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First off, I've never worked with concrete except as a kid helping my dad set the swingset in, and some posts under our back porch steps.
I can't find much information on multiple pours of concrete. The consensus is that one monolithic pour is best. But we need 10-11 cu/ft per slab and we're not sure if we can rent a mixer that large. How long do we have to make another pour of concrete? Can we do that much in a wheel barrow? (assuming we don't really stop). Is it easier with a smaller rentable mixer? Everything I've looked at is for house footings and walls and laaarge amounts/expanses of concrete. I just want to know how much time I have between each pour so it doesn't crack all to shit and fall over.
Back story:
Me and my dad recently went in on a Rotary SPOA9 2-post lift (asymmetric lift, so a large part of the vehicle is off to one end). The problem is to install it is that the posts sit right on the cracks for the 3 slabs of concrete in the Quonset hut, so we need to pour some new chunks of concrete. Each of the 3 slabs are 10' wide and 60' long, each have only one crack in them. It was built in the early 60's.
We're going with a 8" thick, 4'x4' slab (might as well go a bit thicker right?, also we don't know how thick the current slabs are or what psi rating and need to make sure it's keyed under or fairly self sustainable at least). Which should be around 10-11 cu/ft.
I just want to make sure that despite my amateur-ness this thing doesn't fall over on us.
ANY tips or information would be appreciated.
I can't find much information on multiple pours of concrete. The consensus is that one monolithic pour is best. But we need 10-11 cu/ft per slab and we're not sure if we can rent a mixer that large. How long do we have to make another pour of concrete? Can we do that much in a wheel barrow? (assuming we don't really stop). Is it easier with a smaller rentable mixer? Everything I've looked at is for house footings and walls and laaarge amounts/expanses of concrete. I just want to know how much time I have between each pour so it doesn't crack all to shit and fall over.
Back story:
Me and my dad recently went in on a Rotary SPOA9 2-post lift (asymmetric lift, so a large part of the vehicle is off to one end). The problem is to install it is that the posts sit right on the cracks for the 3 slabs of concrete in the Quonset hut, so we need to pour some new chunks of concrete. Each of the 3 slabs are 10' wide and 60' long, each have only one crack in them. It was built in the early 60's.
We're going with a 8" thick, 4'x4' slab (might as well go a bit thicker right?, also we don't know how thick the current slabs are or what psi rating and need to make sure it's keyed under or fairly self sustainable at least). Which should be around 10-11 cu/ft.
I just want to make sure that despite my amateur-ness this thing doesn't fall over on us.
ANY tips or information would be appreciated.