Patel Infrastructure Interview Questions, Process, and Tips

Bituminous laying temperature is 130-150°C and rolling temperature is 80-100°C.

• Bituminous laying requires higher temperature than rolling.

• Temperature range ensures proper compaction and adhesion.

• Temperature can vary based on the type of bitumen and aggregate used.

• Proper temperature control is crucial for quality bituminous pavement.

Material suitability criteria for aggregate in construction projects.

• Aggregate size should be 26.5 mm or less.

• Water absorption should not exceed 2%.

• Soundness test should show Naso4 not more than 12% and Mgso4 not more than 18%.

• Angle of abrasion should be less than 35% with max FI & EI less than 35%.

• Equivalent weight of sand should not be less than 50%.

• Aggregate should not be alkaline reactive.

• MDD & MCC should be as per

The design procedure for DLC mix includes using M15 grade concrete, minimum cement content of 150 kg/cum, and achieving a compressive strength of at least 10 MPA after 7 days of curing.

• Use M15 grade concrete with aggregate and cement ratio of 12:1

• Minimum cement content of 150 kg/cum, or 120 kg/cum if fly ash content is over 20%

• Achieve a compressive strength of at least 10 MPA after 7 days of curing

• DLC mix should be hom...read more

The question is about the suitability of aggregate size and water absorption for PQC with a total thickness of 300mm and tolerance of +/-6mm.

• Aggregate size of 31.5mm is suitable for PQC with a total thickness of 300mm and tolerance of +/-6mm.

• Water absorption to GSB DLC being the same for PQC is also suitable.

• The suitability of the material is important for the successful completion of the project.

The design procedure for cement concrete includes minimum cement content, strength requirements, dowel bar and tie bar specifications, and surface preparation and curing techniques.

• Minimum cement content of 360 kg/cum if fly ash is more than 20%, and 310 kg/cum otherwise

• Flexural strength of cement concrete after 28-day curing should be 4.5 MPa, and compressive strength should be 40 MPa

• Dowel bar size of 32mm dia and 300...read more

The process of construction involves planning, designing, obtaining permits, sourcing materials, and executing the build.

• Planning: Develop a detailed plan outlining the project scope, timeline, and budget.

• Designing: Create blueprints and architectural drawings to guide the construction process.

• Obtaining permits: Secure necessary approvals from local authorities before starting construction.

• Sourcing materials: Procure h...read more

Types of construction include residential, commercial, industrial, and civil engineering.

• Residential construction involves building houses, apartments, and other living spaces.

• Commercial construction includes offices, retail stores, and restaurants.

• Industrial construction focuses on factories, warehouses, and manufacturing plants.

• Civil engineering construction involves infrastructure like roads, bridges, and dams.