Stuckingeneva
Member
Ive got some walls to do, was just going to buy panels, but i have been offered the used of some steel formwork. But ive never done it before, do you need to put in foundations? And how to you tie them to the floor slab?
it may work out more expensive to shutter them. panels are around £105 for a 15ft 4" panel. shuttering say 250mm columns? 1m high 15ft (4.572 long)Ive got some walls to do, was just going to buy panels, but i have been offered the used of some steel formwork. But ive never done it before, do you need to put in foundations? And how to you tie them to the floor slab?
Google says one meter concrete weights 2.41 ton. So 300kg of cement @€200 ton is 60 then 100 kg of water leaves 2ton of stone @13.90 is 27.80. So it's costing €87.80 per cubic meter. But then that includes vat. Whereas he quotes 70 for readymix would be plus vat. Had pan mixer and sold it as it don't pay.
Google says one meter concrete weights 2.41 ton. So 300kg of cement @€200 ton is 60 then 100 kg of water leaves 2ton of stone @13.90 is 27.80. So it's costing €87.80 per cubic meter. But then that includes vat. Whereas he quotes 70 for readymix would be plus vat. Had pan mixer and sold it as it don't pay. Try to do jobs of at least 5m3 as that is min delivery with no small load charge around here
Cement is £3.10 per bag here if you buy enough i.e. £124 per tonne
£37.2 per 300kg + ballast at £34 per 2 tonnes = £71.20 per cube.
Was quoted £93 and £90 per cube for Rc 40 this week for 7.5 m loads in multiples.
Try to do jobs of at least 5m3 as that is min delivery with no small load charge around hererc40 had 4 cube on last job £80 per cube readymix
Yes you do need foundations and when you are laying them make a very short wall about 50mm high on top with more concrete before the footing goes off, you can jam a few re-bars in verticallyIve got some walls to do, was just going to buy panels, but i have been offered the used of some steel formwork. But ive never done it before, do you need to put in foundations? And how to you tie them to the floor slab?
Ive done them before onto rolled stone but it needs to level and packed down wellIve got some walls to do, was just going to buy panels, but i have been offered the used of some steel formwork. But ive never done it before, do you need to put in foundations? And how to you tie them to the floor slab?
Yes you do need foundations and when you are laying them make a very short wall about 50mm high on top with more concrete before the footing goes off, you can jam a few re-bars in verticallyView attachment 463234 at this stage too if you like. No bars in this wall, can't find one easily but you can just see the stub wall made by laying two bits of 4 x 2 on top of the nearly dry footing.
The stub wall is to stop the bottom of the shuttering wandering about when someone dumps 15 tonnes of liquid concrete in the top as well as sealing the joint against damp ingress.Just wondering why the 50mm stub wall.?
If you were wanting to shutter a wall on some concrete that is already laid... Would it work.? As in would the new shuttering wall seal to the current concrete floor or would you still get water going under the new shuttered wall.?
Depends on how many times you are planning to use them - shuttering ply - once or twice, far Eastern - 10 to 20 times, more than that Marine.Right after buying a bundle of 5ft x 2ft pans for very small money .[emoji1] only downside been they need new timber panels . Anyone got a recommendation for what I can use to re sheet them St the lowest cost but still up to the job .
Right after buying a bundle of 5ft x 2ft pans for very small money .[emoji1] only downside been they need new timber panels . Anyone got a recommendation for what I can use to re sheet them St the lowest cost but still up to the job .
I think myself that it's worth going for the marine, either way . Finish , lasting , resale ability.
Those homemade 16 x 6 ones I showed recently , were done with ordinary ply. They haven't been filled 10 times , and there are bits of damage on the faces. I used STOU on them , seemed better than shuttering oil.
What would you call 'small' money €10 or less each ? Any keys or wedges with them ? Sorry for the questions , but half thinking of doing the same
Good chance the pans will need 18mm ply to take them out flush with frame.
Depends on how many times you are planning to use them - shuttering ply - once or twice, far Eastern - 10 to 20 times, more than that Marine.
I use 12 mm with 2 foot squares of metal on the frames - there is a slight bulge in the wall after but you have to look hard, presumably 18 mm thick if you are really fussy. My frames are in a photo above so you know what I mean, - each side is 2 x 8 x 4 sheets as well as a 4 x 5 foot sheet to make 21 feet to span the girders.
Good calculation , can you do it at cement £111 per ton and block mix £9.80 per tonCement is £3.10 per bag here if you buy enough i.e. £124 per tonne
£37.2 per 300kg + ballast at £34 per 2 tonnes = £71.20 per cube.
Was quoted £93 and £90 per cube for Rc 40 this week for 7.5 m loads in multiples.
Setting shutters up today, one of my favourite jobs
How are they being tied into the floor slab?