Rahee Infratech Interview Questions, Process, and Tips

The concrete grade used in BLT is Grade M25.

• Grade M25 concrete is used in BLT.

• The concrete grade is determined based on the required strength and durability of the structure.

• Concrete grades are specified by the mix proportions of cement, sand, and aggregate.

• Grade M25 concrete has a compressive strength of 25 megapascals (MPa) after 28 days of curing.

• Other common concrete grades include M10, M15, M20, M30, etc.

Wirsine formula is used in track engineering to calculate the required block spacing.

• Wirsine formula is a mathematical equation used in track engineering.

• It helps in determining the optimal spacing between blocks on a track.

• The formula takes into account factors like train speed, deceleration rate, and safety requirements.

• The block spacing is calculated to ensure sufficient distance between trains for safe operation.

• Th...read more

The length of composite girder bridges varies depending on factors such as span length, load capacity, and design requirements.

• The length of composite girder bridges can range from a few meters to several hundred meters.

• Longer spans typically require larger girders and more complex design considerations.

• Examples of composite girder bridges include the Penobscot Narrows Bridge in Maine, USA, with a main span length of 3...read more

HSFG bolt stands for High Strength Friction Grip bolt, commonly used in structural engineering for connecting steel components.

• HSFG bolt is a type of bolt that relies on friction between the bolt head and the connected material to prevent loosening.

• These bolts are commonly used in structural steel connections due to their high strength and reliability.

• HSFG bolts are tightened to a specific torque to ensure proper clamp...read more

The initial and final setting time of an ideal cement mix refers to the time it takes for the cement to begin to harden and fully harden, respectively.

• The initial setting time is the time it takes for the cement to lose its plasticity and become rigid enough to resist certain pressures.

• The final setting time is the time it takes for the cement to fully harden and achieve its maximum strength.

• The initial setting time is...read more

Piles can be classified based on their function and use.

• Piles for supporting structures: These piles are used to support buildings, bridges, and other structures.

• Piles for retaining walls: These piles are used to provide stability to retaining walls and prevent soil erosion.

• Piles for foundation improvement: These piles are used to improve the load-bearing capacity of weak soils.

• Piles for marine structures: These piles ...read more

Clear cover to main reinforcement is the distance between the outer surface of concrete and the nearest surface of the reinforcement.

• Clear cover is important to protect the reinforcement from corrosion and fire damage.

• It is specified in the design and varies depending on the type of structure and environmental conditions.

• For example, in a residential building, the clear cover may be around 25mm to 50mm.

• In a marine stru...read more