Determination of Pressure Coefficients to Wind Loading Code

Determining the pressure coefficients on the surfaces of a structure using the wind loading code AS1170.2 is not an easy task, as the code has very little coverage of real world buildings, and thus is a relatively deficient code, and little wind loading research is being done to fill in the gaps. So the following […]

Wind Classification Maitland, Yorke Peninsula and Surrounds

Introduction to Wind Speed Classification In Australia we have two wind loading codes AS1170.2 and AS4055. The latter (AS4055) whilst it refers to housing, was created to provide a simplified classification system for use with manufactured structural products (MSP’s). It is neither practical nor economical to use AS1170.2 directly to design a structured product. The […]

Structural Certification is not a view and stamp exercise

Some people seem to think that structural certification merely comprises of viewing drawings of a proposal and then “rubber stamping” the drawings as structurally adequate (eg. they have turned up at the office, and expected we stamp and approve there and then.). Certification seems to be sought to save time and money. The process can […]

Collapse: Household Decks and Balconies are not Designed for Parties

So at the beginning of the year I was working on a project which whilst in the scope of the South Australian development act, and potentially the SA Building rules, it was otherwise beyond the scope of the Building Code of Australia (BCA) and National Construction Code (NCC). This in turn led me to take […]

Wind Speeds and Topography

The wind loading code is based on the flow of fluid parallel to a flat plate. The plate can have roughness, this roughness is measured by roughness length (z0), and converted to terrain category. Appendices to AS1170.2:1989 contained charts for surface roughness length and relationship to terrain category: this information for the newer codes, can […]

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 […]

Structural Design Services in Maitland Yorke Peninsula

Operating from 62 Robert Street, Maitland, Yorke Peninsula, South Australia. We can be found in the following building: Send an email Enquiry, check Price list for services, or the web store for downloadable software and reports. With Roy’s qualifications in building, civil engineering and structural engineering, and Conrad’s qualifications in industrial engineering, manufacturing engineering and mechanical […]

Independent Technical Review

A truly independent technical should not require access to the designers notes and decision making process, and thus should not require any submission of calculations. An independent review should only require access to the specification-of-intent. With a complete specification, it should be possible to send it to the other side of the world and get […]