Viska Interview Questions and Answers

The characteristic compressive strength of concrete is the strength of concrete at 28 days of curing.

• It is the strength of concrete after 28 days of curing

• It is the strength at which the concrete can bear the maximum load without failure

• It is determined by testing a sample of concrete in a compression testing machine

• The characteristic compressive strength is used to design concrete structures

• For example, if the characteristic compressive strength of concrete is 30 MPa, it mea...read more

Sieve analysis of sand & aggregate is conducted to determine the particle size distribution.

• Collect a representative sample of sand or aggregate.

• Weigh the sample and record the weight.

• Prepare a series of sieves with different mesh sizes.

• Stack the sieves in ascending order of mesh size, with the finest sieve at the bottom.

• Place the sample on the top sieve and cover it with a lid.

• Shake the sieves manually or using a mechanical shaker for a specific duration.

• After shaking, weigh...read more

The exact height of falling of concrete is not specified in IS 456: 2000.

• IS 456: 2000 does not provide a specific height for the falling of concrete.

• The standard focuses on the design and construction requirements for reinforced concrete structures.

• It covers aspects such as materials, mix proportions, workmanship, and quality control.

• The height of falling concrete may be specified in project-specific specifications or guidelines.

• Consulting project specifications or relevant c...read more

The slump value of mass concreting refers to the measure of consistency or workability of the concrete mixture.

• Slump value is determined by conducting a slump test on freshly mixed concrete.

• It indicates the flow and compactability of the concrete.

• The slump value is measured in millimeters and can range from 0 to 200 mm.

• Higher slump values indicate a more fluid and workable concrete mixture.

• Lower slump values indicate a stiffer and less workable concrete mixture.

• The slump valu...read more

Concrete cube test is conducted to measure the compressive strength of concrete.

• Prepare the concrete cubes by using a standard mix design.

• Fill the cube moulds with freshly mixed concrete in layers.

• Compact the concrete using a vibrating table or a vibrating poker.

• Smooth the surface of the cubes using a trowel.

• Label each cube with relevant information like date, mix design, etc.

• Cure the cubes in a curing tank or moist environment for a specified period.

• After the curing period, ...read more

I prioritize safety in all aspects of project management by implementing safety protocols, conducting regular safety inspections, and providing safety training to all team members.

• Implement safety protocols and procedures to ensure a safe work environment

• Conduct regular safety inspections to identify and address potential hazards

• Provide safety training to all team members to increase awareness and promote safe practices

• Encourage open communication about safety concerns and em...read more

Preparation of BOQ and BBS involves detailed quantity take-offs and scheduling of materials and labor.

• BOQ (Bill of Quantities) is a detailed list of items, quantities, and rates required for a construction project.

• BBS (Bar Bending Schedule) is a detailed reinforcement calculation for concrete structures.

• Preparation of BOQ involves quantity take-offs from drawings and specifications.

• BBS includes detailed calculations of reinforcement bars required for each structural element.

• A...read more