Oil And Natural Gas Corporation Assistant Interview Questions and Answers

The diameter of the steel refers to the measurement of the cross-sectional size of the steel material.

• The diameter of the steel is an important parameter in construction engineering as it determines the strength and load-bearing capacity of the material.

• It is commonly used to specify the size of reinforcing bars (rebars) used in concrete structures.

• For example, a #4 rebar has a diameter of 1/2 inch, while a #8 rebar ha...read more

The minimum grade of concrete refers to the lowest strength that concrete can achieve.

• The minimum grade of concrete is determined by the project requirements and specifications.

• Concrete grades are denoted by a number followed by the letter 'M', representing the compressive strength in megapascals (MPa).

• Common minimum grades of concrete include M5, M10, M15, and M20.

• For example, M5 concrete has a minimum compressive str...read more

The period of open bag cement refers to the time during which cement can be used after the bag has been opened.

• The period of open bag cement depends on various factors such as humidity, temperature, and storage conditions.

• Generally, open bag cement should be used within a few hours to a few days.

• If the cement is exposed to moisture or air for an extended period, it may lose its effectiveness and strength.

• Proper storage...read more

There are several types of slabs used in construction, including one-way slab, two-way slab, flat slab, and waffle slab.

• One-way slab is supported on two opposite sides and the load is transferred in one direction.

• Two-way slab is supported on all four sides and the load is transferred in two directions.

• Flat slab is a reinforced concrete slab without beams, providing a flat soffit and easy formwork.

• Waffle slab consists o...read more