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Thread: Decking on sandy soils
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9th November 2011, 12:56 PM #1
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Decking on sandy soils
Hi Guys,
I am preparing to lay a large l shaped deck in my rear garden. My place is relatively close to the beach and sits on sandy soil. Our place is constructed of hebel slabs and sits in an area prone to termites, for those two reasons i have decided it wouldnt be wise to attempt to attached a ledger to the house. I will be digging stumps as close as possible. Was after a bit of advice regarding the recommended depth of stump holes in sandy soil areas, i was also going to use stirrups instead of concreting timber posts directly into the ground.
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10th November 2011, 10:44 PM #2
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You need an engineer if you want the deck to remain level. I think you will be looking at concrete beams not post holes, others may have more qualified advice.
CHRIS
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11th November 2011, 04:00 PM #3
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Not a lot of info so am assuming deck only with no roof. Depth of footing isnt the issue, footprint size is more important. Depth gives volume but no added bearing. provided the sand is not too loose, bell the bottoms of the footings. If the sand is too loose, you will need either big blob footings or go to beam.
Then there is friction piers but we are talking decks not skyscrapers.
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11th November 2011, 04:12 PM #4
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Hi lethal07,
You could consider galvanised screw piers.
cheers
conwood
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