The Table of Contents for this section is available.
The fabric shall consists of strong rot-proof synthetic fibers formed into a woven fabric or a nonwoven needle punched fabric meeting all applicable requirements of this section.
The fabric shall be free from any treatment or coating which might significantly alter its physical properties before or after installation. The fabric fibers shall contain stabilizers and/or inhibitors to make the filaments resistant to deterioration resulting from ultraviolet or heat exposure. The fabric shall be a pervious sheet of synthetic fibers oriented into a stable network so that the fibers retain their relative position with respect to each other. The edge of the fabric shall be finished to prevent the outer fibers from pulling away from the fabric. The fabric shall be free of defects or flaws which significantly affect its physical and/or filtering properties. Sheets of fabric may be sewn or bonded together with a fungus resistant material. No deviation from any physical requirements will be permitted due to the presence of the seam.
During all periods of shipment and storage, the fabric shall be wrapped in a heavy duty protective covering to protect the fabric from direct sunlight, mud, dust, dirt, and debris. The fabric shall not be exposed to temperatures greater than 140°.
When anchor pins are required, they shall be fabricated of steel, 3/16 inch in diameter, at least 18 inches long, pointed at one end, and have a head that will retain a steel washer having an outside diameter of no less than 1.5 inches.
The fabric shall conform to the requirements of Table 10561 for the applicable Type and Class.
Type 1 fabric shall be non-woven needle punched only.
All minimum strength requirements shown in Table 10561 are minimum average roll values in the weakest principal direction.
The test methods referred to in Table 10561 are defined as follows:
No. Method
1. ASTM D3776 modified to cover the measurement of fabric mass (weight) per unit area, and will be applicable to non-woven fabrics.
2. ASTM D4632 (Grab Test Method).
3. ASTM D3786 (Diaphragm Method).
4. ASTM D3787 modified, steel ball replaced with a 5/16 inch diameter solid steel cylinder with a flat tip chamfered at 1/32" x 45°, centered within the ring clamp.
5. ASTM D4751 (U.S. Standard Sieve).
6. ASTM D4632 (Grab Test Method). Test to be after 500 hours continuous exposure on Xenon arc weatherometer as detailed in ASTM G26 except that 100 hours will be applicable for Type 1 fabric.
7. ASTM G21.
8. ASTM D4491 (Falling Head).
The Contractor shall furnish a Type 1 Certified Mill Test Report, Type 2 Typical Certified Mill Test Report, or Type 4 Certified Test Report for the fabric in accordance with Article 1063; however, the material shall be subject to inspection, test, or rejection by the Engineer at any time.
Fabric will be rejected if more than 72 hours has elapsed between
the time the protective wrapping has been removed and the fabric
is covered up during installation except where the fabric is used
for temporary silt fence.