Anyone in the concrete industry?

[dullbird]

Is there anyone on here that could possibly give me some ball park figures on how much it would cost to lay a slab for something like.....50 square meters

Assuming the prep work was already done. so just for the slab?


and how deep would a slab need to be to have a garage and workshop put on it?

[alien]

Sorry I only cart the raw product to the concrete plants.
Not really any help though.

When we did our shed the local concreter lent us his boards ect to box with.
We then paid him just to do the pour itself.
Saved a few $$ doing it this way.

Don't forget to build in a drive over pit :p

Cheers.

[solmanic]

I've always used $120 per cubic metre as a rough guide...

50m2 = 5m3 (assuming a 100mm thick slab) = $600-ish cost for the concrete + reo + laying.

2007 ArchiCentre cost guide says a concrete driveway, including preparation, is between $50 & $68 per m2 = $2500 laid. We have been told by our QS that they are using 2007 construction figures again because of price deflation in the industry.

[THE BOOGER]

Lou, regards depth of the concrete check with your council as they have standards and will want footings at set depth and spaceing also they inspect before the pour to check that there,s no cheating:angel:
we just did a 8m 5m garage our council wanted footings at 3m spacing and each had to be 300mm x 300mm x 300mm depth concrete was 100mm thick.
we had builders do the lot cost about $4000 for the slab(shed was more)

[dullbird]

I dont know whether i gave the right dimensions lets do it this way 10.5m x 4m so assuming the slab would have to be a tad bigger than the shed.....

Please forgive me I'm not very good with these sorts of things

its just your $600-ish has thrown me off......or where you pricing 600-ish per 5 meter cube?

my theory is if the shed cost 4/5 grand then the concrete has got to be way more than this....

[THE BOOGER]

With our shed the slab and shed are the same size the walls of the shed continue about 3cm past the top of the slab so no water can be blown or splashed under the wall, I think concrete in sydney must be a little more exxy than in Qland.

[tony]

Lue the price of concrete in syd is very xxxxxxxxxy get it laid on a weekday cheaper than weekend, minimum 4 inches in hindsight i would have gone 5' for my slab and as somebody has said the piers have to be deeper so you need to know the design of the shed your puting on it

[dullbird]

Lue the price of concrete in syd is very xxxxxxxxxy get it laid on a weekday cheaper than weekend, minimum 4 inches in hindsight i would have gone 5' for my slab and as somebody has said the piers have to be deeper so you need to know the design of the shed your puting on it

Tony whats the size of your shed and can you give me any idea of cost

PM if you dont want to disclose on here

[RobHay]

My shed cost me $8000 erected. The slab is the same size as the shed.

Cost of the slab which was 7mx6m was $2100, but that was in Queensland and as everyone knows and acknowleges....we are closer to heaven here:angel:

[pop058]

DB,

I build sheds for a living (the steel side of things) in the sunny state. The Bundy price for a slab is approx $60 per sq mt in town (travel will add to the sq mt rate). This includes all materials and labour for a standard shed slab (100 mm thick with all the right piers and edge beams)

HTH

Paul

[dullbird]

DB,

I build sheds for a living (the steel side of things) in the sunny state. The Bundy price for a slab is approx $60 per sq mt in town (travel will add to the sq mt rate). This includes all materials and labour for a standard shed slab (100 mm thick with all the right piers and edge beams)

HTH

Paul

SO why the hell don't you live in Sydney.......godness me what an inconvenience :mad::D

[pop058]

SO why the hell don't you live in Sydney.......godness me what an inconvenience :mad::D

DB,

Nan & I did live in Sydney, thats why we dont anymore.

Paul

[tony]

Lue its 9x15 I think, slab an shed was 21 all up, an another 10 for the

mezine when it goes in then the electicity and plumbing was on top of

that, but its not big enough lue whish it was bigger

[solmanic]

... its just your $600-ish has thrown me off......or where you pricing 600-ish per 5 meter cube?

my theory is if the shed cost 4/5 grand then the concrete has got to be way more than this....

The price I gave was what I reckon the concrete alone would cost - in the truck. Add reinforcing & labour should give you the second figure. However, I missed that it was for a garage, so add extra for footings.

If it's a standard type pre-fab shed, then I would expect the manufacturer to be able to provide you with engineered slab details. You will need these as the council will require an engineering certificate for the footings & frame for approval.

At a guess, I would say you need a 300mm deep x 300mm wide thickening around the edge of the slab and the slab itself could be 100mm thick.

[miky]

Seriously ... if you are not doing the job yourself then you should get several quotes and pick the people who you think will do a good job. Can be very subjective I know, but you can usually get a gut feeling if someone is dodgy.

The best way of course is to see if any one else in your area has had a slab laid and who did they use.

The price of concrete per cubic metre is easy. Phone a few companies and ask the cost delivered etc. Make sure you say it is for a garage floor though cause concrete ant just concrete.

You need council permission?
Depends on the council. If all else fails, ask.

[big harold]

10.5x4M X100mm = 4.2M3 @$150/M =$630
10.5x4M x125mm =5.25M3 @$150/M =$787.50
I have just laid 32M3 for my shed slab. I would go with 125mm thick.
Reo is Approx $120/sheet 2.4Mx6M will need approx 3 sheets.
Crusher Dust, plastic and reo chairs/ties.
My slab was 32Mpa and I paid $170/M3 just for the concrete.
Rough estimate would be whatever you pay for the shed it will be the same for concrete inc labour & reo.
My shed $20K had quotes ranging from $15K to $25K for concrete.

[Redback]

If your not going to be driving a 10ton truck onto the shed floor, do you really need reo if it's 125mm thick and 300mm footings:confused:

Baz.

[kermit31]

My latest driveway was laid without reo , the concrete mix had " fibreglass fibres " mixed in. Driveway has been down for about 6 months now with no cracking. Rgrds

[dullbird]

Seriously ... if you are not doing the job yourself then you should get several quotes and pick the people who you think will do a good job. Can be very subjective I know, but you can usually get a gut feeling if someone is dodgy.

The best way of course is to see if any one else in your area has had a slab laid and who did they use.

The price of concrete per cubic metre is easy. Phone a few companies and ask the cost delivered etc. Make sure you say it is for a garage floor though cause concrete ant just concrete.

You need council permission?
Depends on the council. If all else fails, ask.

well milky we are thinking about doing it ourselves...to try and save some money. i'm not sure just going by the cost of concrete and the cost of the shed that we could afford someone to erect it:(
And I'am asking in here first, of course i'm going to ring companies i'm just trying to get a ball park figure on price so we can prioritise thats all :)

I know I need council permssion that is eveident when you look at all the shed building companies that all say they give you plans etc for submission to council

as for asking people in the area that is easier said then done....we haven't moved there yet so we will know no one:D

[Scouse]

The price of concrete per cubic metre is easy. Phone a few companies and ask the cost delivered etc. Make sure you say it is for a garage floor though cause concrete ant just concrete.

I don't think there's too many options out that way. I think the only supplier for that area is in Pict** (Readymix?).

[roverrescue]

Lou,
Prefab sheds have a standard set of footing / slab drawings usually for "S" class soil.

Depending on your particular council requirements, a site soil test may be required which may/ may not change the footing / slab drawings.

I would be very surprised if steel was not required. Once you have the slab drawings, which will have the necessary reinforcing requirements it is not too hard to calculate materials costings.

If you are working on landies in the shed, may I suggest a nice smooth choppered finish, acid etch and then paint... so much nicer to work on than concrete dust! And the oil just washes off.

Its probably not relevant due to our remoteness, but my new shed in Cooktown (11.5 x 9.5m) near on 110m2 which was on "P" soil in a "W50" wind zone required massive amounts of steel and a 400 x 400 ratwall around the 100 deep slab. Conc up here costs roughly $240 a cube and steel aint cheap so wouldnt compare to Sydney prices.

A final slab suggestion is to put a 50mm deep by 25mm wide rebate around the slab perimeter (just screw some 2x1 to the inside of your form), the cladding stands in the rebate such that vermin etc etc dont gain easy acces through the cladding / slab join.

Anyways, have fun.

Steve.

[jddisco200tdi]

The first thing you need to do is pick your shed and get the architectural/engineering drawings from the shed company.

The ground where the shed is to go needs to be prepared removing topsoil and any soft spots. Maybe run over it with a wacker and fill any low spots with fine crushed rock.

I suggest that you pour the pad footings for the shed yourself which will be approximately 1.5m3.
Pads should be cast 100mm below the slab finished level. Make sure all the pads are at the same level.
Don't forget that door mullins might need a small pad.

Then install the tin shed on the footings bolting the frame down to the pads.

Next step pour the slab (100mm thick allow for 5.5m3) with reinforcement inside the shed. Use some polythene (plastic) sheet under at least the edges of the slab and up the insides of the sheeting.
This then lets the sheeting overhang the top of the slab and provided better waterproofing.
The slab surface should be slightly higher than the surrounding ground.
I would pay to have this layed as its back breaking work barrowing concrete unless you are going to pay more for it to be pumped.
Get plenty of tooled joints/ sawcuts put in to minimise surface cracking.

HTH

John Davies - Defender 110 2.4

[roverrescue]

Personally I disagree on the joints/ cuts (unless you fill them with flex joint)

Dust/ swarf/ wire get forever stuck in the joints, if you have appropriate reo in the slab, any cracks will only be minimal surface cracks and not a problem.

Most sheds with roofs dont get huge heat loads like conc. in the open sun to promote expansion above what the reo will hold.

Each to their own, my first shed had joints put in and I forever more cursed them!!!

The new shed is one lovely flat surface!!! easy to sweep.

Ive heard of the pour slab into the shed technique.
Only problem I can see is you lose 100mm of wall height and if you have seen concreters work the inside of your shed will have a lovely splatter effect feature wall on all walls!!!
Its also nice to put the portals together on a flat work surface.

Steve

[VladTepes]

haven't read the whole thread but a 100MM THICK SLAB WILL TAKE NORMAL VEHICLES / 4WD'S SHEDS ETC.

iF YOU ARE PLANNING TO PARK heavy VEHICLES (TRUCKS AND MACHINERY) ON IT YOU MIGHT CONSIDER 150MM, BUT THAT WOULD BE OVERKILL FOR ANY DOMESTIC APPLICATION.

oops sorry re caps but I cant be bothered going back and fixing it !

[Gillie]

We have just done 17 cubic metres about 3 months ago, The reo was F17 and the price varied from $90 to $130 a sheet depending on how long it had been in stock. We put colour in the concrete one bag per 2 cubic metres. (Colour is expensive) and we also needed drugs to help make the concrete set quicker as it is rather cold down here at the moment! Concrete cost (including colour and drugs) was $217 a cubic metre.
And then there was the cost of laying it which was about a Million dollars from memory. I don't want to talk about it!

[dullbird]

ok so a rough price we have for the concrete is around 5 grand...pretty sure that covers excavation as well

[THE BOOGER]

For that you could also get a big BBQ, most of syd AULRO for the weekend (BYO concrete & tools) excavate and pour the concrete. Slab might not be square or level but your only parking disco,s on it anyway:p
But thats about the going price for Sydney about double the price of Brisbane

[dullbird]

I know :( that is for a 12x12 though.......

[George130]

If it helps we were quoted $15,000 for 120m2 concrete driveway.

Needles to say it didn't happen.

[Gillie]

If it helps we were quoted $15,000 for 120m2 concrete driveway.

Needles to say it didn't happen.

Ours was about 123m2 and with sand, mesh, 6 metre drain, concrete, drugs and colour cost about $7000, maybe a bit more say $7500 This was done over two days, and a cash job. It seems that concrete can vary in price depending upon where you are. I think 25MPa was about $180 M3 cash but no colour or drugs.

[clean32]

sealing the floor, you can do the acid paint but thats like to much prep and it marks up looks not so good quite quick. what i have done many times ( for my self and others) is go to you cleaning suppliers and get there cheapest Polymer perpetrating sealer about 30 bucks for 5 lters. 3 coats of that should do it and its water based