Concrete Slab Roof Detail

If your roof is a flat concrete slab and is cracking there are a variety of causes.

Concrete slab roof detail.

If reinforced concrete were to be reused strong connections would have to be made between roof and walls. A waffle slab has a holes underneath giving an appearance of waffles. Exact specifications vary but most concrete roofs are several inches thick. This is one of the types of concrete slabs.

A concrete roof is exactly what it sounds like. Heat welded walkway installation. Wall flashing with coated metal edge. The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab.

Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab. 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. A solid slab of concrete capping the top of your house.

Reinforced concrete slabs are heavier and generate higher seismic forces in an event. Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars. Wall base termination detail. Thickness of the slab is decided based on span to depth ratio specified in is456 2000.

A concrete slab is a structural feature usually of constant thickness that can be used as a floor or a roof. Because typical concrete is porous it needs to be treated with an additive such as xypex which makes the concrete waterproof. Where to use waffle slab waffle slab details. The simplest way to construct a roof terrace is by utilising a concrete slab.

Oct 4 2017 flat concrete roof construction details detail drawings. As the width of the concrete slab is 16 3 4 inches place the steel joists at this distance. 6 mm 8 mm 10 mm 12mm and 16mm. Paraguard expansion joint roof to wall with parasolo flashing.

The steel joists will provide a strong foundation for the flat concrete roofing. If a concrete roof is leaking typical repair is to use a combination of synethtic fabric. Cracks from concrete shrinkage can typically be patched and sealed. Sagging from improper construction or inadequate reinforcement would require structural repairs.

A slab on ground is supported on the subsoil and is usually reinforced with reinforcing bars or welded wire mesh. Step 3 placing the steel joists. Even though a treated concrete slab is waterproof standing water on a roof terrace should be avoided and so all roof terrace slabs should. The diameter of bar generally used in slabs are.

Lightning protection terminal roof mount detail. Wall with self terminating parapro paraflex 531 liquid flashing.