Apex Biotech Interview Questions and Answers

Minimum bar size for square and round columns in construction

• Minimum bar size for square column is usually 4 bars of 12mm diameter

• Minimum bar size for round column is usually 6 bars of 12mm diameter

• The minimum bar size may vary based on the design requirements and load calculations

Approximately 500 bricks are required in 1 cubic meter.

• Approximately 500 bricks are required in 1 cubic meter.

• The number of bricks required can vary based on the size and type of bricks being used.

• It is important to consider wastage and breakage when calculating the quantity of bricks needed.

Brick quality at site can be checked by visual inspection, sound test, water absorption test, and dimension measurement.

• Visual inspection for cracks, chips, and uniformity in shape and size

• Sound test by tapping the brick to check for a clear ringing sound indicating good quality

• Water absorption test by immersing the brick in water and checking for absorption rate

• Dimension measurement to ensure uniformity in size

The maximum height of concrete can be determined by considering factors such as the strength of the concrete mix, formwork design, and pouring technique.

• The strength of the concrete mix plays a crucial role in determining the maximum height it can be poured without compromising structural integrity.

• The design and quality of formwork used to contain the concrete during pouring also impact the maximum height that can be achieved.

• Proper pouring techniques, such as using a pump o...read more

Grade M25 ratio is a mix design ratio used in concrete construction.

• Grade M25 ratio refers to the mix design of concrete where M denotes mix and 25 denotes the compressive strength of concrete in N/mm^2 after 28 days of curing.

• The ratio for Grade M25 concrete is 1:1:2, which means 1 part of cement, 1 part of sand, and 2 parts of coarse aggregates.

• This mix ratio is commonly used in construction projects requiring medium strength concrete.

• Proper water-cement ratio should also b...read more