True or False Set a3 m and b7 m The concrete slab will behav

True or False:

Set a=3 m and b=7 m.

The concrete slab will behave as a one-way slab.

Solution

a) False. This slab is two way slab. One way slab will be supported by only two side. But two way slab supported by four sides and here it is.

b) True. Total reactions are 4 and total equilibrium equations are 3+1. 1 because of internal hinge present at middle. Hence 4-4=0. It is statically determinate.

c) False. It is statically indeterminate. Because number of reactions are 5 and equilibrium equations are 3. 5-3=2. hence it is indeterminate to 2 degrees.