Floor Response Calculator

Damping Ratio (%):

The pre-set damping ratio of 3% is appropriate for fully fitted out and furnished floors in normal use.

Bay Arrangement, n_x x n_y:

Imposed floor load (kN/m²):

Office loading in category B1 from the UK National Annex to BS EN 1991-1-1 is 2.5 kN/m².

From the UK National Annex to BS EN 1991-1-1, the Imposed loading in categories C34(Corridors subject to crowds and wheeled vehicles), C37(general duty walkways), C 41 (Dance halls, studios, gymnasia), C42 (Drill halls) and C51(assembly areas without fixed seating, concert halls) is 5.0 kN/m².

From BS EN 1991 - 1 - 1 clause 6.3.1.2(8) the equivalent uniformly distributed load to allow for moveable partitions with a self - weight no higher than 2.0 kN/m is 0.8 kN/m².

Secondary beams:

Span of Primary Beam, L_x (m):

Span of Secondary Beam, L_y (m):

Profile:

Data for the selected profile is taken from manufacturers’ literature.

Slab Depth (mm):

The range of slab depths are appropriate for the decking profile selected. Thicker slabs or larger spans may require a thicker gauge profile for the construction stage. The appropriate thickness is shown on the output screen.

*Response Factor exceeds the value of 8.

Primary Beam:

These universal beam sizes are the smallest section that satisfies strength and deflection criteria for the selected arrangement and loading.

Secondary Beam:

These universal beam sizes are the smallest section that satisfies strength and deflection criteria for the selected arrangement and loading.

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