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...

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