For Grade Beam (Ribbed Beam) footing, Service Design, soil bearing check and overturning check is same as combined footing(only the self wt of Beam and & UDL on beam are considered and volume of beam projected inside soil is excluded to calculate soil weight properly)

For ultimate design (factored design), entire longitudinal moment (Sagging & Hogging) and shear force are resisted by beam. Slab portion only resist transverse moment & shear force (As an inverted cantilever slab projected from both side face of Beam)

Beam Design is strictly done as Balanced Section Design. Over Reinforced Section is not allowed. Program will automatically choose single layer/double layer Reinforcement according to the requirement.

Stirrup Calculation is done when shear force is more than τc.b.d. For other case only nominal stirrup would be provided.

Concrete & Steel Bond safety is checked in working stress method.