plan s.
507.02 Materials Materials shall meet the requirements of the following Sections of
Division 700 — Materials:
Steel Bridge Rail: Structural Steel 713.01 P r e f o r m e d P a d s 713.03 Aluminum Rail: Preformed Pads 713.03 A l u m i n u m R a i l i n g s 716.01 Pipe for Steel Pipe Hand Railing s hall conform to the requireme nts of ASTM A53, Grade A or B.
507.03 Drawings The contractor shall prepare shop detail, erec tion, and other necessary
Working Drawings in accordance with the requirements of Section 105.7, Working Drawings.
507.04 General Anchor bolts or anchor bolt sleeves shall be se t with a template and
shall be securely placed in their final position prior to the p lacement of the embedding concrete. Post anchor assemblies shall be installed to within 3/16 inch of the theoretical horizontal and vertical location. No field drilling will be al lowed to install anchor bolts without approval of the Resident . Post bearing areas shall be dressed smooth and true to grade. Prior to post erection, each rail post location shall b e finished to the theoretical elevation determined from profile grade, cross slope and curb h eight and will not be acceptable until it is within 3/16 inch of the theoretical elevation, as measured at the top of concrete. Preformed pads shall be used to adjust the rail post s for height and alignment. The number of preformed pads supplied shall be 10 percent more than the theoretical minimum number required. After e rection of the railing, the Co ntractor shall clean the whole assembly, to present a neat and uniform appearance.
507.05 Steel Bridge Railing Steel railings shall be fabricated in accordance with the
requirements of Section 504, Structural Steel. When called for on the Plans, railings shall be galvanized and/or coated in accordance with Section 506, Shop A pplied Protective Coating- Steel. Rail bars to be used on a radius of 1,000 feet, or less, shall be curved before the application of any galvanizing and/or coating. Bending toleran ce from theoretical horizontal curvature shall be plus or minus ⅛ inch per yard, no t to exceed ½ inch, total.