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8 answers

First you have to build a sill (a box to contain the concrete) Then you have to find something to bind the concrete (like re-bar, wire, or something that will give it tensile strength.

Then you must purchase the concrete and mix it with stone (that you buy) then add water, When you have added enough water to get the desired pouring consistency, then you need to pour the concrete in batches. This needs to be done at one time, so there are no seams that will cause the slab to have weak points. Do not do it in sections over of a period of days. It should be done in one day.

As the concrete 'cures' it should whetted with a light mist through out the first day so it can dry properly if the weather is hot. If it is too wet it will not cure properly either and should be covered loosely.

You can go to the hardware store and ask how much concrete you will need.

2007-08-18 14:05:14 · answer #1 · answered by t. 4 · 0 4

I hope you are strong enough to move and mix 72 bags of 80lbs bags of cement. I am guessing you will be using 4" It will probably be cheaper and alot less work to have it delivered in a concrete mixer. You will need about 2 yards which will be about $200-250 If you rent a mixer $50 and at $3.50 a bag that will will be over $300 right there. That doesnt include wear and tear and gas to get 72 bags of cement 5800lbs Figure 4 trips in a half ton truck. Work smarter not harder. You will also get a stronger floor because it will take you all day to mix the cement the concrete will start to set before you are done. your best bet will be to make sections but this requires making more forms and more work

2016-03-17 02:05:08 · answer #2 · answered by Lauren 3 · 0 0

it would have helped if you had said what the concrete area was to be used for ..like a base for a shed or a floor in a house ..so i am going to assume it is just an external base and it is above ground ..so first excavate 150mm..6inches in old money ..make sure that you excavate the area 150mm bigger all round for a spread on the edges ..you then fill this area with hardcore ...you will need one and a halve cubic metres ..3tonnes ..level this and consolidate it ..if you can borrow or hire a whacker plate thendo so ...then shutter the area ..use 4 by 2 on edge and peg to prevent movement ..you will then need aprox just over a cubic metre of ready mixed concrete ..just over two tonnes ..this is only a small amount but if you have a freind to give you a hand then he can help to get it level ..the shutters should be level and with a straight edge of timber 12 feet long you can level it by running the straight edge backwards and forewards across the shuttering ..this will flatten the high spots and show you the low parts which you must fill...then you TAMP it ..you start at one end and jump it up and down on the concrete tmoving foreward as you go,..this will bring out the fat in the concrete and give you a nice hard finish ..if the concrete was for a floor in a house then you would need toexcavate an extra 125mm to allow for the polystarine ..this is put on top of the hardcore..then you need a poythene membrane ..and the concrete goes on top of that ..its the law to do it this way in the uk

2007-08-18 22:51:54 · answer #3 · answered by boy boy 7 · 0 1

For a pour that large, it's not advisable to try to mix the concrete by hand, unless you've got a WHOLE LOT of help, - and a power mixer.
There is some skill as well as muscle power required to do this right. - Are you SURE you're up to it?

Purchase the concrete to be delivered at a stated time, and be sure there's access for the truck to get close enough to chute the mix to your form. ("Pumpers" are available, but cost extra).
Have the form ready, the underlying sand/gravel bed leveled and tamped, and any mesh reinforcement in place the day before the truck is to arrive.
Have your screed boards handy.
Have lotsa help on hand to move the concrete into place as it is poured. (This is not easy work. - You must keep up with the pour and keep the mix moving right to the farthest corners.)
As you top up the form use screed boards to level it off.
After it begins to set you have to 'float` it to smooth the surface.
(This is a skilled job.)

2007-08-18 14:56:56 · answer #4 · answered by Irv S 7 · 0 0

If you mean 10'x12' room with 4" concrete tick .
1- must install metal net 11/2" high from floor (put equal piece of brick under it)
2- buy Mix concretee for 120 sf
3- line up the room in 4" up the floor and apply concrete
4- By a straight wood mack smooth surface in concrete (drive softly in top of the concret )
5- By a putty (smooth metal plate) very gentle drive in concrete face to get final smoothness.
6 - watering concrete 2 or 3 time about 2 days after get dry.

2007-08-18 17:20:14 · answer #5 · answered by Anonymous · 0 2

Laugh - sounds like you have the will power, but after reading your answers, maybe the get up and go, has got up and gone. laugh, sorry, but I just had to answer.

Sounds easier to get someone else to do it. I was interested in your answers because we were thinking of doing our base for a garage, I think we'll leave it for someone else to do now - laugh

Good luck with your floor.

2007-08-21 00:46:18 · answer #6 · answered by Curious39 6 · 0 0

mix up cement and aggregate at the the rate of 5-1 or 6-1
add water until runny the use a piece of wood level it of by scaping and tapping.
sorry its very late i,m tired this might help you more.
go to the tips page

http://www.spotmix.co.uk/index.html

2007-08-18 14:10:47 · answer #7 · answered by Anonymous · 0 0

4x10x12 foot floor?

2007-08-18 14:47:03 · answer #8 · answered by Snoonyb 4 · 1 0

carefully

2007-08-18 14:22:04 · answer #9 · answered by Anonymous · 0 0

you have to concrete it... OH u have to use this sticky liquid idk my dad does it its his job boo hoo

2007-08-18 14:00:22 · answer #10 · answered by andrew 2 · 0 2

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