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 […]

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 […]

TechNote#007 Water Tank Roof Covers

Roy G Harrison,  B.Sc(Eng), MIStructE, MIEAust, CPEng Steven CONRAD Harrison,  B.Tech(Mfg & Mech.), MIIE, gradTIEAust Action Effects In 2002, the loading codes were revised and a philosophy of “Design Actions” introduced specifying criteria and procedures for the structural design of a building or structure in “Limit States” format. The design of a structure for strength […]

TechNote#004 A GUIDE TO THE QUALITATIVE ASSESSMENT OF STRUCTURES

INTRODUCTION This guide is written to assist you (manufacturers/suppliers) with the following: Understanding the limitations of your currently held pre-engineered solutions. Assist you with developing a qualitative understanding of structures so that you can identify problems before they eventuate and seek engineering assistance to resolve them. THE GUIDE Not having a qualitative understanding of the […]

TechNote#002 SIMPLIFIED DESIGN METHOD – DESIGN BY COMPARISON

INTRODUCTION What follows is a simplified method of design and estimating of structural adequacy for use by shed fabricators/suppliers and other manufacturers/suppliers whose products are based on pre-engineered solutions. These enterprises either have existing products that have a history of successful operation, or a range of products that have been demonstrated to be compliant with […]

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 […]

Doubly Pitched, Gable Roof Structures, enclosed buildings and canopies.

Introduction Simple doubly pitched roof. Two structural members and three joints, with two of the joints as supports. The basic connection options for joints is pinned that is having no moment restraint, or fully fixed in which case has moment restraint. If have moment restraint then joint can resist forces which tend to cause rotation […]

Certificates of Independent Technical Expert

WARNING: You cannot legitimately get a Certificate of an Independent Technical Expert (Regulation 88), unless you already have engineering/technical calculations or some other form of certification (or documented evidence-of-suitability). Also note that the South Australian Development Application fees typically cover the cost of council sending engineering design out for review and certification by an independent […]