Hardcore & concrete quantities

steamjetjoe

Hello all,

Im in need of some help with hardcore & concrete quantities for the floor of my shed.

The shed is 18x13 foot internally.

I haven't a clue about the dept I need the hardcore or concrete

Thanks
Joe

Palmy

Normally the floor on a house (concrete slab) should be .150mm thick,If your doing a shed you will only need about .100mm thick as long as your not planning to park a car in there.So to measure your quantites for the concrete just add up your area and x .100mm to get you cubic meters.:o

steamjetjoe

Palmy wrote: »

Normally the floor on a house (concrete slab) should be .150mm thick,If your doing a shed you will only need about .100mm thick as long as your not planning to park a car in there.So to measure your quantites for the concrete just add up your area and x .100mm to get you cubic meters.:o

Ok, im thinking 3 inch of concrete will do. Nothing heavy will be on it. My calculations put that at just under 2 m3 of concrete.

Any idea the break down of sand,gravel and bags of cement

Martron

hope i did this right

have a read here covers what i think you need

http://www.boards.ie/vbulletin/showthread.php?t=2055616578

steamjetjoe

Martron wrote: »

hope i did this right

have a read here covers what i think you need

http://www.boards.ie/vbulletin/showthread.php?t=2055616578

Thanks martron, I forget what ive posted in the past:o

But im still confused as how to work out my quantities.
What formula did you use

Martron

ha ha thats funny i dod not even notice. i forget what i post sometimes too

i have used a mix of 1:2:3

1 part cement

2 parts sand

3 parts coarse aggregate


so if you are looking at 2 m3 ( and concrete on average has a density of 2400kg per m3 )

this means that 2 m3 of concrete will weigh roughly 4.8 tonnes 4.8 / 6 ( this is the number of parts in the mix) = 800 kgs

so this gives us the following weights

1 part cement = 800kg ( divide this by 25 gives you the number of bags = 32)

2 parts sand = 1600kg

3 parts coarse aggregate = 2400kg

. Hope i worked this out for you ok.

now the quantities do not take into account for the weight of the water

steamjetjoe

Martron wrote: »

ha ha thats funny i dod not even notice. i forget what i post sometimes too

i have used a mix of 1:2:3

1 part cement

2 parts sand

3 parts coarse aggregate


so if you are looking at 2 m3 ( and concrete on average has a density of 2400kg per m3 )

this means that 2 m3 of concrete will weigh roughly 4.8 tonnes 4.8 / 6 ( this is the number of parts in the mix) = 800 kgs

so this gives us the following weights

1 part cement = 800kg ( divide this by 25 gives you the number of bags = 32)

2 parts sand = 1600kg

3 parts coarse aggregate = 2400kg

. Hope i worked this out for you ok.

now the quantities do not take into account for the weight of the water

:eek:Warning Warning, brain overload:eek: Just kidding, Thanks again. Ill mull those figures over in my head and see what I come out with:)


Ok so, ill need 4 ton of sand/aggregate mix. Or 4 ton bags of sand/aggregate mix.