State of Play: 2017/wk40

The daily challenge came to an end on day 67. A daily challenge based on researching and reading would have greater staying power, but it doesn’t produce anything visual to communicate activity. All the production occurs inside the human mind, and makes the mind more knowledgeable. Any case back to random and irregular “state of […]

A Study Tour Wind Loading of Structures

The beginnings (eg. table of contents) of a  guided tour through various aspects of the wind loading of structures. Qualitative Overview Beaufort Windscale Chart The Recent Adelaide Wind Storms Related to Australian Wind Loading Code Design Wind Speeds for South Australia TechNote#006 Internal Pressure Coefficients Industrial/Commercial Buildings Quantitative Tools Wind Loading Risk Assessment Wind Loading BCA Importance Levels […]

The Recent Adelaide Wind Storms Related to Australian Wind Loading Code

Relating the recent Adelaide storms to the Adelaide Metro Wind Speed Map, the simplified wind classification system (AS4055), and our wind loading code (AS1170.2) The map typically classifies sites as either: N1 Vzp = 28 m/s [100.8 km/h] N2 Vzp = 33 m/s [118.8 km/h] N3 Vzp = 41 m/s [147.6 km/h] These commonly used […]

Design Wind Speeds for South Australia

BASIC REGIONAL WIND SPEED Typical Building/Structure V[R] = 45 m/s [162 km/h] mean return period 500 years 5% risk of exceedance for 25 year design life Post Disaster Building/Structure V[R] = 48 m/s [173 km/h] mean return period 2000 years 1.25% risk of exceedance for 25 year design life These wind speeds are typically as […]

TechNote#006 Internal Pressure Coefficients Industrial/Commercial Buildings

{Strictly speaking this is the first technical note I wrote back in 1996, but didn’t start to present such writings as notes until much later.} AS1170.2 Loading code : “Wind loads” is primarily set up for structures that have a single state-of-nature : permanently open to the atmosphere, or permanently sealed from the atmosphere. Many […]