Concrete Slab Roof Detail

The diameter of bar generally used in slabs are.

Concrete slab roof detail.

Oct 4 2017 flat concrete roof construction details detail drawings. The steel joists will provide a strong foundation for the flat concrete roofing. This is one of the types of concrete slabs. The simplest way to construct a roof terrace is by utilising a concrete slab.

Thickness of the slab is decided based on span to depth ratio specified in is456 2000. A concrete roof is exactly what it sounds like. Lightning protection terminal roof mount detail. Cracks from concrete shrinkage can typically be patched and sealed.

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. Step 3 placing the steel joists. As the width of the concrete slab is 16 3 4 inches place the steel joists at this distance. Because typical concrete is porous it needs to be treated with an additive such as xypex which makes the concrete waterproof.

Wall with self terminating parapro paraflex 531 liquid flashing. A solid slab of concrete capping the top of your house. Even though a treated concrete slab is waterproof standing water on a roof terrace should be avoided and so all roof terrace slabs should. If your roof is a flat concrete slab and is cracking there are a variety of causes.

If a concrete roof is leaking typical repair is to use a combination of synethtic fabric. A waffle slab has a holes underneath giving an appearance of waffles. The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab. Wall base termination detail.

Sagging from improper construction or inadequate reinforcement would require structural repairs. Paraguard expansion joint roof to wall with parasolo flashing. Heat welded walkway installation. Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses.

Exact specifications vary but most concrete roofs are several inches thick. Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars. Reinforced concrete slabs are heavier and generate higher seismic forces in an event. Roof area divider curb type.

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. Where to use waffle slab waffle slab details. The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab. 6 mm 8 mm 10 mm 12mm and 16mm.

A slab on ground is supported on the subsoil and is usually reinforced with reinforcing bars or welded wire mesh. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.