Nagarjuna Construction Company Senior Quality Engineer Interview Questions and Answers

Shear wall is a structural element used to resist lateral forces such as wind or earthquake.

• Shear walls are typically made of reinforced concrete, masonry, or wood.

• They are placed in the perimeter of a building or in the center to provide stability.

• Shear walls reduce the amount of sway or deformation in a building during a seismic event.

• They also help to distribute the load of the building evenly across the foundation.

• ...read more

Shear walls are used to resist lateral forces. Types include braced, unbraced, and coupled. IS code: IS 456:2000.

• Shear walls are vertical elements that resist lateral forces such as wind and earthquakes.

• Braced shear walls have diagonal braces that resist lateral forces.

• Unbraced shear walls rely on their own stiffness to resist lateral forces.

• Coupled shear walls are two or more shear walls connected by beams or slabs.

• IS...read more

Precautions for slab concrete in rainy season

• Ensure proper drainage to prevent water accumulation on the slab

• Cover the slab with waterproof materials to protect it from rain

• Monitor weather forecasts and plan concrete pouring accordingly

• Use additives in the concrete mix to improve its resistance to water damage

• Allow extra time for curing due to slower drying in rainy conditions

Concrete is a versatile building material made of cement, water, and aggregates. It is used in construction for various structures.

• Concrete is a composite material composed of cement, water, and aggregates like sand or gravel.

• It is known for its strength, durability, and versatility in construction projects.

• Concrete can be used for building foundations, roads, bridges, dams, and other structures.

• It can also be used for...read more

Steel and concrete are commonly used materials in construction for their strength and durability.

• Steel is used in construction for structural support, such as beams, columns, and reinforcement in concrete.

• Concrete is used for foundations, walls, floors, and other structural elements.

• Steel and concrete are often used together in buildings and infrastructure projects to create strong and durable structures.

• Examples inclu...read more

PEB material refers to pre-engineered building materials used in finishing construction projects.

• PEB materials are commonly used in construction projects for their durability and cost-effectiveness.

• Examples of PEB materials include steel beams, roofing sheets, wall panels, and insulation materials.

• Quality control is essential in ensuring that PEB materials meet industry standards and specifications.

• Inspecting PEB mater...read more

The code of mix design refers to the specific set of guidelines and calculations used to determine the proportions of ingredients in a concrete mix.

• The code of mix design provides a standardized approach to ensure the desired strength and durability of the concrete.

• It takes into account factors such as the type of cement, aggregate properties, water-cement ratio, and admixtures.

• Examples of mix design codes include the ...read more

Water absorption in bricks depends on various factors such as composition, porosity, and manufacturing process.

• Water absorption in bricks is measured as a percentage of the weight of dry brick that absorbs water.

• The water absorption rate of bricks can vary from 5% to 20% depending on their quality.

• Bricks with higher water absorption rates are generally less durable and more prone to damage.

• Factors affecting water absor...read more

The number of tests in bricks depends on various factors such as quality standards, intended use, and regulations.

• The number of tests can vary based on the type of bricks (e.g., clay bricks, concrete bricks).

• Common tests for bricks include compressive strength, water absorption, efflorescence, and dimensions.

• Additional tests may be conducted to assess durability, thermal conductivity, and resistance to chemicals.

• Testin...read more

Quality assurance is the process of ensuring that a product or service meets the desired level of quality.

• It involves creating and implementing processes and procedures to prevent defects and errors.

• It includes testing and evaluating products or services to ensure they meet the required standards.

• It also involves continuous improvement to maintain and enhance the quality of the product or service.

• Examples include softw...read more

Standard deviation is a measure of the amount of variation or dispersion of a set of values.

• Standard deviation is calculated by taking the square root of the variance.

• It is used to quantify the amount of variation or dispersion of a set of values.

• Higher standard deviation indicates more spread out data points, while lower standard deviation indicates data points are closer to the mean.

• It is commonly used in quality con...read more

To clear NCR, identify root cause, implement corrective actions, verify effectiveness, and close out the NCR.

• Identify the root cause of the non-conformance.

• Implement corrective actions to address the root cause.

• Verify the effectiveness of the corrective actions through testing or inspection.

• Close out the NCR once the corrective actions have been successful.

• Document all steps taken in the NCR clearance process.

Testing procedure for coarse aggregate involves determining its physical properties and quality through various tests.

• Conduct sieve analysis to determine particle size distribution

• Perform specific gravity and absorption test to assess porosity

• Check for shape, surface texture, and angularity through visual inspection

• Test for resistance to abrasion and impact to evaluate durability

Silt content limit as per IS code is 3% for fine aggregate.

• Silt content limit for fine aggregate as per IS code is 3%.

• Excessive silt content can affect the quality of concrete.

• Silt content can be determined by conducting a sieve analysis test.