Nirala Infratech Civil Engineer Interview Questions and Answers

LD for column refers to Liquidated Damages for delay in completing the column construction.

• LD stands for Liquidated Damages.

• It is a predetermined amount of money that the contractor will pay to the client in case of delay in completing the project.

• LD for column specifically refers to the amount of money that will be deducted for each day of delay in constructing the column.

• The LD amount is usually mentioned in the cont...read more

The mix ratio of M20 grade of concrete is 1:1.5:3.

• The mix ratio of M20 grade of concrete means the proportion of cement, sand, and aggregate used in the concrete mix.

• For M20 grade concrete, the mix ratio is 1 part cement : 1.5 parts sand : 3 parts aggregate.

• This means that for every 1 part of cement, 1.5 parts of sand, and 3 parts of aggregate are used.

• For example, if you have 1 bag of cement (50 kg), you would need 1....read more

The unit weight of steel varies depending on its type and grade.

• The unit weight of steel is typically measured in pounds per cubic foot (lb/ft³) or kilograms per cubic meter (kg/m³).

• The unit weight of common structural steel ranges from 490 to 7850 pounds per cubic foot (7850 to 12600 kg/m³).

• For example, the unit weight of mild steel is approximately 490 pounds per cubic foot (7850 kg/m³).

The clear cover for a beam is the distance between the outer surface of the beam and the nearest surface of the concrete cover.

• Clear cover is important to protect the reinforcement from corrosion and fire.

• The clear cover for beams is typically specified in construction drawings or codes.

• The clear cover can vary depending on the type of beam and its exposure conditions.

• For example, in a residential building, the clear c...read more

The height of a parapet wall varies depending on its purpose and location.

• The height of a parapet wall is typically determined by building codes and regulations.

• In residential buildings, parapet walls are usually around 3 feet tall to provide safety and privacy.

• In commercial or industrial buildings, parapet walls can be higher to serve as a barrier against noise, wind, or to hide rooftop equipment.

• Historical buildings ...read more

Cement is a binding material used in construction to hold together bricks, stones, and other materials. Sand is a fine aggregate used in concrete mixes.

• Cement is a powdery substance made from limestone and clay, which when mixed with water forms a paste that hardens to bind materials together.

• Sand is a granular material composed of finely divided rock and mineral particles, commonly used as a fine aggregate in concrete...read more

Aggregate and sand are materials commonly used in construction for creating concrete and mortar.

• Aggregate is a mixture of sand, gravel, crushed stone, or other materials used in construction.

• Sand is a granular material composed of finely divided rock and mineral particles.

• Aggregate is used in concrete to provide bulk and strength, while sand is used in mortar for bonding materials together.

• Examples of aggregate include...read more