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 Webincreased 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 ...
NIWA Weather on Twitter: "The strongest high pressure zone (🔴) in …
WebSee New Zealand current wind with our interactive Wind Flow map. Providing your local weather forecast, and the forecast for the surrounding areas, locally and nationally. WebSelect a window that has been tested to NZS 4211:2008 and is labelled as suitable for the relevant wind zone. In May 2014, the wind zones in NZS 4211:2008 were revised to align with the wind zones specified in NZS 3604:2011. This incorporates the extra high wind zone for more exposed building sites. cylinder services inc
Fixing requirements update :: Standards New Zealand
WebFeb 26, 2014 · wind zone. loaded dimension of the wall. roof weight. NZS 3604:2011 Table 8.18 requires: for light roofs in medium or higher wind zones, 2/90 x 3.15 mm end nails … WebSep 14, 2024 · Wind Zones for the Wellington City Urban Areas using NZS3604:2011. 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). 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 ... cylinder service cc