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cornellengineers
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cornellengineers

Hendra QLD
Joined 26 August 2013
Senior Member
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8 months8 monthscornellengineerscornellengineers posted:
How to monitor soil moisture to prevent slab heave?

Not us but have a look at this:

Might be just what you are looking for.

  ⋅  2
8 months8 monthscornellengineerscornellengineers posted:
Demolition & removal of waffle pod slab

It's not unusual and not that hard. Why not just get the demolition included in the price for your new build. At least that way the new house builder will…

1 year1 yearcornellengineerscornellengineers posted:
Take lots of photos!

Fingers crossed it all works out ok

1 year1 yearcornellengineerscornellengineers posted:
Take lots of photos!

Just a reminder from a structural engineer - Take lots of photos - every step of the way!
I hope you don't need an engineer or someone else to help you…

Take lots of photos!
  ⋅  3
1 year1 yearcornellengineerscornellengineers posted:
Waffle slabs, slab heave and site drainage

Concrete perimeter slabs, in my opinion, are worthless if the water running off the end of the perimeter slab soaks through the sandy/loamy fill (placed by the builder) down to…

  ⋅  2
1 year1 yearcornellengineerscornellengineers posted:
Waffle slabs, slab heave and site drainage

That's a tricky one to answer because sometimes the damage is blamed by a builder on the house 'settling in' or 'those cracks are minor' or 'those cracks are less…

1 year1 yearcornellengineerscornellengineers posted:
Waffle slabs, slab heave and site drainage

It seems you are doing a great job of understanding the drainage issues that can cause problems with waffle slabs when you design them and that is half the battle.…

  ⋅  2
1 year1 yearcornellengineerscornellengineers posted:
Waffle slabs, slab heave and site drainage

Hi all
I have uploaded my video about waffle slabs, site drainage and slab heave onto Youtube and I'd like the good people of homeone to check it out and provide…

  ⋅  4
1 year1 yearcornellengineerscornellengineers posted:
Metricon Franklin - SA (Moved)

Interesting to see that Metricon built your slab as a raft slab instead of a waffle slab. I'd heard that they don't do raft slabs.

1 year1 yearcornellengineerscornellengineers posted:
Engineered slab, flat plate?

Flat site with poor drainage - that's most sub-division allotments these days (thanks to excessive use of boundary retaining walls).
It's an issue worth thinking about in the design -…

1 year1 yearcornellengineerscornellengineers posted:
Engineered slab, flat plate?

The first thing I asked is "Why is this a Class P site?" and alexp79 has already said that.
Soil testers tend to classify…

  ⋅  1
2 years2 yearscornellengineerscornellengineers posted:
What do you wish you knew before you built?

What do you wish you knew before you had your house built?
Did you find you wished you knew more about:
contracts?
colour selections?
how long it would take?
where you could save…

2 years2 yearscornellengineerscornellengineers posted:
Site costs

If you're struggling with the concept of not connecting a slab to a pier, then you're going to hate this product:

2 years2 yearscornellengineerscornellengineers posted:
Concrete driveway testing - please help

When we test concrete in place we have a couple of tools available:
- Schmidt Hammer tests. A non-destructive way to measure the strength of the concrete surface. They can be…

2 years2 yearscornellengineerscornellengineers posted:
Site costs

Hi annie88
Not sure if I'm missing something. If a soil tester classified the site as H2 (a measure of how much the…

  ⋅  1
3 years3 yearscornellengineerscornellengineers posted:
Slab cut

I agree with bank - get the original engineer to sign off on the cut reinforcement including what steps to take to protect…

3 years3 yearscornellengineerscornellengineers posted:
Has anyone rectified slab heave successfully

I don't want to get your hopes up because every slab heave job is different. And if it is possible it will still be a long hard slog. Get good…

3 years3 yearscornellengineerscornellengineers posted:
How often do you visit your site?

Take lots of photos. When we investigate house movement, apart from plans, soil test and levels it's my next favourite thing to troll through to see how it all went…

  ⋅  2
3 years3 yearscornellengineerscornellengineers posted:
Slab heave on house we built in 2010. What next?

If anyone is interested I just did a video about screw piers for houses on the weekend. I know you guys are all very well informed so I thought you…

  ⋅  1
3 years3 yearscornellengineerscornellengineers posted:
Full renovation of 90’s brick home Brisbane

This service that Resbuild offers might be handy?

3 years3 yearscornellengineerscornellengineers posted:
Engineer needed to approve retaining wall NSW North Shore

Thanks for the recommendation StructuralBIMGuy but I'm not a big fan of timber retaining walls due to long term durability issues. I'd like…

3 years3 yearscornellengineerscornellengineers posted:
Buying overland flow land

It's good that you're aware of these issues so early. Good work.
Overland flow affects what type of building you can build (on stumps vs on slab) so speak to your…

3 years3 yearscornellengineerscornellengineers posted:
Very Steep Block Brisbane - New home Construction

Hi
Have you got a building designer yet or do you intend getting your builder to help with the design?
Did your soil tester say anything about getting a "slope stability"…

3 years3 yearscornellengineerscornellengineers posted:
Rainwater tank - is it worth in Brisbane

This is an old report done for the Australian Government but it's worth reading if you have time. It turned me off having a rainwater tank:
In fact I'm surprised that…

3 years3 yearscornellengineerscornellengineers posted:
Carport to bedroom conversion. Brisbane North private builde

Hi Do
Even before you start talking to builders (unless you're only chasing an indicative price, I'd suggest you have a bit of homework to do first:
Carport slabs don't need to…

4 years4 yearscornellengineerscornellengineers posted:
How to fix this sheet parts coming off from Gyprock ceiling?

Hi
That looks like plasterboard tape - the paper tape placed over the plasterboard joints by the plasterer. https://www.youtube.com/watch?v=UJ17oTw0jkI
If it's loose there could be moisture above…

4 years4 yearscornellengineerscornellengineers posted:
Can beans and slabs be poured at different dates?

Hi sweetswisssteel
I had a look at your previous posts and you\'re already pretty aware of the issues.
Three things to consider. Drainage. Drainage. Drainage.
Keep moisture away from your house.…

4 years4 yearscornellengineerscornellengineers posted:
Change to ceiling height

You might have overall building height limits imposed by council like we do here in Brisbane. Either that or the designer isn't willing to recalculate the wind loads on your…

4 years4 yearscornellengineerscornellengineers posted:
Can beans and slabs be poured at different dates?

Thanks for the feedback Chippy. I've put a lot of effort into the website and I'm glad it's helping people. We haven't got all the answers but we try at…

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Structural Engineer

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Structural design and repairs of houses including drainage and post-disaster

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Joined homeone
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