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TABLE 2306.3.(3) LATH AND PLASTER OR GYPSUM BOARD WOOD FRAMED WALL ASSEMBLIES TYPE OF MATERIAL THICKNESS OF MATERIAL WALL CONSTRUCTION FASTENER SPACING a MAXIMUM (inches) MINIMUM FASTENER SIZE o, a, n,+ 1. Expanded metal or woven wire lath and Portland 7/8" Unblocked 6 No. 11 gage 1 -1/2" long, 7/16" head 16 gage galv. staple, 7/8" cement plaster legs 9 2. Gypsum lath, plain or perforated with vertical joints staggered 3/8" lath and Y:° plaster Unblocked 5 No. 13 gage gals. 1 -1/8" long, 19/64" head, plasterboard nail 3. Gypsum lath, plain or perforated 3/8" lath and 1/2" plaster Unblocked 5 No. 16 gage galv. staple, 1 -1/8" long, 0.120" nail, min. 3/8" head, 1 -1/4 " long Unblocked d 7 5d cooler (1 -5/8" x 0.086 ") or Unblocked 4 Unblocked 7 wallboard 0.120" nail, min. 3/8" head, 1 -1/2 " long No. 16 gage galv. staple, 1 -1/2" Unblocked 4 long Blocked 7 1/2" Blocked 4 Unblocked 8/12 Blocked a 4/16 No. 6-1-1/4" screws 9 Blocked 'e 4/12 Blocked a 8/12 Blocked ° 6/12 4. Gypsum board, gypsum veneer base or water- resistant gypsum backing board Unblocked ° 7 W or cooler (1-7/8" x 0.092") Wallboard 0.120" nail, min. n. 3/8" head, 1 -3/4" long No. 16 gage galv. staple, 1 -1/2" legs, 1 -5/8" long 4 Blocked e 7 4 Base ply -6d cooler (1 -7/8" x 0.092 ") or wallboard 1 -3/4" x 0.120" nail, min. 3/8" head 1 -5/8" 5/8" Blocked a Base ply 9 16 gage gals. Staple 1 -5/8" 16 gage galv. staple Two -ply Face ply 7 Face ply -8d cooler (2 -3/8" x 0.113 ") or wallboard 0.120" nail, min. 3/8" head, 2 -3/8" long No. 15 gage galv. staple, 2-1/4" Ion Unblocked Blocked e 8/12 8/12 No. 6-1-1/4" screws 9 For SI: 1 inch = 25.4 mm, 1 foot = 304 8 mm. 1 pound per foot = 14.5939 N /m. a Applies to fastening at studs, top and bottom plates and blocking. b Alternate fasteners are permitted to be used if their dimensions are not less than the specified dimensions Drywall screws are permitted to substitute for the 5d (1 -5/8 x 0 086 "), and 6d (1 -7/8" x 0 092 ")(cooler) nails listed above, and No 6 1 -114', inch Type S or W screws for 6d (1 -7 /8" x 0 092 ") (cooler) nails. c. For properties of cooler nails, see ASTM C 514. d. Maximum framing spacing of 24 inches on center. e. All edges are blocked, and edge fastening is provided at all supports and all panel edges. f First number denotes fastener spacing at the edges, second number denotes fastener spacing at intermediate framing members. g Screws are Type W or S h. Staples shall have a minimum crown width of 7116 inch, measured outside the legs. and shall be installed with their crowns parallel to the long dimension of the framing members i. Staples for the attachment of gypsum lath and woven -wire lath shall have a minimum crown width of 3/4 inch, measured outside the legs.