Browse Forums General Discussion Re: Digging under house slab 5May 27, 2019 10:13 pm alexp79 Draw a 45 degree line down from the bottom of your footings and if your excavation gets on its way, you would need to involve structural engineer who would provide a design for how you would need to retain your excavation. You must be careful when you say this as it is not the case for sand.You will need to know the depth of the slab and the soil type. Re: Digging under house slab 6May 27, 2019 10:23 pm insider alexp79 Draw a 45 degree line down from the bottom of your footings and if your excavation gets on its way, you would need to involve structural engineer who would provide a design for how you would need to retain your excavation. You must be careful when you say this as it is not the case for sand.You will need to know the depth of the slab and the soil type. Apologies, agree, this approach generally applies for the clay soils. In any case, it is always best to involve professional structural engineer for the advice. Massive excavation near the footings is something which always needs to be double checked. Re: Digging under house slab 8Jun 10, 2019 12:42 pm You will need a building permit if your pool holds more than 300mm of water, it will be deemed a child drowning risk and pool fencing will be required. Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Digging under house slab 9Jun 10, 2019 9:24 pm building-expert You will need a building permit if your pool holds more than 300mm of water, it will be deemed a child drowning risk and pool fencing will be required. Not if its a 'natural pool', it can be classified as a pond and the rules are grey. 300mm Rule only applies to pools and spas apparently. 4 5301 To me, that's what it looks like: poor backfilling and/or compaction. The width is about 1000mm maybe. That conduit in the photo is for the NBN. The water is about… 4 8512 Thanks for your advice. So far i have not noticed any issues with doors and windows. Builder advised they will organise drainers to inspect 2 weeks ago but no further… 7 20608 |