Concrete Slab Roof Detail

Thickness of the slab is decided based on span to depth ratio specified in is456 2000.

Concrete slab roof detail.

Sagging from improper construction or inadequate reinforcement would require structural repairs. The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab. The steel joists will provide a strong foundation for the flat concrete roofing. Lightning protection terminal roof mount detail.

Exact specifications vary but most concrete roofs are several inches thick. Because typical concrete is porous it needs to be treated with an additive such as xypex which makes the concrete waterproof. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. A concrete slab is a structural feature usually of constant thickness that can be used as a floor or a roof.

Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. A solid slab of concrete capping the top of your house. If a concrete roof is leaking typical repair is to use a combination of synethtic fabric. 6 mm 8 mm 10 mm 12mm and 16mm.

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. If your roof is a flat concrete slab and is cracking there are a variety of causes. Even though a treated concrete slab is waterproof standing water on a roof terrace should be avoided and so all roof terrace slabs should. Heat welded walkway installation.

If reinforced concrete were to be reused strong connections would have to be made between roof and walls. Roof area divider curb type. Wall flashing with coated metal edge. A concrete roof is exactly what it sounds like.

The simplest way to construct a roof terrace is by utilising a concrete slab. Oct 4 2017 flat concrete roof construction details detail drawings. A slab on ground is supported on the subsoil and is usually reinforced with reinforcing bars or welded wire mesh. A waffle slab has a holes underneath giving an appearance of waffles.

Paraguard expansion joint roof to wall with parasolo flashing. Wall base termination detail. Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars. As the width of the concrete slab is 16 3 4 inches place the steel joists at this distance.

Step 3 placing the steel joists. Cracks from concrete shrinkage can typically be patched and sealed. Where to use waffle slab waffle slab details. The diameter of bar generally used in slabs are.

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. Reinforced concrete slabs are heavier and generate higher seismic forces in an event.