RCC Structures Design
The design of heel slab of a retaining wall is based on the maximum bending moment due to:

Its own weight
Load of the surcharge, if any
All listed here
Weight of the soil above it

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RCC Structures Design
The self-weight of the footing, is

Not considered for calculating the upward pressure on footing
Not considered for calculating the area of the footing
Also considered for calculating the upward pressure on footing
Both (b) and (c)

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