Excavation / Concereter - What to ask for

[Taco]

G'Day All ,

I am looking to build a low level deck to join a shed , patio and bedroom

Structures are 100mm,150mm, 130mm above ground, so all relativity close in height.

The plan is for excavation and concrete poured then deck added on top - but I wasn't sure what I needed to ask for excavation depth wise to the concreters? ie finished slab height

Just looking for some info so I can have an informed discussion with the concreters

[JacobZ]

Hi @Taco,

Thank you for your question. 

Do you have any photos of the space? Some measurements of the area would also be handy. This will help our members to understand what you're trying to achieve and offer advice accordingly. 

Is there a reason you're planning to pour a concrete slab and then cover it with a deck? I'm happy to offer advice if there is, but it's likely not the best solution.

If the plan is to build a deck over the area, there's really no need to have a concrete slab. Realistically it will be much cheaper, better for drainage and better for the deck's longevity to build the deck on concrete piers.

When there is the ability to excavate the area to create the height required for your deck and then build the deck on concrete piers, I'd always advise using concrete piers instead of a slab.

Allow me to tag @Nailbag, @Dave-1 and @Jewelleryrescue for their thoughts.

Jacob

[Dave-1]

Good Evening @Taco 

I was wondering if you can supply a few pictures of the area you are describing. I am like @JacobZ in my preference to not build a deck on a slab. For me its Mainly drainage reasons but also you are digging a hole and putting concrete money into it

You might still need to escavate the area a little but nowhere near what you would if you went down the path of a concrete slab and deck height.

If you really want the concrete I would suggest to consider drainage installed before the slab goes in, the fall of the concrete should be away from the house (tho that may be an issue with you having three structures next to it) and also some conduits installed for electrical work that you may do in the future (small cost so you have peace of mind down the track)

Dave