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I'm bringing this one forward - curious what you think it will run us to extend a 20 x 20 sq ft piece of slab in the back of our house for an outdoor living/patio area...wondering what that total cost would come to in HI...
Carrie
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Edited by - carolann r on 07/10/2006 13:35:52
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I have a written quote in hand for a concrete driveway and small sidewalk from a very competent concrete man. He has worked for me and my clients before. The quote is $4 psf.
Your project is smaller and may, to some degree, lack the same economy of scale. Which means you require less than a full truckload of concrete - which costs more per yard due to trucking.
Assume the best and ask questions.
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Well to tell you the truth, we will also be extending the drive along the side of the house to the back area where Tony can have a workshop built. This will help with having only room for one car in the garage and will give us good access to the rear of the property...so I don't know how much we would need then - but you're saying that actually the cost of the cement would probably go down if we had a full load?
Carrie
"The opportunities to reach into the lives of others in an inspiring way arise in countless ways every single day..." Dr. Wayne W. Dyer
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Well, the cost of trucking will be the same for a half load or a full load. It's the gas and driver time. The same is true for hauling cinder or stone.
Of course the labor of forming, steel, pouring and finishing will vary by the size of the finished job.
Our $4 psf work is using a full truck load. Costs for full house slabs will be higher - probably around $10 psf. That involves compacted base course (gravel) and footings. A simple driveway or lanai would be less than a house slab job.
Assume the best and ask questions.
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I just got a $2,166 bid for a 400 sq.ft. and somewhat custom-shaped driveway, including labor and materials.
Aloha,
John S. Rabi, ABR,CM,CRB,FHS,PB,RB
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I must recommend Yamadas Con Ag.My crazy (naive) husband and I decided to pour a 16 x 24 carport slab ourselves and if it wasn't for the yamada guy there all day helping us bustin his butt, we would of had a big big mess. his name is Wes.Tell him Thank you again from us if you run into him.
Also the concrete guys that did our foundation slab (the ones who made it look so easy) will only use Yamadas.
Also I've had a couple of earthquakes hit my house so that you think a car just crashed into it and I don't have any cracks yet.
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One consideration that I've heard with concrete slab vs. post & pier is that with the latter, it's easier to treat for Formosan ground termites, a pretty serious issue in the lower elevations of the Islands. Termites can act so quickly that the findings in a termite inspection that's done during the inspection period of a house transaction is only good for something like two weeks to a month! Oh, and concrete doesn't stop termites.
Les C
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But if we have no structure on top of it, it shouldn't matter. Of course, our house is already on slab. Good to keep up the termite contract though, for sure! We're having the house tented before we move in. Just glad it's only 5 years old.
Carrie
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West Hawaii Concrete quoted me $141 per cubic yard to bring in 3000# concrete (that is a type of concrete not the weight of it) to my neighborhood, but we are over near Laupahoehoe and pretty far away from just about anything. So ninety feet of driveway plus a carport pad would run about $2,115 just for the concrete. Not including any gravel under the concrete (usually 6" deep and compacted) or a moisture barrier or concrete forms or etc. etc. Also remember when calculating the amount of concrete you will need that a 4" thick concrete slab has much thicker edges to keep them from breaking.
Folks have started using concrete for kitchen countertops lately, too. Maybe you could do your carport and kitchen countertops at the same time?
A hui hou!
Cathy
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Kurt Wilson
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When weighing the pros and cons of post and pier verses slab, you might also consider potential remedies when something goes wrong. I have a small post and pier ohana in the back which, over the years and due in part to earth movement I'm sure, had begun to sag a bit. It was a simple matter to crawl under, jack it up, add a little here and take a little there. The house, on the other hand, is on slab. Either the original pour was the worst I've ever seen, or that same earth movement really did a number on it, or both. In the 100 square foot den, for instance, the elevation difference from wall to wall was a full inch and a half. Not so simple as a hydraulic jack and some 4x4s; this is one mean and nasty repair. I've heard it said there are two kinds of concrete, that which is cracked and that which is gonna. When the dream house gets built, it's gonna be on post and pier
