628 Structure Structural framing and bracing shall meet the following a no

628 structure structural framing and bracing shall

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6.2.8 Structure Structural framing and bracing shall meet the following: a) no timber frame members shall be less than 100 mm in width ; b) at all corners and intersections, studs shall be not less than 100 mm x 100 mm or 2 members each 50 mm x 100 mm bolted together. The posts should be fixed to the sills or floor beams by dowels or metal cleats; c) intermediate studs shall be not less than 100 mm x 50 mm and spaced at not more than 600 mm; d) the corners of all rooms and intersections shall be braced with timber members not less than 50 mm x 100 mm and shall be jointed to the stud in such a manner as to leave the stud whole; e) the upper sills and wall plates at the outer corners and intersections shall be tied with straps at least 225 mm x 225 mm x 6 mm secured with 4 # 10 mm diameter coach screws not less than 65 mm long. Alternatively, bracing may maybe effected by 50 mm x 100 mm diagonal timber struts in all corners; and
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PCTTS 599: 20XX 114 f) the clear height of a wall shall not be greater than 3 m except where the structural calculations show that the wall framing as designed is adequately supported and can withstand the horizontal loads from wind and earthquake. Figures 4-7 and 4-8 show the framing and bracing arrangement for timber walls. NOTE It is important to have a tight connection between the wall plates and posts 6.2.9 Cladding The cladding of all external walls shall be of approved weatherproof material and shall be nailed securely to each framing member. Where plaster is used as the cladding, it shall consist of not less than two coats applied to metal laths which shall be securely fastened to the weatherproof backing. The metal laths may consist of expanded metal sheets, "Hirib" or other standard materials. Such materials shall be used in accordance with the manufacturer's instructions. The first or scratch coat of plaster shall be not less than 12 mm thick. Interior walls may be covered with standard interior partition boards or with plaster as described above. 6.3 Steel 6.3.1 Steel framing Steel framed structures shall have design input from a professional engineer. Some details of steel framing systems and connections are given in Figures 6-23 to 6-25 ; such structures may utilize masonry blockwork or metal cladding. 6.3.2 Masonry blockwork cladding Masonry walls shall be designed and constructed in accordance with Clause 6.1. The following specific additional requirements shall apply for steel framed buildings: a) the vertical steel shall be anchored to the footing in the normal manner and anchored at the top by welding to the longitudinal beam or fixed to a concrete beam constructed on top of the walls; b) the horizontal reinforcement shall be welded to the web of the columns; if the columns are encased in concrete the reinforcement can be carried to the face of the steel column; c) care must be taken to fix the walls to the steel frames so as to provide lateral continuity to the walls and to prevent the wall from collapsing either under the shaking from an earthquake or from the
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