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Viska Interview Questions and Answers

Updated 5 Sep 2024

Q1. What is the characteristic compressive strength of concrete.

Ans.

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

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Q2. How can we conduct the sieve analysis of sand & Agreegate.

Ans.

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

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Q3. What is the exact height of falling of concrete as per is IS 456: 2000

Ans.

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

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Q4. What is the slump value of mass concreting

Ans.

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

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Q5. How can we conduct concrete cube test.

Ans.

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

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Q6. How you handle the project based on safety because you will be our newly department which is recently created by the management?

Ans.

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

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Q7. Preparation of BOQ and BBS

Ans.

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

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Q8. Which grade concrete use in ohsr?

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Q9. What is the size of raft?

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