Rhythmic Activities Example
Rhythmic Activities Example
EXAMPLE 8: Determine the minimum natural frequency needed for a composite floor system in a gymnasium to be used exclusively for aerobics and other similar exercises. The total normally sustained load on the floor including the dead weight and the weight of non-participating audience is estimated at 80 pounds per square foot.
1. From Table 5 ---> select a forcing frequency, say 2.5 Hz.
2. From Table 6 ---> select an acceleration limit, say 0.05g.
3. From Table 5 ---> estimate total load
Wt = (80 psf + 4.2 psf) = 84.2 psf
4. Check frequency formula for all three harmonics.
5. Check with the Minimum values from Table 7.