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TYPE <br />SHALL BE <br />III � IIb i iiri �I �Y ''�iV A JI nes As <br />DESCRIPTION SPECIFIED <br />Top moldboard angle is to be 2" x 3" x 3/8" A36 steel. <br />Bottom moldboard angle is to be 4" x 4" x 3/4" A36 steel. <br />Bottom moldboard angle is to have 11/16" holes punched to match hole <br />pattern of cutting edge. <br />There shall be 1/2" thick gussets welded on each end of the inside of the <br />angle and midway between all punched holes. <br />Spring support/attachment plates are V A36 steel with 3 holes for <br />attaching compression spring arms at moldboard pitch settings of either <br />20, 10 or 5 degrees. <br />Cutting edge shall be 5/8" x 8" blade made from 1080 steel with a <br />Rockwell `B" hardness of 93-100. The blade shall have standard <br />AASHO hole spacing and is to be top punched 1-1/2" from the top edge <br />to the center of the bolt. <br />Cutting edge is to be attached with 5/8" x 2-1/2" grade 8 plow bolts <br />Plow semi -circle is to be fabricated from 3-1/2" x 3-1/2" x 1/2" A36 hot <br />rolled angle. <br />Two 1" x 3" x 5" positive stops are to be welded to semi -circle and set to <br />allow moldboard to swing 35 degrees in either direction. <br />The push frame is to be 4" x 4" x 3/8" A36 wall square tubing 84" in <br />length. This tubing is to have eight 4" x 4-1/2" x %" A36 attaching ears, <br />which are to form a four -point pivot to affix the moldboard onto the push <br />frame attached with four 1-1/4" stress proof plated pins. <br />There are to be two jack support channels 8" x 18" A36 steel which have <br />six 3/4" holes for mounting various optional shoe assemblies. <br />There shall be two compression trip assemblies consisting of three <br />pieces: 1/z" x 3-1/2" A36 steel mechanical slide, with a 5-5/16" O.D. x <br />23-1/4" free height x 21/32" bar diameter spring. <br />The spring is to be made from AISI 5160H steel with a tensile strength of <br />112,000 - 140,000 PSI, rated at 195#/inch of compression. <br />The reversing cylinders shall have a 3" bore x 10" stroke, 2" diameter <br />chrome plated rod. Nitrated cylinders are also acceptable. <br />26 <br />(Circle One) <br />