Sub Engineer Interview Questions and Answers

The dimensions of steel bar used in column depend on the load it needs to bear and the design specifications.

• The size and spacing of steel bars in a column are determined by the structural engineer.

• The diameter of steel bars used in columns can range from 12mm to 40mm.

• The spacing between steel bars in a column can range from 75mm to 150mm.

• The number of steel bars used in a column depends on the load it needs to bear.

• The steel bars used in columns should be of high strength an...read more

The least count of surveying staff is the smallest measurement that can be read from the instrument.

• It is important to know the least count of the instrument to ensure accurate measurements.

• The least count varies depending on the instrument used.

• For example, the least count of a theodolite may be 20 seconds, while the least count of a level may be 0.5 mm.

• The least count is usually specified in the instrument manual or can be calculated by dividing the smallest division on the...read more

The process for laying a water pipeline involves planning, excavation, laying the pipe, connecting fittings, testing, backfilling, and restoration.

• Plan the route of the pipeline to determine the best path and avoid obstacles.

• Excavate the trench along the planned route to the required depth and width.

• Lay the pipe in the trench, ensuring proper alignment and grade.

• Connect fittings such as valves, bends, and couplings to the pipe.

• Test the pipeline for leaks and pressure using hy...read more

Aggregates are materials used in construction. There are two types: coarse and fine.

• Coarse aggregates are larger than 4.75mm in size, e.g. gravel, crushed stone, slag.

• Fine aggregates are smaller than 4.75mm in size, e.g. sand, natural stone dust.

• Aggregates are used in concrete, mortar, and asphalt.

• The quality of aggregates affects the strength and durability of the construction material.