Reinforced Concrete Shear Wall Construction

The steel reinforcement weight per unit volume of concrete for shear wall construction ranged between 41 and 88 kg m 3 for buildings in low seismic zones toronto 66 105 kg m 3 for medium seismic zones montreal and 64 220 kg m 3 for high seismic zones vancouver.

Reinforced concrete shear wall construction.

Special reinforced concrete structural walls are walls that have been proportioned and detailed to meet special code requirements for resisting combinations of shear moment and axial force. Plywood is the conventional material used in wood timber shear walls but with advances in technology and modern building methods other prefabricated options have made it possible to inject shear assemblies into narrow walls that fall at either side of an opening. The changes are a result of the unsatisfactory performance of many shear walls in the chile earthquake of 2010 and the christchurch new zealand earthquake of 2011. The design and detailing requirements for special reinforced concrete shear walls have undergone significant changes from aci 318 11 to aci 318 14.

A structural reinforced concrete shear wall in a 5 story building provides lateral and gravity load resistance for the applied load as shown in the figure below. The braced frame steel used as a shear wall. Types of the shear wall. This is the most common type of this walls.

Shear walls are typically light framed or braced wooden walls with shear panels reinforced concrete walls reinforced masonry walls or steel plates. Shear wall section and assumed reinforcement is investigated after analysis to verify suitability for the applied loads. This wall consists of the reinforcements and concrete slab. A shear wall usually is designed as a braced moment resisting frame usually made of structural steel or the reinforced concrete wall.

The reinforcement spacing varies from 50 mm to 250 mm for walls in the longitudinal and transverse direction respectively. Materials used for shear wall construction. Figure 1 reinforced concrete shear wall geometry and loading. In reinforced concrete buildings the vertical elements are usually either moment resisting frames or structural walls sometimes referred to as shear walls.

Solid grouting and a hefty rebar schedule turn a unit block wall into a monolithic shear wall. Though it may also be made using plywood or masonry structure. Building a reinforced concrete block wall jlc online. A mason describes how he detailed a pair of large block walls to carry severe lateral loads.

Those are the most common types of these walls. The wall thickness of rcc varies from the 150mm to 400mm. Creating a wall opening in a reinforced concrete wall creates extra stress around that opening especially at the corners. Concrete shear wall construction 3 shear wall buildings in romania whe report 78 have lightly reinforced walls with one layer of 2 mm diameter vertical bars and 8 mm horizontal bars.

Transverse shear walls have boundary elements at the facade end.