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Home / DOT Specifications / Virginia / Road and Bridge Specifications / 224
Division II — Materials

224Castings

VA · 2020 Standard Specifications✓ Full text on BuildSpecBook pages 250–250 Save this section

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SECTION 224—CASTINGS

224.01 Description

These specifications cover items cast from metal to a specific design in a manufacturing plant.

224.02 Materials

All casting suppliers/manufacturers shall have an approved QA/QC plan on file with the Department. Junction boxes that are to be installed within that portion of the roadway not protected by a guardrail or barrier shall be designed in accordance with AASHTO M306 and M105, Class 35B.

a.Malleable castings shall conform to ASTM A47, Grade 32510.
b.Gray iron castings used in that portion of the roadway not protected by a guardrail or barrier shall conform to AASHTO M306 and M105, Class 35B. All other castings shall conform to AASHTO M105, Class 35B.
c.Ductile iron castings used in that portion of the roadway not protected by a guardrail or barrier shall conform to AASHTO M306. All other ductile iron castings shall conform to ASTM A536, Grade 60-40-18.
d.Steel castings shall conform to the following:
1.Carbon steel shall conform to ASTM A27, Grade 65-35.
2.Chromium alloy steel shall conform to ASTM A296, Grade CA-15.
e.Steel castings for bridges shall conform to ASTM A486, Class 70, or ASTM A27, Grade 70-36.

224.03 Detail Requirements

If castings are supplied from materials conforming to Sections 224.02 (a), (d), and (e), all tolerances and workmanship requirements for castings shall conform to AASHTO M306. If used in that portion of the roadway not protected by a guardrail or barrier, the load testing shall conform to AASHTO M306. When the alternate load test is used, test bars shall be present and fully identifiable with regard to the casting lot. Each casting in a lot must have the same markings as all of the other castings in the lot; if not, each group of castings with the same markings within the original lot, becomes a new lot. 223.02

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Source: Road and Bridge Specifications, 2020 Edition. Pages 250–250 of 1,065. View official source ↗
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