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Home / DOT Specifications / Delaware / Standard Specifications for Road & Bridge Construction / 626

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626.1Description.

This work consists of fabricating, providing, and installing metal railings.

626.2Materials.

A.Elastomeric Pads Section 623
B.Steel Section 1039
C.Anchor bolts Section 1039
D.Aluminum Section 1044

626.3Construction.

A.Submittals
1.Prepare and submit working drawings for the metal railings in accordance with Section 105.

Show all details of the railings and of the materials proposed for use. Obtain the engineer’s approval before fabrication.

B.Fabrication
1.Fabricate formed sections of steel rail from mild steel.
2.The Department will allow use of standard steel pipe for pipe sections.
3.Grind or fill exposed welds to provide a smooth surface.
4.Weld aluminum materials using an inert gas-shielded, electric, arc-welding process using no

welding flux in accordance with AWS D1.2 Structural Welding Code - Aluminum.

5.Cut aluminum by means other than torch or flame cutting. Grind smooth rough or sharp

corners.

6.After fabrication, galvanize anchor bolts, nuts, and all steel portions of rails. Leave aluminum

portions ungalvanized. Repair minor abrasions in galvanized surfaces with zinc-rich paint.

C.Packaging, Handling, and Storage.
1.Handle, pack, ship, and store the materials in a manner that will protect the finish from damage.
2.Store railing and incidental parts on blocking, racks, or platforms preventing contact with

ground. Protect the railing and incidental parts from corrosion or damage. Keep the materials free from dirt, oil, grease, and other foreign material. Repair or replace damaged material, as directed by the engineer.

D.Installation.
1.Set anchor bolts and hold in place with a template before pouring concrete. Apply a protective

coating of grease or oil to the parts of anchor bolts exposed above the finished concrete before pouring.

2.Set each post base on a preformed elastomeric pad. Conform the outline of the pad to the base

of the post or base plate. Set posts plumb and set rails parallel to grade, unless otherwise noted in the contract.

3.Place rails after releasing the span falsework. Adjust metal rails before anchoring to ensure

proper matching at abutting joints, correct alignment, and camber throughout the length. Drill holes for field connections with the rails in place.

4.In areas where aluminum alloys come in contact with other metals or concrete, coat with a

dielectric aluminum-impregnated caulking compound, or place a synthetic rubber gasket between the 2 surfaces.

5.Grind smooth rough or sharp corners. Burr anchor bolts and other connecting bolts and

fasteners to prevent loosening after completing erection.

6.Repair areas of damaged coating with the same coating material in accordance with the

manufacturer’s recommendation. Before requesting acceptance of the installation, clean the railing. Use cleaning methods and agents in accordance with the recommendations of the rail manufacturer.

626.4Method of Measurement.

A.The Department will measure metal railings as the number of linear feet fabricated, placed, and

accepted.

626.5Basis of Payment.

A.The Department will pay for accepted quantities at the contract unit price per linear foot. Price

and payment will constitute full compensation for providing, fabricating, and installing all materials, and for repair of any damage due to construction. ITEM DESCRIPTION UNIT 626000 STEEL PEDESTRIAN RAILING LF 626001 STEEL RAILING, TYPE 1 LF 626002 STEEL RAILING, TYPE 2 LF 626010 ALUMINUM PEDESTRIAN RAILING LF 626011 ALUMINUM RAILING, TYPE 1 LF 626012 ALUMINUM RAILING, TYPE 2 LF

Referenced in this section

METAL RAILINGS in other states

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Source: Delaware Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 345–0 of 786. View official source ↗
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625 CONCRETE OVERLAYS
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628 CONCRETE REPAIR AND REHABILITATION

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