Civil Technical Supervisor Interview Questions and Answers

The grades of concrete are a classification system used to indicate the strength and quality of concrete.

• Concrete is classified into different grades based on its compressive strength.

• The most commonly used grades of concrete are M20, M25, M30, M35, and M40.

• The letter 'M' stands for mix, and the number after it represents the characteristic compressive strength of the concrete in megapascals (MPa).

• For example, M20 concrete has a characteristic compressive strength of 20 MPa.

• H...read more

Design mix concrete refers to a specific combination of ingredients in concrete to achieve desired strength and durability.

• Design mix concrete is prepared by calculating the proportions of cement, aggregates, and water based on the desired strength and durability requirements.

• It is used in construction projects where specific concrete properties are needed, such as high strength, low permeability, or resistance to chemical attack.

• For example, in the construction of high-rise ...read more

Contour surveying is a technique used to determine the elevation and shape of the land surface.

• Contour surveying involves measuring and mapping the contours or lines of equal elevation on a piece of land.

• It helps in understanding the topography and slope of the land, which is crucial for various civil engineering projects.

• Contour lines are drawn on a map to represent the shape and elevation of the land, with each line indicating a specific elevation.

• By analyzing contour lines...read more