Page 9

OS7000 Zeutschel, 400 dpi, 8 bit, 13,330,932 bytesRivets must completely fill the holes, have full heads concentric with the rivet, and of a height not less than 0.6 the diameter of the rivet, and in full contact with the furnace, and machine driven where practicable. LUMBER. The floor and joist furring will be of native pine. The floor shall be of 3 by 12 plank surfaced on one side to a uniform thickness and spiked to the furring strips with two 60-penny spikes to each plank at each intersection. The furring strips are to be 3 by 6 inches, surfaced one side and bolted to top flange with 3/8-inch bolts spaced about 3 feet centers, staggered. No wheel guards will be used. The handrail will be of steel, consisting of angles latticed together and riveted to truss, as heretofore specified. PAINTING. All structural steel shall be given one coat of graphite paint at the shop and one additional coat of same paint after erection. All surfaces that will be inaccessible after assembling must be painted before the parts are assembled. INSPECTION. The work will be inspected by a representative of the Government while in progress of erection, and must be completed to his satisfaction. EARTH FILL.The earth fill will not be included in bridge contract