In the Serviceability State following items are checked.
>> Unfactored external loads
>> Stresses due to shrinkage
>> top to bottom of the slab.
Deflection of the floor ( settlement of the sub-base)
PUNCHING check
Even as practice has shown that punching is very rarely the cause for slab failure this design note makes a check whether the
highest point and/or wheelloads could cause punching failure.