1030 Page 5931030 GABIONS
1030.1REQUIREMENTS
Gabions will be supplied in various lengths and heights. The lengths will be multiples (2, 3, or 4) of the horizontal width. The heights will be fractions (1, 1/2, or 1/3) of the horizontal width. The horizontal width will not be less than 36 inches. Gabions will be of uniform width. Gabions will be fabricated so the sides, ends, lid, and diaphragms can be assembled at the construction site into a rectangular basket. Gabions will be of single unit construction. Base, lid, ends, and sides will be either woven into a single unit or one edge of these members connected to the base section of the gabion so strength and flexibility at the point of connection is at least equal to that of the mesh. The gabion will be furnished with diaphragms the same mesh and gauge as the body of the gabions, secured in proper position on the base in such a manner that no additional tying at this juncture will be necessary. The spacing of the diaphragms will be the same as the horizontal width. All perimeter edges of the mesh forming the baskets, including end panels and top of the diaphragms, will be selvedged with selvedge wire. For sound structural integrity, the gabion mesh wires will be wrapped around the selvedge wire with a number of turns necessary to interconnect each of them with the adjacent mesh wire. For multitiered structures, the internal connecting wires will be furnished. The internal connecting wires will meet the same specifications as the wire used in the mesh. Tie wire or connecting wire will securely fasten all edges of the gabion and diaphragms to provide for four internal connecting wires in each cell one-half unit high and eight internal wires in each cell one unit high. The tie wire will meet the same specifications as the wire used in the mesh except that the tie wire may be two gauges smaller. Interlocking fasteners for galvanized gabions will be high tensile 0.120 inch diameter galvanized steel wire measured after galvanizing. The galvanizing will conform to ASTM A641 Class 3 coating. Fasteners will also be in accordance with ASTM A764, Class II, Type C. Interlocking fasteners for PVC coated gabions will be high tensile 0.120 inch diameter stainless steel wire conforming to ASTM A313, Type 302, Class I. The gabions will made of be woven wire mesh. The woven wire mesh will be made of galvanized steel wire having a minimum size of U.S. steel wire gauge #11. The tensile strength of the wire will be 60,000 to 85,000 psi when tested in accordance with ASTM A392. The minimum zinc coating of the wire will be 0.8 oz. per square foot of uncoated wire surface as determined by ASTM A90. The maximum linear dimension of the mesh opening will not exceed 4½ inches and the area of the mesh opening will not exceed 10 square inches. The wire mesh will have elasticity permitting elongation to a minimum of 10% of the length of the section of the mesh without reducing the gauge or tensile strength of individual wires to values less than those for wire one gauge smaller. 1030 Page 594A section of the mesh 6 feet long and not less than 3 feet wide, after the elongation test will withstand a load test of 6,000 pounds applied to an area of 1 square foot in the center of the section. An uncut section of mesh 6 feet long, not less than 3 feet wide, including selvedge bindings, will have the ends securely clamped for 3 feet along the width of the sample. When the width of the sample exceeds 3 feet, the clamps will be placed in the middle and the excess width will fall free on each side of the clamped section. The sample will be subjected to sufficient tension to cause 10% elongation of the section between the clamps. After elongation and while clamped, the section will be subjected to a load applied to an area of 1 square foot in the center of the sample section and perpendicular to the direction of the tension force. The sample will withstand, without rupture of wire or opening of mesh fastening, an actual load of 6,000 pounds. The ram head used in the test will be circular with its edges beveled or rounded to prevent cutting of the wires. The wire mesh will resist pulling apart at the twists or connections forming the mesh when a single wire is cut and the section of mesh then subjected to the load test described in the elasticity test. Each shipment of gabions will be accompanied by a certificate, which states that the material conforms to the requirements. GAUGE TABLE FOR ZINC COATED STEEL WIRE Wire Gauge Equivalent Diameter Designation Inches 9 0.148 10 0.135 11 0.120 11½ 0.113 12 0.105 12½ 0.099 13 0.0915 14 0.080 1040 Page 5951040 STEEL SHEET PILING
1040.1STEEL SHEET PILING
Steel sheet piling will be of the style, dimensions, and mass specified. Steel sheet piling will conform to the requirements of ASTM A 328; ASTM A709, Grade 50; ASTM A690, ASTM A857, or as specified. The piling will be true, straight, and uniform in section. The side of each piece will be furnished with an interlock that is continuous for the full length of the sheet.