517RAILINGS

517.01 Description

517.02 Fabrication

517.03 Materials

517.04 Construction Methods, General

517.05 Steel and Iron Railings

517.06 Aluminum Railings

517.07 Method of Measurement

517.08 Basis of Payment

517.01 Description. This work consists of furnishing, constructing, coating, and

erecting the type of railing specified. This work also consists of providing and galvanizing structural posts, anchors, and connections.

517.02 Fabrication. Fabricate railing according to Item 513. Select a fabricator

that is at least prequalified at level SF. The Department will base final acceptance of fabricated members on the Engineer’s approval that the fabricated items that can be successfully incor porated into the structures. Submit mill test reports for structural steel, steel castings, bronze, and sheet lead certified according to 501.06.

517.03 Materials. Furnish materials conforming to:

Concrete, Class QC 2 ................................ ........... 499, 511 Reinforcing steel ................................ .................. 509, 709 Structural steel ................................ ............................. 513 Preformed fillers (sponge rubber or PVC) ........................ 705.03, 711.28 Steel tubing ................................ ............................. 707.10 Paint ................................ ................................ ............. 708 Metal deep beam rail ................................ ............... 710.06 Ductile iron casings. ................................ ............... 711.13 Aluminum ................................ ............................... 711.20 Timber. ................................ ................................ ... 711.26 Stainless steel fasteners. ................................ .......... 730.10 Pipe ................................ ................................ ......... 748.06 Submit mill test reports for structural steel and aluminum according to 501.06.

517.04 Construction Methods, General. Construct railings as shown on the

plans. Install posts for metal railings normal to the grade line. Install the tops of railings parallel to the grad e line. Remove or release shoring or falsework supporting the superstructure before placing railing that has no expansion joints or that is on the concrete parapet.

517.05 Steel and Iron Railings. Unless specified to paint according to Item 514,

galvanize all parts of steel and iron railings. Erect metal deep beam rail elements according to Item 606.

517.06 Aluminum Railings. Use alloy conforming to 711.20 for aluminum

railings. Give the extreme outer surfaces of cast railing posts a 40 -grit finish. The Contractor is not required to provide a special finish for other portions of railings.