Prestressed hollow core slabs

Reduced shear resistance on flexible supports

In structural engineering ceilings affect both the building technique and the economic construction. Using precast prestressed hollow core slabs meets the demands of modern design and construction to a high extent. However, the shear resistance of hollow core slabs is reduced if the slabs are bedded on slender beams or girders instead of rigid walls. According to investigations in Finland stresses in transverse direction of the slabs due to flexible supports may lead to a decrease in shear resistance of up to 60%. The reduction in shear resistance depends on the composite action between the...

Related articles:

Issue 2016-08

The modified hollow core slabs

(10) WO 2016/086948 Al (22) 03.12.2014 (43) 09.06.2016 (57) A method and a technique for producing precast-cast-in-situ lightweight rigid building assembled from the modified hollow core slab and...

more
Issue 2020-02 New guideline for structural components made from precast hollow-core slabs according to DIN EN 1168

New verification method for flexible support

The judgment issued by the European Court of Justice on 16 October2014 in Case C-100/13 means that, since November 2016, the DIBt has no longer been in a position to grant national technical...

more
Issue 2020-02 DafStb Code of Practice

Members constructed of hollow-core slabs

Work on the DafStb Code of Practice on precast hollow-core slabs [1] began in November of 2017. The Code of Practice is planned to consist of two parts: Part 1: Reinforced-concrete hollow-core slabs...

more
Issue 2020-02 State of research and prospects

Optimizing the shear design of slabs

A significant amount of the used concrete volume is applied to slab structures where shear design is often determinative of the dimensioning. Since applying shear reinforcement to slabs is elaborate,...

more
Issue 2017-02 Flat slabs and foundations

New punching shear reinforcement systems

The structural design of flat slab systems is usually governed by the punching shear resistance of the slab. To achieve a sufficient punching shear resistance at reasonable slab thickness, shear...

more