Concrete Technology and Design of Concrete Structures
The critical section for finding maximum bending moment for footing under masonry wall is located

at a distance equal to effective depth of footing from the edge of the wall
at the edge of the wall
at the middle of the wall
halfway between the middle and edge of the wall

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Concrete Technology and Design of Concrete Structures
High carbon content in the steel causes

decrease in tensile strength but increase in ductility
increase in both tensile strength and ductility
decrease in both tensile strength and ductility
increase in tensile strength but decrease in ductility

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