15. Double Top Plates: Lower plate to top of stud - - - Upper plate to lower plate, 12" centers staggered - - - - - - - ends, 2-20d 164 16. Herringbone or Fire Blocking, each 17. Sheathing and Sub-flooring at all Bearings: Iv x 6= - +--+ 2-00 "x 6" -----+----+--+-+-- 3-84 18. Diagonal Sheathingand Sub-flooring: end----+-+++e-7+-e2+7 2-6 2-10d As above, with one additional nail at including intermediate butt and joinings. 19. 20. Ribbons to Studs: “T"yibbons--------+---2" ribbons - - - ----+-+-+- - 2-84 2-164 Joist Anchors across interrupting beams and/or trusses 3/16" x I-1/é" steel, 24" longer than breadth of beam. 8-05. Centers to be 72". WORKMANSHIP AND ERECTION, ROUGH CARPENTRY: a. General Requirements: Lumber shall be accurately saw-cut, fitted Into position, rigidly braced true to plane and plumb and securely nailed, lag screwed or bolted into place in accordance with the drawings. Splicing of framing members shall be only as indicated or approved. Care shall be exercised in framing so that cutting of important members will not be required; such cutting to be done only with the Engineer's approval. The various fastenings shall be adequate to resist the forces produced b. Joists, Rafters, Purlins, etc., shall be set with crown up and “Se dapped over bearings as required for leveling. Shimming will not be permitted. Splices shall be only over bearings and shall be lapped as shown, but lap not less than 4 inches. Headers, trimmers, tail joists shall be increased to equal ‘Strength of surrounding work. c. Wall framing, and not otherwise shown on drawings, shall be framed with Bn x 4" studs spaced 16" on centers with single bottom plate and double top plate. Studs at angles shall be tripled, and at sides of openings shall be doubled. Plate splices shall be lapped a minimum of 8-5