Concrete Estimate

[dankrism]

I need some input on a recent estimate I have received for a concrete floor in my pole barn.
I am pouring a floor in a 40 x60 barn. I am parking a 40,000 lb motorhome on one side of the barn and building an apartment in the remaining half.
I asked for 6 in with wire reinforcement on the RV side and 4 in on the apartment side.
The concrete will need to be pumped in and they charge $1000 for the pumper here to even show up. We need to pump it in due to the wire.
Also there is an outside porch on the building that wraps around one end and I want that to be finished nice and I asked the guy to stamp that portion while the inside floor will be smooth finish with saw cuts. The porch is 40 x8 ft. There will also be an 8 ft apron in front of the RV side.
My one quote so far is $24000.

How does that sound all you concrete guys?? I thought it was a little high and I am now seeking other quotes.
Do you have any suggestions or comments that may help me??
Thanks,
Dan

 

[woodzy]

I can only tell you what I paid. I had about 3500 square feet of 4", 600 square feet or 4" stamped. Could all be trucked in. All they had to do was remove the top 4-5 of soil / grass, compact since it was all pure sand, form and pour.

Cost was $4.25 per square foot for regular and $7.25 for stamped concrete.

 

[dbabicky]

Sounds on the high side !

 

[cj7jeep81]

Yeah, sounds high to me as well. Another option to avoid the pump truck is to use concrete buggies. We just poured my 40x64x6" pad last Saturday. I had vapor barrier down, and wire mesh on top. They used 2 concrete buggies to drive around and dump. They go for about $100 a day each to rent here (I paid less since they rented them from the construction company they work for). Only thing I had to do extra was wire tie all the mesh panels together, so they wouldn't kick out under the buggies. Took a few hours, but was well worth it.

Overall though, that sounds pretty high. I got a bit of a discount on labor, but final bill should be around $7k.

 

[Brad Beam]

You don't need to pump because of the wire. When they are placing the concert they can pull the wire up where it belongs.

 

[Brad Beam]

That would be way high here. Concrete material only would be about3500. Pour and finish labor pric around $1.50-$2.00 sf. Get more prices. I assume that price doesn't include the stone base, wire, or any prep work, and is just a pour and finish job.

 

[brownbagg]

change the wire to fiber and forget the pump

 

[NUTTSGT]

I wonder if the contractor is subbing out the concrete stamping ? That way he can concentrate on finishing 40x60 floor.

Let me ask you this, are they doing this in one pour, a continous pour with the porch and floor being the same height ? Personally, I would not want it to be the same height and same pour. I don't care what they put down, you will get water intrusion under the wall.

 

[2old2soon]

Last month I poured my (much smaller) slab in South Georgia, 3000 PSI concrete with fiber was $110 per yard or about $1.50 per SF. Prep, form & finish was $1.35 per SF. Average prices for the area but after reading some of the numbers above I'm starting to blush, well, a little.

 

[Marcm157]

28 x 34 - footings / foundation walls and 6 inch thick floor except for 2 - 12 inch footings under lift post locations cost me $7100 here in the once great state of New York.

 

[nolimits76]

If I am reading correctly 2400sf at average 5" thick (1/2 4" and half 6") plus 320sf and 480sf at 4" thick for your porch and RV pad.

With 15% waste this is 55yds concrete. Average pice here is $100/yd depending on admixtures, PSI, etc. but this can vary greatly on your location. I've seen remote areas be as much as $150+ yard.

You will have another $1,000+ in wire, bricks to set wire on, tie wire, cure, etc.

Pump trucks normally charge a mobilization fee plus $1.50/yd to pour. Prices include truck and operator and may vary slightly on the yard price.

Keep in mind this all assumes no dirt work, agg backfill, footings, etc. is this a floating slab? Usually you have a thickened edge.

In regards to stamped concrete you will need the forms. They can be rented or purchased and can only be used so many times before they have to be replaced. Even if your guy owns them you will have some costs to contribute to their use and ultimately replacement. Depending on the pattern these can be expensive.

Also we didn't even talk about forms for the slab, porch, etc.

As you can see lots of things to consider and nearly impossible to determine if a good price without lots more detail. Ultimately I would get 2-3 more quotes and use as my comparison.


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[dankrism]

Thanks for your responses. I want to answer some questions and add more details.

The barn is built so we can't maneuver around with buggies but I think the pumper can be avoided if the floor is done in sections cause the overhead door on the RV side is 14 ft.

I think the floor and porch will be one pour---is this bad and should the porch be a different height to avoid water intrusion??

The cost of the concrete alone is $13500 the remainder of the cost is #2 stone 110 yrs -#1 stone 52yds--steel mesh2400 ft--steel rod 700----visqeen, pea gravel

and yes I intend to get at least 2 more quotes with the same specs to compare.

 

[RayBob58]

I paid $3.50/ft2 last month for outside flatwork. No materials other than concrete. Easy pour.

 

[Radix2]

Stamped concrete is double the cost around here - contractor can only work small area at a time due to need to time stamping exactly for best results, added labor, added materials, added labor in cleaning after... concrete work is a bunch of labor vs amaterials as it is, add in stamping, and you can see why it really runs up.

type price here for flat work is $3ish a square foot on sand soils.

 

[joes169]

Thanks for your responses. I want to answer some questions and add more details.

The barn is built so we can't maneuver around with buggies but I think the pumper can be avoided if the floor is done in sections cause the overhead door on the RV side is 14 ft.

I think the floor and porch will be one pour---is this bad and should the porch be a different height to avoid water intrusion??

The cost of the concrete alone is $13500 the remainder of the cost is #2 stone 110 yrs -#1 stone 52yds--steel mesh2400 ft--steel rod 700----visqeen, pea gravel

and yes I intend to get at least 2 more quotes with the same specs to compare.

The concrete material cost is $13,500, or does that include labor? If labor's included, and the contractor has a good reputation, it sounds like you're getting a great deal. If the $13,500 is just for concrete material, you're likely getting hosed, or there's more to the story........

 

[joes169]

Stamped concrete is double the cost around here - contractor can only work small area at a time due to need to time stamping exactly for best results, added labor, added materials, added labor in cleaning after... concrete work is a bunch of labor vs amaterials as it is, add in stamping, and you can see why it really runs up.

type price here for flat work is $3ish a square foot on sand soils.

Even the term "stamped concrete" can be loaded when it comes to cost. Around HERE, a seamless texture (much easier & faster) can run ~$6-9 a sq. foot, where the same patterned stamp might be $12-15 a sq. foot.

There's a reason that contractor's make a site visit and require quite a bit of info before properly bidding a job. There's a ton of "guesses" here on GJ from all over the country, somme that even include "moonlighting" prices. I think it's clear to see why pricing questions rarely go over well on the web.

 

[nolimits76]

In addition the aggregate work, are they also doing the excavation and hauling off spoils? And is there a footing or thickened slab?

FYI you can use buggies in your situation. We just remodeled a college and had to use them for an interior slab pour. There was no other access for a pump truck and definitely not a truck itself so you can pour off the chute. Keep in mind the pump may be hard to get in an existing building anyhow.

Lastly it depends on the quarry but generally speaking you can convert cubic yards to tons by multiplying by a factor of 1.5 to 2. Ask the quarry where you are buying the aggregates and they will give you specifics.

That said, 162yds is really about 240 tons, maybe a little more. We use different size designations here so I'm not familiar with that exact rock but probably $8 or so per ton will cover material. Depending how far from the quarry you are, haul can be a few bucks a ton to $25+ per ton. Trucking is expensive. Probably $15 per ton would cover you. That adds up to $3,000 in material real quick if I'm right.

Just some additional food for thought for you.


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[nolimits76]

I should clarify and say the $15/ton rock price is for haul and material. I've seen it half that for close proximity sites and double far away. Really cant caution you enough on that.


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[matt_i]

You may be getting special treatment due to what you are going to park on it. A contractor sees a big dollar motorcoach they may be quoting a big dollar price.

I would get some more quotes and not advertise the above, simply offer the drawing for the project.

 

[Nathan Cox]

I had my 30x50 pole barn done this past September. Its a floating slab. inside the barn is 5 1/2" thick. I also have a 12' shed down both 50' sides. poured 4" under both of those. No dirt work. Just minor forming, plastic barrier and rebar an chairs. No pump truck. 3000 psi mix. Was $10,000, I think this was slightly high for here but I was in a hurry.

 

[wssix99]

My one quote so far is $24000.

The concrete work shouldn't be the big portion of this. It's probobably heavy machinery, operators for that machinery, and excavation.

Is excavation included in this number? If so, you should DEFINITELY get other quotes. You will find that the cost for that work is highly variable and the price you will be offered is very dependent on the contractor's availability, the particular machines they personally own, and how creative they are in approaching your job.

 

[NUTTSGT]

Thanks for your responses. I want to answer some questions and add more details.

The barn is built so we can't maneuver around with buggies but I think the pumper can be avoided if the floor is done in sections cause the overhead door on the RV side is 14 ft.

I think the floor and porch will be one pour---is this bad and should the porch be a different height to avoid water intrusion??

The cost of the concrete alone is $13500 the remainder of the cost is #2 stone 110 yrs -#1 stone 52yds--steel mesh2400 ft--steel rod 700----visqeen, pea gravel

and yes I intend to get at least 2 more quotes with the same specs to compare.

I would not want it all one level. I'd want the porch slightly lower atleast to prevent water from coming in. Here's another member with an issue right now.

http://garagejournal.com/forum/showthread.php?t=326869