D.p. Jain & Co. Infrastructure Pvt . Apprentice Engineer Interview Questions and Answers

I am Loganathan Gangadharan I Finished diploma in civil engineering with 10 years experience in Construction Field. Building background to eat not come down

The lapping length for a 12 mm steel rod used in construction is typically 60 times the diameter of the rod.

• Lapping length is usually 60 times the diameter of the steel rod

• For a 12 mm steel rod, the lapping length would be 12 mm x 60 = 720 mm

• Lapping is done to ensure continuity and strength in the reinforcement

In Oman, commonly used footings include spread footings, strip footings, and raft footings.

• Spread footings are used for individual columns or walls and distribute the load over a larger area.

• Strip footings are continuous footings that support a line of columns or walls.

• Raft footings are used for large or irregularly shaped structures to distribute the load over a wider area.

• In Oman, due to the sandy soil conditions, de...read more

To rectify a broken concrete floor, materials like concrete mix, epoxy resin, or self-leveling compound can be used.

• Use concrete mix to fill in the broken areas and level the floor.

• Apply epoxy resin to seal cracks and strengthen the floor.

• Consider using self-leveling compound for a smooth and even surface.

• Ensure proper preparation and cleaning of the floor before applying any material.

• Consult with a structural engineer

Concrete setting times can vary depending on factors like temperature and mix design.

• Concrete typically sets within 24-48 hours, but continues to harden over time.

• Factors affecting setting time include temperature, humidity, and mix design.

• For example, in hot weather, concrete may set faster, while in cold weather it may take longer.

• Accelerators or retarders can be added to the mix to adjust setting times as needed.

Pile heads are removed to allow for further construction or to ensure proper load transfer to the foundation.

• To prepare for further construction on top of the piles

• To ensure proper load transfer to the foundation

• To facilitate the installation of pile caps or beams

• To adjust the pile length if necessary

There are four deductions of 90 degree angles.

• A 90 degree angle is formed when two lines intersect at a right angle.

• In a square, all four angles are 90 degrees.

• In a rectangle, opposite angles are 90 degrees.

• In a right triangle, one angle is always 90 degrees.

Static load test is used to measure the load capacity of a structure under a constant load, while dynamic load test is used to measure the response of a structure to varying loads.

• Static load test involves applying a constant load to a structure and measuring its response over time.

• Dynamic load test involves applying varying loads to a structure to simulate real-life conditions.

• Static load test helps determine the maxi...read more

The number of tolerance of pile load test depends on the specific project requirements and standards.

• The number of tolerance of pile load test can vary based on the project specifications and standards.

• Typically, a tolerance of +/- 5% to +/- 10% is considered acceptable for pile load tests.

• Some projects may have more stringent tolerance requirements depending on the criticality of the structure.

• It is important to refer...read more

Bentonite has a range density of 17-22 lb/gal and is used in civil engineering for drilling fluid, grouting, and sealing purposes.

• Range density of bentonite is typically between 17-22 lb/gal.

• Bentonite is used in civil engineering for various purposes such as drilling fluid, grouting, and sealing.

• The range density of bentonite is important for determining its effectiveness in different applications.

• Higher range density ...read more