The fundamental frequency of the floor is acceptable as it is greater than 8 Hz. (b) Check the static deflection of the floor: Maximum allowable deflection under the 1 kN point load, ap (equation (4.47) (UKNA to EC5, Table NA.5)) (Mathcad adjusted to make it dimensionally correct)

1000 N point load at the centre of the floor, P kN

Actual deflection of floor under 1 kN, a (equation (4.49) (UKNA to EC5, NA,2,6,2))

P ' kdist ' t3q ' kamp 48 ' E0.mean ' ^joist a = 1.47 mm

The deflection of the floor is less than the allowable value and this requirement is acceptable

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