It is aligned with asnzs 1170 structural design actions, and is referenced in acceptable solution for building code clause e2 external moisture, e2as1. This balustrade system is for use on open timber slated or concrete decks. They are designed to be suitable for high wind zones, as per nzs 3604. In such cases, employing an engineer to assess the site conditions may be a more costeffective design option. In very high and extra high wind zones, it is worth considering. Design tables but not design wind speed include a local pressure factor of 1. Nzs 3604 timber framed buildings or be as per specific. Wind zones battens when fixed in accordance with metrotile roofing systems specifications the cf shingle tile is suitable for use in all nzs 3604 wind zones, up to, and including extra high.
For nzs 3604 designs quoting a wind zone, use the new nail pattern guide. Scyon axon panel is suitable for use in all new zealand wind zones up to and including eh as defined in nzs 3604. In some situations, the wind zone classifications may under or overestimate the site wind speed. Wellington city corrosion zone wellington city council. The project aimed to see if the calculation of wind zones in accordance with nzs 3604. It is adapted and revised from branz study report 168 2007 the engineering basis of nzs 3604.
Click here to link to auckland council gsi wind zone viewer. Branz search and locate tool the branz digital helpline, a useful directory of building and construction information in new zealand. 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. Corrosion zones relate to the severity of exposure to winddriven salt, with b being low risk. Wind zones and nzs 3604 often wind determines the bracing requirement for timberframed buildings. Asnzs 2208 new zealand standards for safety glass manufacturing. Nzs 3604 is used to design most homes and other lowrise timberframed buildings in new zealand. Learn about enabling javascript this website is best viewed on a newer browser than the. When applying for a building consent, the wind zone in which a structure is located determines structural requirements new zealand building. By alide elkink, freelance technical writer, wellington design right f oundations and walls of timberframed buildings must be braced to resist the. Use nzs 3604 for structure and e2as1 for the roof and wall claddings. Building and construction professionals can also call the branz helpline 0800 80 80 85 for advice.
Building regulations new zealand building code nzbc 3. Partner provides this helpful wind zone map of the united states. Three exposure zones zone b, zone c and zone d are shown on a map of the north and south islands in figure 4. Generally, a pile foundation must be in good condition to properly support the structure. We walk through how to find the correct wind zone for a site using nzs. Nzs 3604 is new zealands most soughtafter standard. The wind zone can now be applied to calculate the wind bracing demand from nzs 3604. Click the pancake on the web site to turn on wind zones.
Porirua city council provides local government related services within porirua city, including local roads, footpaths, water supplies, sewerage system, landfills,parks, sportsfields, recreation. In nzs 3604 very high building wind zones, battens are to be secured using 2 x 90 x 3. Special requirements for incorporating different types of cavity battens as alternative solutions have been included. In nzs 3604 very high building wind zones, 150 x 25mm battens are. This must be done in low, medium and high nzs 3604 building wind zones. Improvements to the new zealand component of the wind loadings standard asnzs 1170. Zealand standard for timberframed buildings nzs 3604 3. Improvements to the new zealand component of the wind. If you would like to download the maui glass balustrades product brochure for printing or any. Homerab precladding doesnt get fatigued or tear under the wind pressures exerted on it in the long term.
The zones relate to the severity of exposure to wind driven. Select search option for full address, or road etc. Often wind determines the bracing requirement for timberframed buildings. On existing roofs, when fixed to counter battens correctly installed, the hv110 sanitary vent is suitable for use in all nzs 3604 building wind zones up to and including extra high wind zones. This specification deals with rockcote insulated cavity plus render system applied over a 40mm eps sheet substrate. These loads include those from people, wind, earthquakes and snow. Aweshb0012012 wind loading handbook for australia and new zealand background to asnzs 1170. Insulated facade system eps 40mm eps over timber frame general description of worksspecification notes.
This incorporates the extra high wind zone for more exposed building sites. Wind zone map partner engineering and science, inc. These tables give wind bracing demands bum for the subfloor structure and the walls of single and upper floors and the lower of twostoreys. View on information provider website download this resource pdf, 1. Br e b nzs 3604 introduction 1 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. On existing roofs, when fixed to counter battens correctly installed, the hv160 extraction vent is suitable for use in all nzs 3604 building wind zones up to and including extra high wind zones. We walk through how to find the correct wind zone for a site using nzs 3604. For this, it must be no more than 2storeys and a maximum height of 10 m from the lowest ground level to the uppermost portion of. In nzs 3604, very high building wind zones, battens are to be secured using 2 x 90 x 3. Classification of wind zones in nzs 3604 are specific to the site, because the buildings covered by this standard are limited in size. Wind zones battens when fixed in accordance with metrotile roofing systems specifications the cf slate tile is suitable for use in all nzs 3604 wind zones, up to, and including extra high. It is a valuable new tool for anyone wanting sitespecific earthquake and corrosion zone information. Homerab precladding is suitable to withstand wind pressures experienced in all wind zones up to and including very high vh wind zone as specified in nzs 3604. The wind zones defined in nzs 3604 are based on a number of simplifying assumptions, such as wind direction, general topography and shelter.
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, which is available by clicking on this link standards new zealand also offers this standard to be purchased as hard copy or online library subscription. Wind regions wind regions and lee zones are our interpretation of figure 5. Wind zones wind zones are an output from a 2014 research project at branz. When applying for a building consent, the wind zone in which a structure is located determines structural requirements new zealand building code nzbc b1 structure and weather tight requirements nzbc e2 external moisture. The zones relate to the severity of exposure to wind driven salt, with b being low risk, c medium risk and d high risk. The next revision was published in june 1999 and recognised nzs 3604s. The corrosion zones in branz maps are our interpretation of the exposure zones in nzs 3604. Buildings or parts of buildings outside the scope of nzs 3604. Insulated facade system eps 40mm eps over timber frame. Wind zones and nzs 3604 build 1282012 building codehub. It is aligned with as nzs 1170 structural design actions, and is referenced in acceptable solution for building code clause e2 external moisture, e2as1.
Summarised from branzs build magazine, augustseptember 2012. Wind zone codes for porirua city for building codes. It provides methods and details that are used to design many nz timberframed houses and small buildings, including many residential decks. Defines wind zone locations to meet hutt city council environmental consent requirements. A wind zone refers to the wind forces that affect a building as determined in the building standard nzs 3604, 2011. Establishing that the uls pressure is above the very high wind zone of nzs 3604. Porirua wind zones porirua city gis map data porirua. The majority of residential building foundations in new zealand are constructed to comply with building code acceptable solution b1as1, which cites nzs 3604. From nz this website is best viewed with javascript enabled. You can follow nzs 3604 for structure and e2as1 for the roof and wall claddings. E2as1 has been improved to work better with the revised nzs 3604.
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