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VIC
Joined 8 April 2014
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5 d5 dinsiderinsider posted:
Henley homes

Make sure you include a properly constructed protective concrete path in your budget.

5 d5 dinsiderinsider posted:
Grade A soil - any downsides?

No downside on the engineering, this would be my preferred soil type to build on except may be difficult to keep the watering up for the garden.

5 d5 dinsiderinsider posted:
Another defective house story

Unfortunately you are on some of the most reactive soils in Victoria you must be down Geelong way. Was the house built in 2012 or earlier?

15 d15 dinsiderinsider posted:
Henley homes fixed site cost

No the compaction report won't change but the engineer doing the design may decide that your particular site will require piers, rigid slab or any other footing system they see…

16 d16 dinsiderinsider posted:
Henley homes fixed site cost

We will get at least a H1 or even H2 in that area not a M

19 d19 dinsiderinsider posted:
SLAB PREPARATION (VIC)

Should be removed first, the builder cannot construct a slab with rubble.

19 d19 dinsiderinsider posted:
Melbourne home - slab heave - advice

Yes that's right and I would include tree removal as well.Underpinning is the last resort but only if it is settlement.Once you have one set of floor levels then you…

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20 d20 dinsiderinsider posted:
Melbourne home - slab heave - advice

Myfirst
Screw piles can be the same diameter as bored piers but they rely on end bearing pressure whereas bored piers has the additional benefit of skin friction. This can be…

20 d20 dinsiderinsider posted:
Melbourne home - slab heave - advice

I agree that piering the whole house would be a better way to go here.They do sink if they are not deep enough especially with regards to trees and easements,…

Melbourne home - slab heave - advice
20 d20 dinsiderinsider posted:
Melbourne home - slab heave - advice

From your photos it appears the area is exposed to the elements meanig the soil becomes wet and dry.Considering we are at the end of summer and in a mini…

  ⋅  2
23 d23 dinsiderinsider posted:
Melbourne home - slab heave - advice

JS_Melbourne
Your house was built in a drought just before a wet period which is prime slab heave timing.
The way you have described the cracking with the cracks getting wider in…

23 d23 dinsiderinsider posted:
Hi Everyone from a Geotech

Joker
The forefront of "complying" meaning they are not the worst but don't comply with the Australian Standards?

  ⋅  1
1 month1 monthinsiderinsider posted:
Protecting your Slab

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…

2 months2 monthsinsiderinsider posted:
Cracks in Brick wall. advise please

What area are you in?

2 months2 monthsinsiderinsider posted:
Foundation issue/ Movement

A Geotech company needs to do some soil testing and also to look at your foundations and the material below them to judge whether you need underpinning to support the…

2 months2 monthsinsiderinsider posted:
Foundation issue/ Movement

I am assuming that they are not the same company who will give you recommendations whether you can put a second story on top pf the existing house?

2 months2 monthsinsiderinsider posted:
Foundation issue/ Movement

Did they do a footing probe of the slab and soil test as part of the report ?

2 months2 monthsinsiderinsider posted:
Storm water

Write reply...

Storm water
  ⋅  1
3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

Needs to be drained away.I'm not saying it's impossible but is complicated.I would use a cut off drain into the clay base in front of the excavation with plastic lining…

3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

Yes thanks for the explanation.So the piers are 200mm deep or did you mean 2000mm deep ?

3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

Having piers founded in rock will only leave heave as an issue if it is moderately reactive then that risk is significantly reduced although not quite so much with potential…

3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

What I meant is why give 25mm of settlement if your piers are in natural not fill.Shouldn't that be 50mm of expected ground movement with minor initial settlement and a…

3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

Sometimes the simplest approach is the best
Why not stiffened raft slab on bored piers to rock? rock is relatively shallow
By digging out soil you create an area for water…

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3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

Interesting they gave 25mm settlement even though you are on piers?
And if you are on piers in fill shouldn't that be a Class"P"?
As you say builders won't adapt option 3…

3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

Good post Mark
I like option 3 on screw piles with a void former underneath .They used to use cardboard void formers back in the day but I like the
sound…

  ⋅  1
3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

Sweetswisssteel
Here is 3 Phd's written of the topic with local conditions I have been involved in 2 of them.

3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

It's a heavy read but explains almost everything that happened with the slab heave in Melbourne.

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3 months3 monthsinsiderinsider posted:
Which Slab is Better? Waffle Pod or Raft Concrete Slab???

The reason they are so popular are they are cheaper than stiffened raft.Due to so many failures particularly in the western suburbs engineers have been starting to do hybrid slabs…

  ⋅  1
3 months3 monthsinsiderinsider posted:
Help verifying/understanding my site investigation report

If you are using a soil report form 2007 then you will definitely need a new as the Australian standards have changed since then.
An engineer can use engineering principles to…

  ⋅  1
3 months3 monthsinsiderinsider posted:
Help verifying/understanding my site investigation report

This is an interesting statement form the report considering it is in Clayton Sth
"The slab as recommended above, is designed to act as a whole unit so that it can…

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