Concrete Quotes

[78C-10]

Hello everyone, I have a 30x40 pole barn here in northern Illinois. I am in the process of getting quotes for a concrete floor. My first quote was $6200 but I would have to buy the 2" foam insualation for under the slab and around the slab. I would also have to rent the skidsteer for the contractor to use. He would be coming from Wisconsin and said it would be cheaper for me to rent a skidsteer versus him having to charge me to bring his skidsteer over the stateline. Something to do with the D.O.T and crossing statelines. It is for 5" of concrete, wire mesh and rebar at the posts, him doing the excavation for the perimeter foam and the under slab foam.

My second quote came today and it is for $8500! Holy ****! But....this includes him buying the foam and installing a simple floor drain(no floor drain in first quote). He is also going to do a frost wall under each overhead door. Is this something that is really needed? He said it has to do with frost heave, I haven't heard of that anywhere around this site or anywhere else.

I was just wondering if the frost wall under the overhead doors was really necessary, this may cut down on costs if it is not necessary. The floor drain isn't a necessity either. Thank you

 

[tdkkart]

1200 sq/ft for $6000 is $5/sqft, which is a pretty standard number around here for a complete pour and finish job.

Frost walls under the doors have always been a given around here, 'course so is a rat trench around the outer edge too, so take that for what it's worth.

 

[NHBandit]

Holy **** ! I know prices vary from location to location but I just barely had a 30x40 slab poured here in Eastern Tennessee last week. Site prep (no foam), concrete guy supplied the skid steer, 2 loads of crushed stone, 4" thick 4000psi concrete and he threw in a 4' apron in front of the slab where my overhead doors are going, 6" thick where the lift posts are going reinforced with rebar and he also put in a 20' piece of rebar with the ground wire attatched and the elbo for the feeder wire all for $4000. So the total measurements of my slab are 34x40. He even spread out the left over stone for me to use as a base for a future driveway at no cost. Here are a few pics. Start to finish. 3 days. The day after it was finished it rained all day and there are no deep puddles so I know it's pretty damn level too. Slight slope to the "apron" so water dosn't run in under the doors in heavy rain. I would keep shopping around if I were you.

 

[dbabicky]

WOW !!! I live in NE wisconsin and have owned my own very successful concrete buisness. I had to sell my half because of medical reasons. We would have charged you $3900.00 for that slab with full 6 bag,4000psi mix and fiber mesh. probally add another $500.00 if you needed the rebar also.(Which you do not need with the fiber mesh)
You do not need the frost walls, just a grade beam around the perimeter. Your grade beam would be about 8"x10". Which would have been included in our price.

 

[CNGsaves]

Are you considering getting pricing to include PEX install for radiant floor heating??

What about including J bolts (at minimum) or stem wall?

Planned reinforcement spots for lift mounts (route PEX for radiant floor also)?

Plumbing for bathroom / water?

 

[dbabicky]

Don't bother with the old fashion J-bolts. They're a pain in the *** for the concrete guy and for the carpenter. 99% of contractors just shoot bolts in the plate when they positon the wall in place. Trust me, if a tornado comes through all your gonna have left is a slab with the plate bolted to it any way, whether you use j-bolts or shoot the bolts in after.

 

[jwith68]

Keep shopping. Pretty sure I could get that slab done (minus foam board) for ~$3500 in central MO.

 

[Falcon67]

$5 sq/ft is an excellent price around here. People get that for flat work like driveways.

 

[KPSquared]

This is another "no point in answering unless you live within 50 miles of the OP" thread.

You are gonna get answers from "you don't need to frost wall" (it will be from a guy in Arizona) and "I got that exact thing done for $20.32 by a bunch of Amish Mexicans".

All these numbers are NOT going to help you at all.

Here, in central Alberta, Canada, I have 4 feet of frost wall all the way around my building. Anything over 760sq.ft. has to have that or engineered grade beam. The frost seriously moves stuff here. My slab cost me around $5000 and that was JUST for the slab. All the foundation work was extra. Foam would have cost me another $1500 or so.

The only price that is relevant for you is from local guys. Don't get to worked up about any of the numbers you get. Talk to local guys who have had work done. Talk to an engineer or look around for how foundations and slabs are poured in your area. Research, research, research until you are confident you are getting the right price for the right job.

 

[Blk88GT]

^^^ I agree 100%.

I WISH concrete work was that cheap here. $5 a sqft, pinch me!

 

[78C-10]

Thank you guys so far for your responses. I am not having PEX put in, the building is already up so no J bolts are needed. I will not be installing a lift or plumbing, other than simple drain the second guy suggested.

 

[Corm]

Hi. KPSquared has it right. Like he said, talk to local folks. If you have a local hardware store or lumber yard, talk to the workers there. Chances are they live local, and have exposure to contractors in the area. They are also in a position to hear comments (both positive and negative) from homeowners doing business with them.

I've done this a few times in the past, and it has worked well for me. Good luck with your project.

Corm

 

[TipsyMcStagger]

I just had a small lean-to (8' x 7') built at my home in FL. 56 sq ft. Initially, I figured I'd have the slab poured and build the rest myself. This job required plans and permits because of the HOA and hurricane code.

The first quote I got for pouring the slab was $1850. That's more than $36 sq ft! (6" above grade, 4" thick, 16" wide, 18" deep footers with #5 rebar, tied to to the existing foundation).

Ultimately, I hired a GC to build the whole thing for $3300 which included the slab, framing, roof and stucco. Kind of funny to see four different sub contractors on site to build a 56 sq ft shed, but they did a great job. Definitely better than I could have done myself. The shed is seriously stronger than the rest of my house!

Tipsy

 

[HunterWare]

"I got that exact thing done for $20.32 by a bunch of Amish Mexicans".

I would humbly like to submit to KPSquared: "pics or it didn't happen"

In all seriousness, he is exactly right.

Regards and best of luck!
Hunter

 

[Mopar-Mahal]

That sounds cheap to me. I just paid $10,300 for a 30x32 mono pour with a 4x32 appron across the front. It is a bit thicker than standard on slab and footers turned out bigger than he wanted due to he had to use a wider bucket than normal to dig, and has a 2foot grid of 1/2 inch rebar. Inspector asked if I was building a multi level parking garage! LOL

 

[volvo]

..
How are most of you being charged for concrete work?...By the concrete cubic yard or finished sq yard/ft area. Which would you prefer if you had a choice?

 

[Falcon67]

Turn key jobs are priced here by the sq/ft. If you order concrete, it's priced by the yard delivered or with a delivery charge separate depending on distance. On a house, typically the foundation is bid/costed as a line item. My super's new house was $22K for the foundation. Flat work - driveways, parking pads, sidewalks - are bid by sq/ft.

>Don't bother with the old fashion J-bolts.
Um - that's not code around here and not to the UBC, which is what most muni's adopt so they don't have to write a code. 12" from corners, no more than 6' apart, 1/2" hot dipped galvanized.

 

[dbabicky]

A typical Garage grade beam slab up here in NE WI. is about $3.00 to$3.50 per SQ/FT. That does not include excavation,fill ect. Just final grading,forming,rebar,(if used,always used in grade beam though), pouring and finishing with the price of the concrete included.

 

[skulldrinker]

When I poured mine I sunk in a few small I-beams around the perimeter close to the walls in case i needed them for anchoring when pulling or stretching body panels and such. Just a thought. I know the shop at work had a hook in the slab when it was poured. It's used for anchoring something to the ground. Same Idea as mine.