contacting flat surfaces shall be closed by shaped sponge rubber plugs cemented in place prior to spraying. Refer to "Painting" section for vapor-seal coating. 8-23. TENT FRAMES: a. General Requirements: Contractor shall fabricate and erect at the locations shown all tent frames shown or required for the work. Concrete floor sles, including anchor bolts, for personnel tents, and concrete pliers for refreshment tent posts shall conform to the "Concrete and Form Work" section of these specifications. b. Matertals;: 1. Iumber, not otherwise called for, 2. Plywood shall be "Plyshield EXT-DFPA- 3. Rough Hardware: conform to paragraph B-o2b. UTILITY". Ferrous metal items including bolts, nuts, plates, washers, etc., be hot dipped galvanized. shall shall Nails shall be spiral shank, flat head, 615-T aluminum alloy or approved equal aluminum alloy, or substitute as approved by the Engineer 4. Sereening where required, shall be plastic mesh as specified in paragraph 8-10c preceeding. yard, ' §,. Canvas shall be 12.29 ounces per square dark olive drab, cotton duck conforming to Type III, Table II, of U. S. Army Specification No. 6-342. Canvas for refreshment tents shall have triple sewed seams and hems with 9/16 inch brass grommets and washers spaced 12 inches on centers at the perimeter. Unless otherwise shown, canvas for personnel tents will be furnished by the Government. c. Workmanship: All members shall be accurately cut and fitted, securely fixed and rigidly braced to the true line, plane and plumb, with bolt holes accurate ly drilled. Splicing of members will not be permitted. 8-24. CURTAINS: Canvas curtains stall be provided where indicated at Building No. 200, Location "B". Canvas shall conform to paragraph 8-23 b. preceeding, Seams and lengthwise hems shall be triple sewed and 8-16