tgladman said...Cassa said...tgladman said...Cassa said...tgladman said...Because wa has a double brick mindset instilled in it by decades of money hungry brick suppliers. This will change over the next decade with energy ratings increasing rapidly and a shift toward greener building driven by legislation.
dmitri said...
i am not complaining about very expensive RE, but
how come they build solid double brick houses in wa when in victoria they build $hity boxes made of ticky tacky and the prices pretty much the same !
that is the weirdest thing about the australian housing that i can't comprehend.
Neither, I think you might find that it might have something to do with the type of land that they build on.
WA- sandy soil
Vic-more clay content than sand.
Negative. Sandy conditions that we have here in Western Australia are some
Of the best conditions for building and construction in the world. Our choice of construction methods aren't
Influenced by soil classification but by reasons outlined in my first post.
Class and Foundation (ground type)
•A - Mostly made up of sand and rock and has very little change when wet.
•S - Slightly reactive clay in the soil with only slight movement due to moisture.
•M - Moderately reactive clay with moderate movement due to moisture.
•H - Highly reactive clay site with High ground movement.
•E - Extremely reactive site with extreme movement due to moisture.
•P - Soft soils, land slip, mine subsidence, etc. Collapsing soils due to moisture and soil structure changes.
During my studies for Builders Regisration ,we were taught that these soil types dictated the reasons for the difference in building methods between WA and Eastern States, (single brick or double brick).
Maybe the teachings for builders registration are wrong
Maybe not
Once you have an established footing, slab or any other foundation for that matter you can build whatever you like on top of it. You could use cardboard if you like. Soil classification and condition has absolutely no dictation over they "type" of construction method used.
Correct- once you have established the footing and TYPE of slab construction you can build on it.
We were held up on the brickwork on a house to be built on the canals in Mandurah 2 yrs ago due to the fact that the supervisor or concretor ,overlooked the fact that it had to have pier and beam style of slab , to accomadate the fact that there was a HIGH CLAY content in the soil.
The slab was removed after the council became involved (due to the owners knowledge of the CORRECT method of slab construction in this type of soil), it was then put in correctly.
The house I have just built in Exmouth , had to have OVERSIZE footings , due to TYPE of soil conditions it was to be built on, an extra 3 cubic metre's of concrete. The swimming pool had to have cantelevered footings DUE TO THE SOIL conditions.
1- Shallows Foundations
Shallow foundations are those founded near to the finished ground surface; generally where the founding depth (Df) is less than the width of the footing and less than 3m. These are not strict rules, but merely guidelines: basically, if surface loading or other surface conditions will affect the bearing capacity of a foundation it is 'shallow'
Shallows foundations are used when surface soils are sufficiently strong and stiff to support the imposed loads; they are generally unsuitable in weak or highly compressible soils, such as poorly-compacted fill, peat, recent lacustrine and alluvial deposits
2- Deep Foundations
Deep foundations are those founding too deeply below the finished ground surface for their base bearing capacity to be affected by surface conditions, this is usually at depths >3 m below finished ground level. Deep foundations can be used to transfer the loading to a deeper, more competent strata at depth if unsuitable soils are present near the surface.
Deep foundations are used when there are weak (“bad”) soils near the surface or when loads are very high, such as very large skyscrapers.
Deep foundations derive their support from deeper soils or bedrock
Common Types of Deep Foundations are :
1. Pile foundations
are relatively long, slender members that transmit foundation loads through soil strata of low bearing capacity to deeper soil or rock strata having a high bearing capacity. They are used when for economic, constructional or soil condition considerations it is desirable to transmit loads to strata beyond the practical reach of shallow foundations. In addition to supporting structures, piles are also used to anchor structures against uplift forces and to assist structures in resisting lateral and overturning forces.
are thick slabs used to tie a group of piles together to support and transmit column loads to the piles.
Hope this clears up your ideas on soil classification,because it does dictate the type of construction.
Well that's my 32 years worth!
) here at the rate 1 million in 3 years anyway.
