National Contracting Company Piping Supervisor Interview Questions and Answers

Grade of concrete and reinforcement diameter are important factors in civil engineering design.

• The grade of concrete determines its strength and durability.

• Common grades of concrete include M20, M25, and M30.

• Reinforcement diameter affects the strength and stability of the structure.

• Common reinforcement diameters include 8mm, 10mm, and 12mm.

• The appropriate grade of concrete and reinforcement diameter depend on the speci

A foundation is a structural element that supports a building or other structure by transferring its load to the underlying soil or rock.

• Foundations are typically made of concrete, masonry, or steel.

• They are designed to distribute the weight of the structure evenly and prevent settlement or movement.

• Different types of foundations include shallow foundations (such as strip footings and mat foundations) and deep foundati...read more

RCC stands for Reinforced Cement Concrete.

• RCC is a composite material made of cement, sand, aggregates, and steel reinforcement.

• It is widely used in construction for its strength and durability.

• The steel reinforcement provides tensile strength to the concrete, while the cement, sand, and aggregates provide compressive strength.

• RCC is commonly used in the construction of buildings, bridges, dams, and other structures.

• Ex...read more