Terrain category (roughness of terrain).Geographic (or wind) region (A for Victoria).Wind Classification AS 1684 Wind Classification Wind Classification is dependent on : Wind Classification AS 1684 Wind Classification Non-Cyclonic Regions A & B only N1 - W28N 100km/h gust N2 - W33N 120km/h gust N3 - W41N 150km/h gust N4 - W50N 180km/h gust not gable or skillion ends).ĭesign Forces on Buildings Suction (uplift) Construction loads (people, materials) DEAD LOAD (structure) Internal pressure Wind LIVE LOADS (people, furniture etc.) Suction DEAD LOAD (structure) AS 1684 Physical Limitations – Design Forces on Buildings AS1684 can be used to design for Gravity Loads (dead & live) and wind loads. Wall Height AS 1684 Physical Limitations – Wall Height The maximum wall height shall be 3000 mm (floor to ceiling) as measured at common external walls (i.e. AS 1684 Physical Limitations -ĪS 1684 Physical Limitations - Width Width The geometric limits of the span tables often will limit these widths. (between the “pitching points” of the roof, i.e. Plan: Rectangular, square or “L”-shaped Storeys: Single and two storey construction Pitch: 35o max. WHERE CAN AS1684 BE USED? AS 1684 Scope and Limitations The timber framing standard AS 1684 RESIDENTIAL TIMBER-FRAMED CONSTRUCTION Currently you should be using the 2010 Edition.ĪS 1684 TIMBER-FRAMING STANDARD Provides the building industry with procedures that can be used to determine building practice to design or check Construction details, determine member sizes and bracing and fixing requirements for timber framed construction in Non-Cyclonic areas (N1 – N4).ĪS 1684.2 – CD Span Tables AS 1684 TIMBER-FRAMING STANDARD Contains a CD of Span Tables (45 sets in all) for wind zones N1 - N4 for the following timber stress grades: Unseasoned Softwood: F5, F7 Seasoned Softwood: F5, F7, F8 MGP10, MGP12, MGP15 Unseasoned Hardwood: F8, F11, F14, F17 Seasoned Hardwood: F14, F17, F27ĪS 1684 TIMBER-FRAMING STANDARD Each set of Span Tables contains 53 separate design tablesĪS 1684 TIMBER-FRAMING STANDARD Using AS 1684 you should be able to design or check virtually every member in a building constructed using timber framing.ĪS 1684 TIMBER-FRAMED CONSTRUCTION Ridge beam Battens Rafters Hanging beams Ceiling battens Ceiling First floor wall frames Roofing External cladding Floor joists Ceiling battens Flooring Lintel Wall frame Wall stud Internal cladding Floor joists Flooring Bearers Stumps or piles The MGP span tables provided with the Standard have also been amended.Some major changes to this edition include amendments to wall nogging requirements, inclusion of ring beam systems and an Appendix of building practices for engineered wood products (EWPs).This powerpoint presentation is part of a series that has been revised to reflect the requirements of AS 1684 Parts 2 & 3 – 2010 Edition.
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