Author Topic: trucks got a home  (Read 53233 times)

Offline hotrod24

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Re: trucks got a home
« Reply #60 on: September 15, 2009, 04:42:56 pm »
It would be 4 inches, hmm 210 bags if i got a truck i could pour it and finish it myself so that would save some money.
1980 1/2 ton shortbed project...
1978 pontiac grand prix...

Offline frogman68

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Re: trucks got a home
« Reply #61 on: September 15, 2009, 07:21:12 pm »
It would be 4 inches, hmm 210 bags if i got a truck i could pour it and finish it myself so that would save some money.

Check the prices in your area it might be cheaper to have pre mix delivered the bags will be more money

Offline hotrod24

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Re: trucks got a home
« Reply #62 on: September 15, 2009, 10:56:02 pm »
what is half of 21ft?
« Last Edit: September 15, 2009, 11:12:31 pm by hotrod24 »
1980 1/2 ton shortbed project...
1978 pontiac grand prix...

Offline smitty77

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Re: trucks got a home
« Reply #63 on: September 16, 2009, 12:56:33 pm »
what is half of 21ft?
10.5 ft.  Is this for the floor?  If you were to pour it all at once, you will need to score the surface so that the slab will crack uniformly.  And it will crack due to drying shrinkage initially and then from expansions and contraction due to thermal changes.  So if you want to do this in steps, 1/8, 1/4, or 1/2 at a time that will be fine as long as you tie the adjoining slabs together somehow to prevent vertical movement, either with a key-way formed into the side or with slip-fitting steel pins.  It's a lot more formwork this way, but you can re-use forms if you are careful when you strip them after the initial curing period.

Theoretically, you can pour the footings for your retaining walls at the same time as the floor so long as you make the footings are the correct depth and form a keyway in the top of the footing and leave the tie-in rebar exposed.  Ideally the footing should be poured in one shot, but at the very least pour it in 3 steps with each side being continuous.

Lots of possibilities with concrete, and get it delivered unless you have LOTS of help.  Mixing that many bags is quite the undertaking.  Provided he can get clearance around the carport, the driver can place that stuff for you eliminating a lot of back breaking work, which you have already done enough of.

Offline hotrod24

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Re: trucks got a home
« Reply #64 on: September 16, 2009, 01:47:35 pm »
yea this is for my 18x21 going to be garage floor lol but yea i would like to do the biggest i can do in steps 1/4 a square maybe or do half and half of the of the whole thing so i only have to rent the truck twice but it might crack that way
1980 1/2 ton shortbed project...
1978 pontiac grand prix...

Offline Donut

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Re: trucks got a home
« Reply #65 on: September 16, 2009, 05:20:53 pm »
Just for giggles, check around for guys that just do flatwork, for the cost it might be worth it to have them to slam it in.  If the formwork is done, the mesh is in, and all they have to do is pour, screed, and float, might be worth the few extra $.  Saves on your back also!

'73 Chevy K-20 ***SOLD***
350/tbh350/np205
My plow was half price if i took the truck with it.

'86 C-30 dually, 454/tbh400

Offline hotrod24

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Re: trucks got a home
« Reply #66 on: September 16, 2009, 05:45:41 pm »
ok to do just a section for a 9x10.5 for a truck it would be $241.09 that is from SCM i would have to get the truck to come back 4 times so i guess the best thing to do is find someone cheaper like you said or get bags and it would take 48 of them to make the 9x10.5.
1980 1/2 ton shortbed project...
1978 pontiac grand prix...

Offline smitty77

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Re: trucks got a home
« Reply #67 on: September 17, 2009, 06:50:05 am »
yea this is for my 18x21 going to be garage floor lol but yea i would like to do the biggest i can do in steps 1/4 a square maybe or do half and half of the of the whole thing so i only have to rent the truck twice but it might crack that way
It will crack anyway (most likely).  Scoring the surface (or saw cutting it about 1" down after the fact) will help control where it cracks.  For your size slab, I would score at down the middle at a minimum, but scoring it across the middle in the opposite direction would be better still.  When I had the house built, I think the crew scored my basement floor into 6 pieces, and that's roughly a 24x36 slab, making each section 12 x 12.  After 6 years not one crack anywhere else in the floor.

Some tips on curing concrete:
Once you've put a finish on the surface, mist it with a garden hose and cover it with a tarp.  Concrete doesn't dry, it hydrates.  So keep it damp, especially in the first 1-3 days.  If you can watch it for 7 days, that's even better.  Go back every couple of hours and mist it, especially if it's hot.  After day 1, mist it in the morning and evening.  Just generally keep it damp and cool (between 60 and 85 degrees).

Also watch the weather.  Concrete cures a lot slower as the temperature drops, and will all but stop curing at temps below 40 degrees ambient unless you heat it artificially.  In cold weather, concrete suppliers make redi-mix with hot mix water (150+ degrees) and a cold-weather set-accelerating admixture to give the concrete a high-early strength.  With hot temps, concrete cures faster but you run the risk of it drying out if it doesn't have enough water to support the hydration reaction, and you run the risk of it shrinking too fast and cracking.

I would still lean towards delivery if you can as it's a thousand time easier.  Call them back and see if you can speak with a salesman.  Give them a sob story and maybe they'll knock a few bucks off, or waive the delivery charge.  Business is business, and they would rather have yours than lose it to someone else.  It's worth a try.  Up here in mass they're getting close to $100 a yard for concrete, but even at that price, and with a $50 delivery charge, and including some extra (always order more than the measurements call for), I could get enough for your floor for $650 on site (at 4" thick you'll need 4.66 cubic yards, so I would order 6 yards).  If you're short on cash, see if your parents can float you some dough so that you can get this done before winter.  Just a thought.

Offline Donut

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Re: trucks got a home
« Reply #68 on: September 17, 2009, 07:33:16 am »
Bags are an awful lot of work.  Your pour isn't that big. L*W*H/27, unless I figured wrong (been known to happen  ::)) even at 6" thick your only looking at 7 yards. (1 truck).  If you have some good friends (hopefully that have done this) and some beer, it can be done.  It's been a few years since I've done any concrete work, so my reasoning might be a little outdated.

Talk with a local concrete guy, see what they recommend.  Float finish, they should be done in a couple hours.  Power trowel, they'll probably leave 1 guy behind to do it.  Curing, they do make "curing compounds" that can be sprayed on when the finishing is done, or you can "wet" cure like smitty mentioned.
Control joints, can be either floated in or saw cut when the concrete is still green.  They won't keep it from cracking, just try to control where.  IIRC, I think we used to shoot for 10x10 squares for control joints.

Realistically, it can't be that much for doing this.  Around here there are a bunch of garage slabs in that have been waiting for a garage, some for 20 years!
If your even thinking about going larger, do it now.  A few extra feet for parking or storage might help you down the road.  I don't think I've ever heard "gee I wish this garage/carport was smaller".  (OK, maybe once, but he was 80 and all he did was park a Buick in there ;D)

Even though I'm renting this place, I considered a 20x20 slab just to work off of.  Unfortunately too many under ground springs to deal with.

Most of my concrete experience was the form work, commercial/industrial.  Residential might be a whole nother animal.
'73 Chevy K-20 ***SOLD***
350/tbh350/np205
My plow was half price if i took the truck with it.

'86 C-30 dually, 454/tbh400

Offline hotrod24

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Re: trucks got a home
« Reply #69 on: September 17, 2009, 12:34:32 pm »
ok well it was better then i thought it would be for them to bring the truck to me and for me to pour it and finish it would cost $555 not bad last year when i called it was $800 so i think i just need to put cash back ok now i think i am going to use rebar and could i just use a 2x4 to finish it?
1980 1/2 ton shortbed project...
1978 pontiac grand prix...

Offline frogman68

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Re: trucks got a home
« Reply #70 on: September 17, 2009, 12:53:41 pm »
ok well it was better then i thought it would be for them to bring the truck to me and for me to pour it and finish it would cost $555 not bad last year when i called it was $800 so i think i just need to put cash back ok now i think i am going to use rebar and could i just use a 2x4 to finish it?

How many yards sounds like 7 yds at 80 bucks that is not bad at all

Offline hotrod24

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Re: trucks got a home
« Reply #71 on: September 17, 2009, 02:05:26 pm »
It is $100 a yard and what i have read it would have taken 4 yards but to be on the safe side i am using 5 yards
« Last Edit: September 17, 2009, 02:09:24 pm by hotrod24 »
1980 1/2 ton shortbed project...
1978 pontiac grand prix...

Offline Donut

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Re: trucks got a home
« Reply #72 on: September 17, 2009, 02:20:14 pm »
If you've got the rebar, use it.  For that thin a slab, welded wire mesh is commonly used (6"x6" squares).  We used to use cement brick to keep it in the middle of the slab (or you can use a hook to pull it up as you go)

You could use a 2x4 for a finish (screed finish), personal preference for me was to at least put a "bull float" to it.  (bull float, picture a 3' wide trowel with screw in handles for extra reach)
'73 Chevy K-20 ***SOLD***
350/tbh350/np205
My plow was half price if i took the truck with it.

'86 C-30 dually, 454/tbh400

Offline hotrod24

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Re: trucks got a home
« Reply #73 on: September 17, 2009, 03:09:07 pm »
i have some mesh i could use but i dont know could i rent the tools to do this?
1980 1/2 ton shortbed project...
1978 pontiac grand prix...

Offline Donut

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Re: trucks got a home
« Reply #74 on: September 17, 2009, 04:30:41 pm »
You can rent most anything.  Finish is up to you, what would you like?
'73 Chevy K-20 ***SOLD***
350/tbh350/np205
My plow was half price if i took the truck with it.

'86 C-30 dually, 454/tbh400