Building Standards; Getting It Right!
Re: Protecting your Slab522
Mar 20, 2019 3:26 pm
Home owners more interested in spending money on pendant lights and scented candles rather than efficient drainage.
I really think the cost of house construction does not make sense at all.
A typical slab itself is like what 10-15k with builders margin.
So how much does slab contractor really take home per slab?
I can understand why slab work can be so bad sometimes and care factor almost zero in some cases.
I think think the industry needs to build "fortress" like slab for every house they build. LOL
Re: Protecting your Slab523
Mar 20, 2019 3:43 pm
Which mine does, straight into drains by the builder and their plumber. Thanks.
I have seen lots of paving done correctly according to the Standards and codes initially and the paving slope tips water over the edge of the paving onto reactive ground.This causes the ground to swell and lift the edge of the paving causing reverse slope which then dumps water against the house and then the house slab heaves.
This is the problem with an out of date, slow to change standard.The best method is paving that collects the rain that fails on it and then channels it into drains that are properly plumbed into the storm water system by a registered plumber.
I have recently seen paving with a swale or channel built into the paving up against the garden side and the drains are installed along the swale.This stops water overflowing onto the ground or lawn and increases the chance of a protective pavement.
Re: Protecting your Slab526
Mar 20, 2019 11:44 pm
One of the best protection you can get for your slab and footings from water is by adding RadMyx (https://www.radcrete.com.au/product/rad ... erproofing) into concrete during the pour - it will waterproof your slab and footings for life.
https://www.radcrete.com.au/product/rad ... erproofing
It doesn't cost a fortune, too (and only adds around $10 or per cube).
You can use it to for the retaining walls, too.
Re: Protecting your Slab527
Jul 06, 2019 4:30 pm
I am building on shale/rock with an M grade slab in Sydney and have a pool that’s 1100mm from the house.
Is there still a risk of slab heave? As I am currently planning the concreting around the pool and am wondering whether drainage is required between the pool and house. We are either doing concrete and tiles or pavers and white pebbles.
Re: Protecting your Slab528
Jul 06, 2019 5:36 pm
no unlikely with that soil profile but you need an engineer to calculate if there is an angle of repose issue.The concrete pavement should drain all the water it catches into the stormwater system which should be done by a plumber and not the concreter.
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