Page G-11.pdf
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- OR DOT CRGNSA 100(4), Historic Columbia River Highway State Trail, Mitchell Point Crossing
- Solicitation number
- 69056720B000024
About this file
This document provides specifications for a rockfall protection fabric required for the OR DOT CRGNSA 100(4), Historic Columbia River Highway State Trail, Mitchell Point Crossing project. The fabric must be a steel wire mesh with a minimum tensile strength of 250,000 psi and wire diameter of 0.118 inches. It requires a minimum tensile strength of 10,000 pounds per foot, bearing resistance against puncturing of 40,000 pounds per square foot, and tensile strength of wires of 2,800 pounds. The mesh openings must be able to fit a circle of 2.5 inches in diameter and have a maximum dimension of 6 inches. Zinc/aluminum galvanization of 0.40 ounces per square foot is also specified. Acceptable products include the Geobrugg Tecco G65 wire mesh manufactured by Geobrugg North America, LLC.
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Text version
G-11 DIVISION 700
710.13 Rockfall Protection Elements. (Added Subsection).
(a) Draped Rockfall Protection Fabric. Furnish a steel wire mesh, that is not a cable rope product.
Geobrugg Tecco® G65 wire mesh is an acceptable product.
Identification by brand name is intended to be descriptive, not restrictive, and is intended to indicate the quality and characteristics of a product(s) that will be satisfactory. When a brand name product(s) is not used, list the proposed “equal” product(s) under the Brand Name or Equal Notification Section of the Bid Schedule; and submit documentation showing the proposed “equal” product(s) meets the requirements of this Subsection.
Acceptable products include:
Geobrugg Tecco® G65 wire mesh Manufactured by Geobrugg North America, LLC 22 Centro Algodones Algodones, New Mexico 87001 505-771-4080 www.geobrugg.com
Revised by Amendment A002
Special Contract Requirements Project: OR DOT CRGNSA 100(4), Historic Columbia River Highway State Trail, Mitchell Point Crossing
(1) A homogenous mesh consisting of one type of wire.
(2) A minimum tensile strength of the steel of 250,000 psi.
(3) A minimum individual wire diameter of 0.118 inches.
(4) A minimum tensile strength of the wire mesh of 10,000 pounds per foot.
(5) A minimum bearing resistance against puncturing of the wire mesh of 40,000 pounds per square foot.
(6) A minimum tensile strength of the wire of 2800 pounds meeting ASTM 1007, Carbon Steel Wire for Wire Rope.
(7) A circle with a diameter of 2.5 inches must be able to fit within the mesh opening.
(8) A maximum dimension within the mesh opening of 6 inches.
(9) Zinc/aluminum galvanizing applied to the wire at a minimum weight of 0.40 ounces per square foot.
(10) Except for materials used under Section 656, A a CO-approved oxidized finish produced with the weathering agent specified under Subsection 725.20 (see Subsection 563.04). Use the weathering agent manufacturer, or their authorized application contractor to apply and fully cure the weathering agent for samples and products delivered to the job site.
2020.11.18 09:52:42 -08'00'
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