Purlins are usually fixed by the builder before the roofing installation begins, while. Nzs 4229 also references nzs 4210 however as it has its own specific requirement for control joints refer section 12, shrinkage they will take precedence over nzs 4210. Deviation from plan line under 10 m in length 5 mm 5. Snz hb 3604 provides users with a collection of figures and tables extracted from nzs 3604. Nzs 3604 is used to design most homes and other lowrise timberframed buildings in new zealand. By tom edhouse, branz technical advisor b racing for a timberframed building is required to resist. Metal framing must be designed in accordance with nash 3405 an alternate solution to steel framed buildings and loads specified for domestic and residential activity from table 3. The dpm shall be laid over the entire building platform directly on top of a sand blinding layer, extending to the outside of the edge beam.
It is aligned with as nzs 1170 structural design actions, and is referenced in acceptable solution for building code clause e2 external moisture, e2as1. Branz search and locate tool the branz digital helpline, a useful directory of building and construction information in new zealand. Nzs 3604, with respect to their performance in extreme winds. A heavy roof is defined in nzs 3604 as a roof with a roofing material cladding. An introduction to using nzs 3604 timberframed buildings for structural design on good ground. Residential foundations the canterbury earthquakes provided a demonstration of the effects that a major seismic event can have on building foundations when the ground is poor. Buildings or parts of buildings outside the scope of nzs 3604 must be specifically designed in accordance with nzs 3603 and nzs 4203 as nzs 1170. Where specific design is required, the framing must be of at least equivalent stiffness to the framing provisions of nzs 3604. Reproduced with permission from standards new zealand.
Building your own home house plans new zealand ltd. Springiness is acceptable provided that, unless otherwise specified, floors are built to the criteria in asnzs 1170. A standard represents the thinking on a subject at the time it was written. Retrofit solutions are provided for the roof cladding and roof framing and costs have been estimated for retrofit solutions. The building catalogue has 247 access to pdf versions of over 600 up to date standards. Timberframed buildings new handbook published scoop news. Branz test and evaluation method em3v2 for bracing rating of walls to nzs 3604 from nz price. National design specification nds for wood construction nds 2015. Mentions limited circumstances in which blocking may not be needed. Timber framing must comply with nzs 3604 for buildings or parts of a building within the scope limitations of nzs 3604. It is adapted and revised from branz study report 168 2007 the engineering basis of. Buildings or parts of buildings outside the scope of nzs 3604 must be to a specific design in accordance with nzs 3603 and as nzs 1170.
The standard provides suitable methods and details for the design and construction of the majority of residential and other lowrise timberframed buildings in new zealand. Branz engineering basis o nzs 3604 1 introduction 8 1. Where on the web is new zealand building code document nzs. For buildings where the design wind speeds are less, a multiplier is used to determine the permitted span for the given rafter size and spacing. Readers should note that houses that have been built to. Provides users with a collection of figures and tables extracted from nzs 3604. The wind zone can now be applied to calculate the wind bracing demand from nzs 3604. This map divides the country into two wind regions a and w based on wind speed data from the new zealand metservice.
The launch of the new gib ezybrace systems in june 2011 bought the gib bracing systems in line with nzs 3604. Download handbook for timberframed buildings snz hb 3604. In all cases studs must be at maximum 600 mm centres. If you are following b1as1, this nationallyapplied modification requires you to reinforce all concrete slabs with ductile steel and that you only use details that require. Being a lawabiding citizen at times, i want to consult with document nzs 3604, which outlines all standards applicable to building decking according to council regulations and building codes, before i design my deck and order my timber. Asnzs 3604 1994 withdrawn information technology telecommunications and information exchange between systems use of x.
Gib ezybrace systems 2011 are the only wall bracing systems that are branz appraised appraisal no. James hardie bracing design manual august 2016 new zealand 3. Timberframed buildings selected extracts from nzs 3604. In the extra high wind zone, the flexible underlay must be installed over a rigid underlay complying with nzbc acceptable solution e2as1, table 23. This book is intended as a source document for those who need to know the basis for the engineering decisions underpinning nzs 3604 timberframed buildings. The majority of residential building foundations in new zealand are constructed to comply with building code acceptable solution b1as1, which cites nzs 3604. Snz hb 3604 handbook to nzs 3604 2011 available now. Install modwood decking with a 12 mm minimum gap between the. Download and print the advisory note here pdf 188 kb. This series starts by looking at the information needed for bracing calculations.
As the primary connection between the ground and most buildings, foundations bore the brunt of the earthquakes energy. The regions are too general, however, as land formations can modify and create significant localised variations to wind speeds. Of lintel m light roof heavy roof loaded dimension is defined in figure 1. This document has been reassessed by the committee, and judged to still be up to date. You can follow nzs 3604 for structure and e2as1 for the roof and wall claddings. E2as1 and e2as3 the principal code for veneer materials and workmanship is nzs 4210. Along the remainder of the wall, roof members must be tied to wall studs. This report presents the basis for changing the current branz test and evaluation procedure used to establish bracing ratings. Plywood structural determination of structural properties evaluation methods. Concrete foundation wall reinforcing building performance. It should be noted that nzs 3604 makes no specific provision for control joints and so the requirements of nzs 4210 which is referenced by nzs 3604 should apply. By roger shelton, branz senior structural engineer n ew zealands timberframed building standard, nzs 3604.
Weve assembled a list of resources to help you get started and learn more about the building process. Piles that are misaligned, undermined by subfloor excavations, missing or irregularly spaced or not in full contact with the bearers should be repaired or replaced. The change of loading standards had wideranging implications on the technical basis and all the selection tables in nzs 3604. Selfdrilling screws for the building and construction industries corrosion resistance requirements. Joints in concrete raft floors all concrete slabs require joints to control the effects of concrete shrinkage. Branz is an independent and impartial research, testing, consulting and information company providing services and resources for the building industry.
Note bracing units per metre of element length, in accordance with nzs3604. Nzs 3604 is a core resource for building consent authorities determining compliance with the new zealand building code using the latest version. Npd nelson pine design is a free downloadble software package that can help the designer or engineer size lumberworx products. Its release introduced many changes that all designers and builders need to be familiar with. Kaflex and roflex grommets branz appraisals product. Building on ground with liquefaction potential building. The web is full of documents entitled amendment to nzs 3604, but where is the actual nzs 3604. Lesa raft form is specified in waffle slab share joints in the new dbh code for christchurch under the new earthquake code. Siting of radiocommunications facilities guidelines for fixed, mobile and broadcasting services operating at frequencies above 30 mhz.
Nzs 3604 shows how to construct timberframed buildings up to a maximum of three storeys where there is good ground nzs 3604 is used to design most homes and other lowrise timberframed buildings in new zealand. Bayonet galvanised wire netting must be handled with care to prevent damage to the netting. Access to tis standard as been sponsored b te ministr of usiness innoation and mploment. As nzs 1170 minimum design loads on structures as nzs 1170. The new standard was cited by the new zealand building code clause b1 structure in 2008.
Steps action reference values available 1 determine wind region figure 5. It is adapted and revised from branz study report 168 2007 the engineering basis of nzs 3604. Requirements for clean out openings in masonry construction. Concrete foundation wall reinforcing the height of the wall. Our two main areas of activity are research and investigation in the construction and design of buildings and the environment, and the transfer of knowledge in these areas. Where on the web is new zealand building code document nzs 3604. Free word to pdf creator software download easy pdf creation. The development committee advises it must not be used as a substitute for the full standard, nzs 3604. Beattie abstract the risk of damage to existing ltf buildings due to extreme winds is dependent both on the. When using tiles over a braced wall, designerbuilder must. Status of nzs 3604 in the building control environment. Generally, nzs 3604 1999 doesnt apply to concrete raft floors in determining joint location and type.
Using the software to size your members also gives you the ability to create reports and statements for council. The building system performance branch of mbie has sponsored access to view and print a single downloadable pdf copy of this standard at no charge. Nzs 4229 concrete masonry buildings not requiring specific engineering design nzs 4230 design of reinforced concrete masonry structures nzs 3604 timber framed buildings new zealand building code. The handbook directs users to the appropriate section of the standard for full information. The joints shall be lapped not less than 50mm and sealed with pressure sensitive tape not less than 50mm. When applied by architects, designers, builders, engineers, apprentices, building consent authorities and building industry regulators, nzs 3604 provides these users with a cost. Timber framing must comply with nzs 3604 timber framed buildings or for specific design nzs 3603 timber structure standard. The wire must be hooked to form a u around the end staple to allow the wire to be pulled. Timber grade and treatment shall be in accordance with the requirements set. To avoid nzs 3604 designs getting too out of step with the equivalent specific designs done to as. Jan 20, 2008 being a lawabiding citizen at times, i want to consult with document nzs 3604, which outlines all standards applicable to building decking according to council regulations and building codes, before i design my deck and order my timber. The damp proof membrane dpm material shall be polyethylene sheet in accordance with nzs 3604. These tables give wind bracing demands bum for the subfloor structure and the walls of single and upper floors and the lower of twostoreys.
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