M/S PROTOMAC CONSTRUCTION Engineer Interview Questions and Answers

Lapping of beam is done by grinding the surface of the beam to achieve a smooth and flat finish.

• The beam is placed on a lapping machine with an abrasive surface.

• The machine moves the beam back and forth while the abrasive surface grinds away any imperfections.

• The process is repeated with finer and finer abrasives until the desired finish is achieved.

• Lapping can improve the strength and durability of the beam.

• It is comm...read more

The number of cube samples taken for 60 cum of concrete depends on the specifications and requirements of the project.

• The number of cube samples may vary depending on the project specifications and requirements.

• Typically, 3 to 5 cube samples are taken for every 100 cubic meters of concrete.

• The cube samples are taken to test the compressive strength of the concrete.

• The number of cube samples may also depend on the locat...read more

The percentage of bitumen in DBM varies depending on the specific mix design and project requirements.

• DBM stands for Dense Bituminous Macadam, which is a type of road construction material.

• The percentage of bitumen in DBM typically ranges from 4% to 6% by weight.

• The exact percentage of bitumen is determined based on factors such as traffic load, climate conditions, and desired durability.

• Higher percentages of bitumen a...read more