Dilip Buildcon Site Supervisor Interview Questions and Answers for Experienced

The size of a concrete cube is typically 150mm x 150mm x 150mm for standard testing purposes.

• Standard size for concrete cube is 150mm x 150mm x 150mm

• Used for testing the compressive strength of concrete

• Other sizes may be used for specific projects or requirements

The ratio of M 25 used in the project is 1:1:2.

• The ratio of M 25 concrete is 1 part cement, 1 part fine aggregates, and 2 parts coarse aggregates.

• This ratio ensures the desired strength and durability of the concrete mix.

• For example, if we need to prepare 1 cubic meter of M 25 concrete, we would use 350 kg of cement, 350 kg of fine aggregates, and 700 kg of coarse aggregates.

Steel is used in construction works due to its strength, durability, versatility, and cost-effectiveness.

• Steel is known for its high tensile strength, making it ideal for supporting heavy loads in buildings and bridges.

• Steel is durable and resistant to corrosion, ensuring the longevity of structures.

• Steel can be easily fabricated into different shapes and sizes, allowing for versatile design options.

• Steel is cost-effec...read more

Concrete cover is provided in all structural members to protect the reinforcement bars from corrosion and fire damage.

• Concrete cover protects the reinforcement bars from corrosion caused by exposure to moisture and chemicals in the environment.

• It also provides protection against fire damage by acting as a barrier between the reinforcement and the fire.

• Proper concrete cover helps in maintaining the durability and streng...read more

Calculate the amount of steel required for a staircase based on design and dimensions.

• Calculate the total length of all the steel bars needed for the staircase

• Determine the diameter and spacing of the steel bars based on design requirements

• Consider the number of steps and the dimensions of the staircase in the calculation

• Account for any additional reinforcement needed for structural integrity

• Consult structural drawings

Concrete workability can be determined by conducting a slump test.

• Conduct a slump test to measure the consistency of the concrete mix.

• Adjust the water content or use admixtures to achieve the desired workability.

• Consider factors such as temperature, humidity, and type of aggregates in determining workability.

• Consult with concrete mix design experts for guidance on achieving the desired workability.

• Use tools like flow t...read more

Slump test is a method to measure the consistency of concrete before it sets.

• Slump test involves filling a cone-shaped mold with concrete, then lifting the mold to see how much the concrete slumps or settles.

• The amount of slump indicates the workability of the concrete - higher slump means more workable concrete.

• The test helps ensure the concrete is of the right consistency for proper placement and compaction.

• Slump tes...read more

Concrete mix design is the process of selecting suitable ingredients and determining their proportions to produce concrete with desired properties.

• Involves selecting the right combination of materials like cement, aggregates, water, and admixtures

• Proportions are determined based on desired strength, workability, durability, and other properties

• Testing and adjusting the mix design to meet project requirements

• Example: A ...read more

Cube test is a method to determine the compressive strength of concrete.

• Concrete cubes are casted and cured for 28 days before testing.

• The cubes are then placed in a compression testing machine.

• The maximum load that the cube can bear before failure is recorded.

• The compressive strength of the concrete is calculated using the formula: compressive strength = maximum load/area of cube face.

• The cube test is an important qua

ESR stands for Earth System Research, CWR stands for Crop Water Requirement, and steel IS code refers to Indian Standard code for steel.

• ESR is a research program that studies the Earth's climate system and its changes over time.

• CWR is the amount of water needed by crops to grow and produce a good yield.

• Steel IS code refers to the Indian Standard code for steel, which provides guidelines for the production and use of st