A concrete roof is exactly what it sounds like.
Concrete slab roof detail.
The steel joists will provide a strong foundation for the flat concrete roofing.
Thickness of the slab is decided based on span to depth ratio specified in is456 2000.
A slab on ground is supported on the subsoil and is usually reinforced with reinforcing bars or welded wire mesh.
Paraguard expansion joint roof to wall with parasolo flashing.
The simplest way to construct a roof terrace is by utilising a concrete slab.
Cracks from concrete shrinkage can typically be patched and sealed.
The diameter of bar generally used in slabs are.
Exact specifications vary but most concrete roofs are several inches thick.
A waffle slab has a holes underneath giving an appearance of waffles.
The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab.
Reinforced concrete slabs are heavier and generate higher seismic forces in an event.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.
The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab.
Even though a treated concrete slab is waterproof standing water on a roof terrace should be avoided and so all roof terrace slabs should.
Wall flashing with coated metal edge.
Roof area divider curb type.
6 mm 8 mm 10 mm 12mm and 16mm.
Wall with self terminating parapro paraflex 531 liquid flashing.
A suspended slab or structural slab spans between supports and must be reinforced to resist bending moments calculated from statics based on the magnitude of load and span.
Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars.
If your roof is a flat concrete slab and is cracking there are a variety of causes.
Lightning protection terminal roof mount detail.
If a concrete roof is leaking typical repair is to use a combination of synethtic fabric.
Oct 4 2017 flat concrete roof construction details detail drawings.
A concrete slab is a structural feature usually of constant thickness that can be used as a floor or a roof.
A solid slab of concrete capping the top of your house.
Heat welded walkway installation.
Step 3 placing the steel joists.
Wall base termination detail.
Because typical concrete is porous it needs to be treated with an additive such as xypex which makes the concrete waterproof.
The concrete waffle slab is often used for industrial and commercial buildings while wood and metal waffle slabs are used in many other construction sites.
Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses.
As the width of the concrete slab is 16 3 4 inches place the steel joists at this distance.
If reinforced concrete were to be reused strong connections would have to be made between roof and walls.