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Joined 8 April 2014
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2 months2 monthsinsiderinsider posted:
slab photos for your comments please

No the engineer should engage a concrete testing firm to core and test the concrete.The engineer can also perform a schmidt hammer test.

2 months2 monthsinsiderinsider posted:
slab photos for your comments please

Superfly1130
Looks like the concrete hasn't been vibrated during the pour.I would get it tested for strength.

2 months2 monthsinsiderinsider posted:
Has anyone rectified slab heave successfully

Different soil types will have different moisture contents variations but suction variations can be applied across all soils.
The standards does not specify any moisture contents but they allow a…

  ⋅  1
2 months2 monthsinsiderinsider posted:
Has anyone rectified slab heave successfully

Yes I can confirm this happens.
For example if you have a class H2 site classification and the builder doesn't address site drainage during construction
then the soil moisture levels can rise…

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2 months2 monthsinsiderinsider posted:
Screw piles vs bored piers

Yes you can get a D.C.P test done to confirm the bearing capacity of the sand or S.P.T test done.
Often it is a matter of a construction issues for example…

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2 months2 monthsinsiderinsider posted:
Drainage issues on a steep block

Really depends if the water source is surface, subsurface or a natural spring.I would get this investigated first before any design is done so this will require a soil test…

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3 months3 monthsinsiderinsider posted:
H Slab - Screw Piles

The screw piles may be for the angle of repose regarding the sewer line as it may be to deep for conventional bored piers.
This will depend on the depth of…

3 months3 monthsinsiderinsider posted:
Slogged with an unexpected bill at end of build

Why were piers done if it was a "M" ? Class "P" warrants piers. Get hold of the soil test and slab design.

3 months3 monthsinsiderinsider posted:
H1 slab for H2 class soil

I'm in your boat I would rather upgrade the foundations before anything else.
Unfortunately if a geo or engineer calls out an "E" they loss a client so they are very…

3 months3 monthsinsiderinsider posted:
H1 slab for H2 class soil

Yep thats all you can do.I think waffles are ok on "M" or even H2 in normal conditions if the builders just does the right thing.We have also had extreme…

H1 slab for H2 class soil
3 months3 monthsinsiderinsider posted:
H1 slab for H2 class soil

What about during construction as you said your builder did not comply with the drainage standards but your not alone virtually none of them do.

3 months3 monthsinsiderinsider posted:
H1 slab for H2 class soil

Write reply...

H1 slab for H2 class soil
3 months3 monthsinsiderinsider posted:
H1 slab for H2 class soil

."During the build, the ground was built up against the slab with clay and sloped away to storm water drains our builder"
This dose not comply with AS2870.The ground around the…

3 months3 monthsinsiderinsider posted:
H1 slab for H2 class soil

For starter from what you have just said your builder did not comply with AS2870.

5 months5 monthsinsiderinsider posted:
door/ceiling

Need photos inside and out to make any sort of judgement.

5 months5 monthsinsiderinsider posted:
Fibreglass pool with concrete piers

Could be tricky if there is a shallow water table maybe screw piles would be a better option

5 months5 monthsinsiderinsider posted:
H1 slab for H2 class soil

“Same can be done for waffle pod systems. Good practice to use nominal 50mm bedding.”
Thats my point the granular layer under the waffle allows moisture ingress undrer the slab…

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5 months5 monthsinsiderinsider posted:
H1 slab for H2 class soil

Several problems with the waffle that you don't get with Raft slabs
*Granular bedding material (used to be scoria) which allows moisture to spread under the slab.
*The block has to be…

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5 months5 monthsinsiderinsider posted:
Protecting your Slab

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…

5 months5 monthsinsiderinsider posted:
New Developer Land - What is the PVC pipe sticking out

Not always, the sewer easement is usually at the rear and has a round pit.
The stormwater easement usually has a square pit. If your storm water point of discharge…

5 months5 monthsinsiderinsider posted:
New Developer Land - What is the PVC pipe sticking out

Do you mean one of these ? that is storm water

New Developer Land - What is the PVC pipe sticking out
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6 months6 monthsinsiderinsider posted:
Building warranties

Armstrongs creek can have moderately reactive to extremely reactive clays with some of the worst in the country around that area.
Drainage really needs to be done properly for the long…

Building warranties
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8 April 2014

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