Researchers at the the technical school eth zurich have constructed a unique lightweight concrete ceiling by mixing computational design 3d printing and pre.
Weight of concrete for roof slab.
Paroc air keeps the roof structure dry without any mechanical systems.
Of bars and their lengths.
Learn more and see projects with hollowcore slabs.
Slabs square footings or walls.
Length l width w thickness or height h quantity.
The building is old enough that the original specifications for the form deck is not available anymore although the profile is clearly visible from below at about 20 feet high and the concrete on top of the deck is 4 1 2 to 5 thick and reinforced with 4 bars at the bottom.
Hollow core concrete slabs paroc air is a simple and safe solution for making dry flat roofs.
Firstly find the volume of concrete in cu m.
A concrete roof is exactly what it sounds like.
Spancrete hollowcore precast concrete planks slabs are fire resistant reduce weight and costs.
Exact specifications vary but most concrete roofs are several inches thick.
It is a form deck and not a composite slab.
The concrete calculator estimates the volume and weight of concrete necessary to cover a given area.
Find cross sectional area of each bar and multiply by length e g.
Self weight of slab is equal to weight of concrete in slab and weight of steel which is used in construction of slab.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.
A typical concrete mix weighs 150 lbs per cubic foot 4 050 lbs per cubic yard or 2 400 kg per cubic meter.
A solid slab of concrete capping the top of your house.
For calculating self load for slab we have require self weight of concrete that is 2500 kg m3 for rcc slab and self weight of steel that is approx 8000 kg m3.
First we calculate weight of concrete in slab.
The weight of concrete is determined by its density which can vary based on the amount of aggregate water and air in the mix.
Thank you so much for all your replies.