Phoenix Construction Intern Interview Questions and Answers

There are various grades of steel based on their composition and properties.

• Carbon steel: Contains carbon as the main alloying element.

• Stainless steel: Contains chromium and nickel for corrosion resistance.

• Tool steel: Designed for making tools with high hardness and wear resistance.

• Alloy steel: Contains additional elements like manganese, silicon, or copper for improved strength or heat resistance.

• High-speed steel: Use...read more

The grade of concrete used in Burj Khalifa construction is Grade M70.

• The grade of concrete used in Burj Khalifa construction is M70.

• Grade M70 refers to concrete with a compressive strength of 70 megapascals (MPa).

• This high-strength concrete was necessary to support the immense height and weight of the building.

• The use of Grade M70 concrete allowed for thinner columns and reduced the overall weight of the structure.

• Othe...read more

Displacement methods and force methods are two approaches used in structural analysis to determine the response of a structure to external loads.

• Displacement methods involve solving for the displacements of the structure's nodes or elements.

• Force methods involve solving for the internal forces and moments within the structure.

• Displacement methods are often used for linear analysis, while force methods are used for nonl...read more

Ultimate stress is the maximum stress a material can withstand before failure, while working stress is the stress a material experiences during normal operation.

• Ultimate stress is the maximum stress a material can handle before it breaks or fails.

• Working stress is the stress a material experiences during its normal operation or use.

• Ultimate stress is determined through destructive testing, while working stress is calcu...read more

Steps to avoid punching shear

• Provide adequate shear reinforcement such as shear stirrups or shear links

• Increase the depth of the structural member

• Increase the concrete strength

• Provide proper edge and corner reinforcement

• Avoid concentrated loads near the edges of the member

The cover given in slab under moderate conditions refers to the thickness of concrete or other protective material above the reinforcement.

• The cover is typically specified in the design of reinforced concrete structures to provide protection against corrosion and fire.

• Under moderate conditions, the recommended cover for slabs is usually around 20-30 mm.

• The cover may vary depending on factors such as exposure to aggress...read more