Bricks, Masonry, Asphalt and Concrete - Estimate on 30x40 concrete floor
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iamhistory
08-03-06, 04:01 PM
Hey Guys..............
Can you please give me an idea of what the cost would be for someone to do a 30x40 concrete garage floor? I am taking your advice from my previous gararge floor thread and I am hiring it out. So far I've only had one guy call me back and he said that the price would vary depending on how much prep work I did before he got there regarding stone, mesh, drain, etc.
His quote was $700 and the price of the concrete if all he had to do was the floor. He said a 30x40 floor at 5" would be 18 yards of concrete. The concrete company told me that I should estimate a 5" floor at 5.5" b/c of settling and I would need 21 yards for the 30x40 area. They charge $82.00 per yard for 4,000 psi and $79.00 for 3,500 psi. I'd like to use 4,000.
I don't know who to believe or how much money I'll be getting into.
Any input would really help. Thanks in advance everyone.
Can you please give me an idea of what the cost would be for someone to do a 30x40 concrete garage floor? I am taking your advice from my previous gararge floor thread and I am hiring it out. So far I've only had one guy call me back and he said that the price would vary depending on how much prep work I did before he got there regarding stone, mesh, drain, etc.
His quote was $700 and the price of the concrete if all he had to do was the floor. He said a 30x40 floor at 5" would be 18 yards of concrete. The concrete company told me that I should estimate a 5" floor at 5.5" b/c of settling and I would need 21 yards for the 30x40 area. They charge $82.00 per yard for 4,000 psi and $79.00 for 3,500 psi. I'd like to use 4,000.
I don't know who to believe or how much money I'll be getting into.
Any input would really help. Thanks in advance everyone.
Pecos
08-03-06, 06:40 PM
I come up with 18.44 yards at 5" thick. I've never heard of anyone figuring more concrete due to settling. The base should be compacted enough that there will be no settling during the pour. However, I would figure around 20 yards due to waste, and because the grade will rarely be right on the money. If you accidentally graded the stone to average 5.5 inches instead of a true 5, you would be short on concrete. It's always better to have too much as opposed to running short.
Pecos
Pecos
neodave
08-03-06, 08:16 PM
Sounds pretty good to me. Is he going to power float it? It's probably not recommended but I'm a big believer in 'fiber mesh' being added to the concrete. In my area it adds about $5 to a yard. I'd definately spend the extra 3 bucks for a 4000 psi mix. Did he say you buy the concrete? Most contractors frequent a particular Ready Mix. In fact he may get a reduced contractor rate. Not sure if that would be passed down however. The $700 sounds pretty good as long as that's somewhat firm. But I'm no expert on contractor pricing. I'd certainly get a couple other estimates.