Nagarjuna Construction Company Junior Engineer Interview Questions and Answers for Freshers

Unit weight of different diameters of steel bars

• Unit weight of steel = D^2/162.2 kg/m, where D is the diameter of the steel bar in mm

• Calculate unit weight for each diameter provided in the question

• 32mm dia steel: 32^2/162.2 = 6.31 kg/m

• 25mm dia steel: 25^2/162.2 = 3.85 kg/m

• 20mm dia steel: 20^2/162.2 = 2.47 kg/m

• 16mm dia steel: 16^2/162.2 = 1.57 kg/m

• 10mm dia steel: 10^2/162.2 = 0.62 kg/m

• 08mm dia steel: 08^2/162.2 = 0.39 kg/m

• 06mm dia steel: 06^2/162.2 = 0.22 kg/m

The size of plywood board used in centring varies depending on the specific project requirements.

• The size of plywood board used in centring can range from 4 feet by 8 feet to 4 feet by 10 feet.

• Thicker plywood boards are typically used for heavier loads or taller structures.

• Plywood boards are commonly used in construction for formwork and temporary support structures.

• The size of plywood board used in centring is determined by the size and weight of the concrete structure being...read more

The length of props used in staging varies depending on the specific requirements of the production.

• The length of props can range from a few inches to several feet, depending on the size of the stage and the needs of the performance.

• Props used in staging can include furniture, small handheld items, and larger set pieces.

• The length of props is determined by the director and set designer during the planning stages of the production.

Generally, aggregates ranging from 3/8 inch to 1.5 inches are used in PCC.

• Aggregates used in PCC typically range from 3/8 inch to 1.5 inches in size.

• The size of aggregates used in PCC depends on the specific requirements of the project.

• Smaller aggregates are usually preferred for smoother finishes, while larger aggregates may be used for increased strength.

• For example, a common aggregate size used in PCC is 3/4 inch.

Unit weight of 20mm aggregate is typically around 1550 kg/m^3.

• Unit weight of 20mm aggregate is usually around 1550 kg/m^3.

• It can vary slightly depending on the specific gravity of the aggregate material.

• Unit weight is important in determining the amount of material needed for a project.

• For example, if the specific gravity of the aggregate is 2.7, then the unit weight would be 1620 kg/m^3.

Unit weight of 10mm aggregate is typically around 1600 kg/m^3.

• Unit weight of 10mm aggregate is usually around 1600 kg/m^3.

• It can vary slightly depending on the specific gravity of the aggregate material.

• Unit weight is important in determining the quantity of aggregate needed for a project.