![]() ![]() In conclusion, the author proposes to add the step of vibration analysis in post-tensioned slabs design. The allowance values are evaluated according to Applied Technology Council of America and Vietnamese Code. They are: calculating natural frequency, exciting force of vibration, selecting floor type for damping ratio, calculating modal mass (weight of vibrating floor panel), determining peak acceleration ratio caused by footfall and comparing with the allowance values. The vibration analysis will be explained through the six-step process. The Concrete Society Post-tensioned concrete floors: Design handbook Concrete Society Technical Report No. This article shows the analysis vibration of author for some kinds of real and finished post-tension slabs in Vietnam then giving the proposal about which slab type should be determined vibrations guaranteeing the comfort of occupants. Post-tensioned concrete floors Design Handbook Report of a Concrete Society Working Party. Therefore, it is important to analysis vibration of floor to determine whether a floor meets the serviceability requirements for vibration using conservative values or whether a more detailed analysis is considered. But sometimes, people feel uncomfortable because of the floor’s vibration caused by footfalls or running machines. Nowadays, the prestressed-concrete slabs are using more and more widely in Vietnam because they create the economic value for the whole project. ![]()
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