shaunywrx

I need to put down a hardcore base 50ft by 50ft, to stand some stables on, if i dig out 8 inches deep by 50ft by 50ft anyone know what sort of tonnage of hardcore or mixed stones i would need?

ChrisGrant

Now i know my girl thinks 8" is okay but i think you might find you need to be a bit deeper............ or you could reinforce it with the metel grid thingy (forgotten what it is called!)

David Lock

Mesh?

I'd be inclined to go down another 4 in and then top with 4 - 6 in of concrete with metel (sic) grid thingy in concrete.

Make sure hardcore is well compacted. dl

Odds on

I reckon ChrisGrant is talking about rebar.

Peanuts

iTrader: (15)

50ft = 15.24m
therefore:

15.24*15.24*0.2 = 46.45m^3
46.45m^3 = 100ton on type 1

Peanuts

iTrader: (15)

increase depth of stone to 12"/300mm and it obviously quants up to 150ton of DOT type1

Assume £35/ton on type1 delivered unless you can take a wagon load in full.

I would go with a 6"/150mm well compacted type1 with a 4" concrete slab over that, in the slab you want mesh/fabric to prevent cracking.

PaulC72

add a little for waste too and possible soft spots

2.2t per m3 would provide plenty for waste.

NotoriousREV

Any civil engineers on here? No, **** off

Aaron1978

iTrader: (12)

we get dot type 1 crushed concrete at £11 per ton, but we buy 20 ton loads at a time. as peanuts said 200mm of dot and 100mm concrete.

80 ton stone

24 cubic metres of concrete.

about 15 sheets of (off the top of my head) a435 mesh(3x5m sheets)

done with an 8 ton 360 excavator around £350 to £400 a week self drive.

if you can lose the spoil around the stables you'll save a few bob, if not you want the wagons delivering stone to take a load away.
these are my prices btw

£880 for stone
£1700-2000 for the concrete
£400 for machine
£steel don't know but can find out
£totally depends on the tip/company or who you know
1 days work for 2 men prepping(1 man could do it)
2 days work 3 men concreting ( i would seperate in to 3 5x15 metre strips do the 2 outside strips one day then the middle one the next)
all imho

hth Aaron

RobJenks

Typical runway construction ie Gatwick /Heathrow :


Formation - All topsoil removed - Cut and filled with Sound clay- all soft spots removed and backfilled with sound material.
Sub Base - 300mm crushed rock well compacted
Base - 200mm Drylean concrete
Paving - 300mm concrete poured in 5m square panels level +/- 1mm

No reinforcement !

This was the specification for the Gatwick 1000' runway and taxi ways extension circa 1970

The moral here is -get your formation and sub base in good shape and you'll be ok.

Odds on

Rebar was invented for airport runways.

Peanuts

iTrader: (15)

Do the stone yourself, barrow it out and hire a small whaker plate from your local hire firm for the weekend.
Then (assuming you go with 24m^3 concrete) split that over 2 days.
It works out as 4 loads exactly (concrete generally comes in 6m^3 wagons) so you can do 2 loads one day and then 2 the next.
use a harris trowel to get a rolled edge finish between the 2 slabs.

Another way to keep costs down is to have a look about and see who's done any demolition work, this material is all good and called crush or crushed concrete rejects, its basically house remains (including the odd kettle lead ) and will do just as good a job.

looking at the useage, I would reduce the quants down to 6" of suitable crushed sub base material, then a 3" slab on top.
mesh sizes are 2.4m x 4.8m (4' x 8') and you need to overlap them so that you have a decent bond between sheets.

I'm bored enough to sketch all this out for you send me your fax number.

Peanuts

iTrader: (15)

**** that, just remembered you're doing 15m^2!

Hire a bomag heavy roller for the compacting job, you'll thank me when you see it

speedking

You don't need a Civil Engineer, you need a Quantity Surveyor for the original question.

This site Paving Expert has all the necessary info.

HTH

PS Think about whether you will ever want to drive on it. Will you be backing horseboxes onto the slab? If so then the construction needs to be very robust.

Secondly consider drainage. That area will produce a significant amount of runoff that will saturate adjacent ground, combined with horse hooves will make a quagmire I guess there will also be an amount of washing down so consider a system that will not get blocked. A 50m² flat slab will end up with ponding on which is not pleasant in the winter when it freezes, so you need to build in a fall.

shaunywrx

I suppose that's as uncivil, as you can get

Thanks gents, theres some real helpful information so far, but the idea is not to concrete on top of the hardcore, as it's only a temporary'ish solution, i can't be asked to mess around with planning permission for the concrete base. What im trying to do is provide a hard standing area to stand the stables on with a very small turn out area, and i don't want to spend a fortune, as we intend moving in the not too distant future, so don't want to spend thousands that i probably wont get back. If anyone of the civil people have any great ideas it would be much appreciated.
Oh, P.S. there will be no heavy traffic (i.e horsebox or trailer) only thing that might go on it is a quad bike or possibly a 4x4, and the horses get washed in a seperate area so not a problem there

NotoriousREV

Random. I much prefer the Class 37.

PaulC72

Or an estimator {they are usually more accurate}

David Lock

So will your poor little horseys have to kip down on some rough old hardcore or do the stables have their own floorboards?

What are the basic ground conditions like? For the lightweight use you describe I wonder if that interlocking plastic flooring that is used at outside events would do? No good if ground gets soggy though. I use some outside under a trailer and as a cheap base for storage crates and it's fine. dl

shaunywrx

They've got rubber horse matting at £220 a go, four stables = £880, i,d much rather have another dog, there a lot bloody cheaper!