Dilip Buildcon QA QC Engineer Interview Questions and Answers

Grade of concrete refers to its strength and durability.

• Grade of concrete is determined by its compressive strength.

• It is denoted by a number followed by 'M' (e.g. M20, M25).

• Higher grade concrete has higher strength and durability.

• Different grades of concrete are used for different purposes.

• For example, M20 grade is commonly used for residential construction.

Mix design of concrete involves determining the proportions of ingredients to achieve desired properties.

• Mix design is the process of determining the proportions of cement, water, aggregates, and admixtures in concrete.

• It involves considering factors such as strength, workability, durability, and economy.

• Various methods like the ACI method, British method, and DOE method can be used for mix design.

• The mix design proces...read more

PWHT stands for Post Weld Heat Treatment, a process used to reduce residual stresses and improve the mechanical properties of welded joints.

• PWHT involves heating the welded component to a specific temperature for a certain period of time, followed by controlled cooling.

• The process helps to eliminate hydrogen cracking, improve toughness, and reduce distortion in the welded joint.

• Common methods of PWHT include furnace he...read more

WQT range refers to the range of values for Water Quality Testing in a specific context.

• WQT range can vary depending on the parameters being tested, such as pH, turbidity, dissolved oxygen, etc.

• For example, the WQT range for pH in drinking water may be 6.5-8.5.

• Monitoring and maintaining WQT range is crucial for ensuring safe and clean water supply.

• Regular testing and analysis of water samples help in determining if the

LPT acceptance criteria ensure that the test results meet specified requirements.

• Test results must meet specified requirements outlined in the acceptance criteria

• Acceptance criteria should be clearly defined and documented

• Criteria may include specific performance metrics or thresholds

• Examples: minimum tensile strength, maximum elongation percentage

QA focuses on preventing defects while QC focuses on identifying and fixing defects.

• QA is a process-oriented approach that ensures quality is built into the product from the beginning

• QC is a product-oriented approach that involves testing and inspecting the product to identify defects

• QA is proactive while QC is reactive

• QA involves continuous improvement while QC involves finding and fixing defects

• Examples of QA activit...read more

I chose the QC department because of my passion for ensuring quality and my attention to detail.

• I have always been meticulous and detail-oriented, which are essential qualities for a QC engineer.

• I enjoy the process of identifying and resolving quality issues to improve overall product performance.

• I find satisfaction in ensuring that products meet or exceed customer expectations.

• I believe that quality control plays a cr...read more

I investigate the root cause, propose corrective actions, and ensure implementation to prevent recurrence.

• Identify the root cause of the NCR

• Propose corrective actions to prevent recurrence

• Ensure implementation of corrective actions

• Document the NCR and corrective actions taken

• Communicate with relevant stakeholders

Soil and concrete strength testing involves several steps including sample collection, preparation, and testing.

• Collect soil and concrete samples from the site

• Prepare the samples for testing by drying and crushing them

• Perform compression tests on concrete samples to determine strength

• Perform triaxial or unconfined compression tests on soil samples to determine strength

• Record and analyze the test results to ensure compl

To convince a client representative on a critical situation, it is important to communicate effectively, provide evidence and solutions, and build trust.

• Listen actively to the client representative's concerns and understand their perspective.

• Clearly explain the critical situation, its impact, and potential risks.

• Present evidence such as test results, data analysis, or documentation to support your claims.

• Offer alternat...read more

Target mean strength of M-35 Grade concrete is 35 MPa.

• The target mean strength of M-35 Grade concrete is 35 MPa.

• M-35 Grade concrete is designed for structural applications requiring high strength.

• Quality control measures should be in place to ensure the concrete meets the target strength.

Soil compaction percentage in embankment typically ranges from 90% to 95% depending on the type of soil and project specifications.

• Soil compaction percentage in embankment is usually between 90% to 95%

• The exact percentage may vary based on the type of soil being compacted

• Project specifications and requirements will dictate the specific compaction percentage to be achieved