Barbrik Project Limited (PRA Group) 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