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4. All nails shall be commonwire nails . Nailing shall be in accordance with the 1970 Uniform Building Code. 5. Roof sheathing shall be Structural I, Structural II , C-C Exterior or Standard sheathing with exterior glue all sheets shall bear a grade mark of the American Plywood Association. 6. Siding shall be inverted board batten, saw textured , all • heart redwood plywood as manufactured by SIMPSON or equal. F. DOOR The pump house door shall be 3 '-0" x 6 '-8" x 1-3/4" flush type hollow metal door, formed of 18 gauge (minimum )cold rolled , stretcher leveled steel face sheets , turned over and fully covering all vertical edges . The door shall have 16 gauge (minimum) steel stiffeners along edges anc ends , and shall be substantially braced with internal stiffeners so that the face sheets will not buckle. The door shall be factory prepared and reinforced to receive hardware. Door hardware, except hasp, shall be brass with dull bronze U .S. 10 finish. The hardware shall consist of the following items : l pairs fixed pin hinge butts Gov't No. T2127 One passage latch Gov't 161N or 86N One heavy duty galvanized steel safety padlock hasp �,rith case hardened vertical staple and slotted leaf at least 6" long, securely bolted to door and frame. Slotted leaf to cover bolt heads . Furnish one keyed padlock. G. `100D SHAKES 1. Each bundle of wood shakes for roofs shall bear the label of an approved inspection bureau or agency certifying compliance with U.B.C. Standard No. 32-8-70. 2. Shakes may be laid i.n straight or staggered courses . Shakes shall be laid with a side lap of not less than one and one-half inches (11) between joints in adjacent courses . Edges shall be parallel within one inch (1" ) Spacing between shakes shall be not more than one-half inch ( " ) . Each wood shake shall be fastened to the sheathing with two nails only. The starter course at -the eaves shall be doubled and the bottom or first layer may be either fifteen-inch (15" ) or eighteen-inch (18" ) wood shakes or wood shingles . Fifteen- inch (15" ) or eighteen-inch (18" ) shakes may be used for the final course at the ridge. Shakes shall be laid with not less than eighteen-inch (18" ) wide strips of not less than 30-pound felt shingled between each course in such a manner that no felt is exposed to the weather below the shake butts . (50)