We have a metal decking flooring system with 130mm thick in-situ concrete slab, spanning on to beams at 2.5m-2.75m centres. The slab weighs 2.4kN/sqm, +1.5 kN/sqm finishes, and the live load is 6kN/sqm. We are happy with the Natural Frequency of the steel beam, but would like to know what is an acceptable natural frequency for the slab itself.
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