Folded Concrete Roof Slab

This allowe d the casting of four sections of the roof on each form using the lift slab p r inciple of stacking one slab on top of the other.

Folded concrete roof slab.

4 inch into the roof slab after concreting these channels retain the insulation and serve as attachment. Pyramidal roof slab 4. Roof concrete right retained the concrete for the final layer. A solid slab of concrete capping the top of your house.

This type of slab is closed at all ends and open at one end. As a folded slab. This slab lies below the actual slab and above the door sill level. The continuous slab is folded at at least one beam defining path across its planar supporting surface and preferably includes a right angle grid of such folds with downward peripheral folds at the.

Exact specifications vary but most concrete roofs are several inches thick. Two way slab 3. These types of concrete slabs are used in houses. In order to re d u c e both labor and materials for form ing two forms we r e constructed on the ground utilizing a series of wood trusses sheathed over with 3 4 inch marine plywood.

Slab supported directly by columns are called flat slab. Circular slab non planer roof slab. Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. Planar roof slab the planar roof slabs are further classified as follows.

Structures in folded slab england and america illustrate use of folded slabs in a wide variety of shapes. The slab which provided above the door for storage purpose is called low roof slab. Beam action of the fold or quoin is explained. Folded slab roofs concrete construction.

Placing concrete in one of two roof forms consisting of a series of wood trusses sheathed with 3 4 inch marine plywood. Samuely discusses design principles for folded slab roofs stair landings and galleries with special attention to shear forces and to stresses produced by differential deformation in the slabs. A concrete roof is exactly what it sounds like. Flat slab supported directly on columns without beams.

Slabs are classified as. Precast elements prestressing and composite construction precast with cast in place concrete are shown as they apply to construction. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Reinforcement detailing of a slab is done based on its support conditions.

The first three sections which were cast employed concrete inserts. The building was designed in the shape of an octagon incorporating 8 separate gables each engineered as a folded slab. Slab may be supported on walls or beams or columns. Each 4 inch thick section covered 400 square feet and weighed 11 tons.

But bermudez says the. On the other hand when. Folded plate design structurally these roofs are folded plates so they require an engineer ing design. One way slab 2.