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Illinois Urban Manual

Material Specifications

581. METAL

1. SCOPE

This specification covers the quality of steel and aluminum alloys.

2. STRUCTURAL STEEL

Structural steel shall conform to the requirements of ASTM A 36.

High-strength low-alloy structural steel shall conform to ASTM A 242 or A 588.

Carbon steel plates of structural quality to be bent, formed, or shaped cold shall conform the ASTM A 283, Grade C.

Carbon steel sheets of structural quality shall conform to ASTM Standard A 570, Grade D or A 611, Grade D.

Carbon steel strip of structural quality shall conform to ASTM Standard A 570, Grade C.

3. COMMERCIAL OR MERCHANT QUALITY STEEL

Commercial or merchant quality steel shall conform to the requirements of the applicable ASTM listed below:

Product ASTM Standards
Carbon steel bars A 575, Grade M 1015
to Grade M 1031
Carbon steel sheets A 569
Carbon steel strips A 569
Zinc-coated carbon steel sheets A 653 or A 924

 

4. ALUMINUM ALLOY

Aluminum alloy products shall conform to the requirements of the applicable ASTM Standard listed below. Unless otherwise specified, alloy 6061-T6 shall be used.

Product ASTM Standards
Standard Structural Shape B 308
Extruded structural pipe and tube B 429
Extruded bars, rods, shapes and tubes B 221
Drawn seamless tubes B 210
Rolled or cold-finished bars, rods
and wire 		B 211
Sheet and plate B 209

 

5. BOLTS

Steel bolts shall conform to the requirements of ASTM Standard A 307. If high-strength bolts are specified, they shall conform to the requirements of ASTM A 325.

When galvanized or zinc-coated bolts are specified, the zinc coating shall conform to the requirements of ASTM Standard A 153; except that bolts 1/2 inch or less in diameter may be coated with electro-deposited zinc or cadmium coating conforming to the requirements of ASTM Standard B 633, Service Condition SC 3 or ASTM A 165, Type TS, unless otherwise specified.

6. RIVETS

Unless otherwise specified, steel rivets shall conform to the requirements of ASTM Specification A 502, Grade 1. Unless otherwise specified, aluminum alloy rivets shall be Alloy 606-T6 conforming to the requirements of ASTM Standard B 316.

7. WELDING ELECTRODES

Steel welding electrodes shall conform to the requirements of American Welding Society Specification AWS A5.1, "Specification for Mild Steel Covered Arc-Welding Electrodes," except that they shall be uniformly and heavily coated (not washed) and shall be of such a nature that the coating will not chip or peel while being used with the maximum amperage specified by the manufacturer.

Aluminum welding electrodes shall conform to the requirements of American Welding Society Specification AWS A5.10, "Specification for Aluminum and Aluminum-Alloy Welding Rods and Bare Electrodes."

Specification Date 10/98

 

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