High wind zone nz
WebWinds over the southern hemisphere. The arrows show the direction of the average wind (1971–2000). New Zealand’s prevailing winds come from the west, and the country sits just north of the extreme westerlies further … WebIn New Zealand generally there are relatively small variations between summer and winter temperatures, although inland and to the east of the ranges the variation is greater (up to 14°C). Temperatures also drop about 0.7°C for every 100 m of altitude. Sunshine hours are relatively high in areas that are sheltered from the west and most of New ...
High wind zone nz
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WebJun 6, 2013 · When selecting suitable rafters using NZS 3604:2011 Timber-framed buildingsTable 10.1, the default value given is for rafters on a building in the extra high wind zone. 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. To apply the multiplier:
WebMay 8, 2024 · NZS 3604 divides New Zealand into two wind regions (A and W) and several lee zone areas – these are areas where the landforms create localised wind acceleration … The first step is to identify the wind region for the building from NZS 3604:2011 Figure 5.1. This map divides the country into two wind regions – A and W – based on wind speed data from the New Zealand MetService. The regions are too general, however, as land formations can modify and create significant … See more Determine if the site is in a lee zone. These are shown as hatched areas in Figure 5.1. Lee zones may have higher wind speeds. Back to top See more Determine the ground roughness from the two options defined by NZS 3604 paragraph 5.2.3: 1. Urban terrain – more than 10 obstructions … See more Determine the topographic class (T1–T4), from Table 5.2 and Figure 5.2 (see Figure 3). This consists of a number of steps (see Table 5.2): i. If not flat ground, determine if the ground is: 1. a hill – land rises to a crest or high point … See more Determine site exposure from the two options in paragraph 5.2.4: 1. Sheltered – a site surrounded by at least two rows of obstructions that are … See more
WebWind Codes and Wind Zones: 1 Low Wind (L). 2 Medium Wind (M). 3 High Wind (H). 4 Very High Wind (VH).5 Specific Design (zone outside the scope of NZS3604:2011) (SEG). 6 … WebNew Zealand lies in the mid-latitude zone of westerly winds, in the path of an irregular succession of anticyclones, which migrate eastwards every six to seven days. The centres …
Webother lowland location in New Zealand. Gusts over 18 metres/second are experienced in Wellington on average about 150-170 days a year, compared with 90 days in Invercargill, 70 ... The transition zone between high- and low-speed wind flows at these corners is small. Pedestrians crossing this zone encounter, unexpectedly and hence in a ...
WebSuitable with masonry tile, metal tile and profiled metal roof cladding. Can be used on roofs up to and including NZS 3604 ‘Extra High’ wind zones. Covertek 403 requires underlay support (not self-supporting). Will provide temporary weather protection during construction (maximum 7 days roof application), same day coverage recommended. sharp ref 385l bkWebJul 10, 2014 · An effective air seal for lower wind zones can be achieved by close contact of the flashing onto the top edge of the flange. For higher wind zones, a sealant or … porsche 911 aircooledWebMost areas of New Zealand have between 600 and 1600 mm of rainfall, spread throughout the year with a dry period during the summer. Over the northern and central areas of New … porsche 911 997 turbo reviewWebSo what are the wind zones? Low: Wind speeds below 32 metres per second. Medium: 37 metres per second High: 44 metres per second Very high: 50 metres per second Extra high: 55 metres per second Specific design (SD): Over 55 metres per second When your land is being classified, it will be given a wind zone fitting one of those six categories. porsche 911 997 problemsWebincreased at 2 sites – Gisborne and New Plymouth. For the 21 sites with enough data to assess state between 2010 and 2024: Wellington had the highest average daily maximum wind gusts (averaging 65 km/hr from 2010 to 2024), much higher than the second windiest location, Invercargill at 47 km/hr. On average, Kerikeri had the most days with ... porsche 911 amareloWebFeb 1, 2012 · A new wind zone category, extra high, has been added in the revised NZS 3604:2011 Timber-framed buildings, and the amended E2/AS1. The extra high (EH) wind … porsche 911 997 aero kitWebSo what are the wind zones? Low: Wind speeds below 32 metres per second. Medium: 37 metres per second High: 44 metres per second Very high: 50 metres per second Extra high: 55 metres per second Specific design (SD): Over 55 metres per second When your land is being classified, it will be given a wind zone fitting one of those six categories. sharp rejection 6 letters