SS223-002020-02.docx
DOCX document 34 KB Posted
- Attached to
- Construction, University Drive Bike Lanes
- Solicitation number
- IFB-114424
- Issued by
- Fairfax County, Virginia
About this file
This is a supplemental specifications document issued by the Virginia Department of Transportation (VDOT) that amends Section 223 regarding steel reinforcement standards for road and bridge construction projects across all districts, effective April 4, 2023. The document establishes material requirements and specifications for various types of steel reinforcement components used in transportation infrastructure, including deformed bars, plain bars, welded wire fabric, structural steel, bar mats, spiral wire, and wire mesh for gabions. Deformed bars must conform to ASTM A615 Grade 40 or 60, or ASTM A706 Grade 60, with longitudinal bars for continuous reinforced hydraulic cement concrete pavement required to be Grade 60. Plain bars and dowels have specified conformance standards, welded wire fabric must meet ASTM A1064 requirements with deformed specifications for continuously reinforced pavement applications, and bar mats must conform to ASTM A184 standards.
Wire mesh for gabions must be constructed from galvanized steel wire with specific dimensional and tensile strength requirements, including a minimum diameter of 0.105 inches (12 gauge) and tensile strength of at least 60,000 pounds per square inch. The mesh must be galvanized in accordance with ASTM A641 Class 3 standards, and when PVC coating is specified, it must be at least 0.015 inches thick and black in color. Rectangular or hexagonal openings in the mesh must not exceed 4.5 inches in linear dimension or 9 square inches in area, and the mesh must be nonraveling, meaning it must resist separation when wire strands are cut. These specifications apply to all projects and districts under VDOT's jurisdiction and establish the material standards contractors must follow for steel reinforcement components in transportation infrastructure work.
View the file
Other files
Show all 49
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
Guidelines: All Proects, All Districts SS223-002020-02 April 4, 2023
VIRGINIA DEPARTMENT OF TRANSPORTATION
2020 ROAD AND BRIDGE SUPPLEMENTAL SPECIFICATIONS
SECTION 223 – STEEL REINFORCEMENT
SECTION 223 – STEEL REINFORCEMENT of the Specifications is amended as follows:
SECTION 223.02(a) – Reinforcement is replaced as follows:
1. Deformed bars shall conform to ASTM A615, Grade 40 or 60; or ASTM A706, Grade 60. Longitudinal bars for continuous reinforced hydraulic cement concrete pavement shall be Grade 60.
2. Plain bars shall conform to ASTM A615, Grade 40 or 60; or ASTM A706, Grade 60, deformation waived. When used as a dowel, material may be a plain bar conforming to the requirements of ASTM A615, Grade 40 or 60, or a plain dowel conforming to the requirements of ASTM A709, Grade 36; or ASTM A706, Grade 60.
3. Welded wire fabric shall conform to ASTM A1064. When used in continuously reinforced hydraulic cement concrete pavement wire fabric shall be deformed, furnished in flat sheets, and shall conform to ASTM A1064, Grade 70.
4. Structural steel shall conform to Section 226.
5. Bar mats shall conform to ASTM A184.
6. Spiral wire shall conform to AASHTO M32 or ASTM A1064.
7. Wire mesh for use in gabions shall be made of galvanized steel wire at least 0.105 inch, 12 gage, in diameter. The tensile strength of the wire shall be at least 60,000 pounds per square inch. Wire mesh shall be galvanized in accordance with ASTM A641, Class 3. When PVC coating is specified, it shall be at least 0.015 inch in thickness and shall be black.
Wire shall be welded to form rectangular openings or twisted to form hexagonal openings of uniform size. The linear dimension of the openings shall be not more than 4 1/2 inches. The area of the opening shall be not more than 9 square inches. The unit shall be nonraveling. Nonraveling is defined as the ability to resist pulling apart at any of the twists or connections forming the mesh when a single wire strand in a section is cut.
File details come from the government source that posted it. Updated .