Navayuga Engineering Company Interview Questions, Process, and Tips

The procedure for PSC girders casting involves preparing formwork, placing reinforcement, pouring concrete, curing, and demolding.

• Prepare formwork according to design specifications

• Place reinforcement bars as per structural drawings

• Pour concrete mix into the formwork

• Ensure proper vibration to remove air bubbles

• Cure the concrete for specified duration

• Demold the PSC girder after sufficient strength is achieved

Piling is a procedure used in construction to create a deep foundation by driving or drilling piles into the ground.

• Piling is used to transfer the load of a structure to deeper, more stable soil or rock layers.

• The procedure for piling involves several steps such as site investigation, pile design, installation, and testing.

• Site investigation includes soil testing to determine the type and properties of the soil.

• Pile de...read more

Piling is a construction technique used to strengthen the foundation of a structure by driving piles into the ground.

• Piling is a method of deep foundation used to transfer the load of a structure to deeper, more stable soil or rock layers.

• Piles are long, slender columns made of materials like concrete, steel, or timber.

• They are driven into the ground using specialized equipment such as pile drivers or hydraulic hammers...read more

PSC girders are pre-stressed concrete girders used in construction projects.

• PSC stands for Pre-Stressed Concrete.

• PSC girders are structural elements used to support loads in bridges, buildings, and other infrastructure projects.

• They are made by placing high-strength steel strands or bars under tension before pouring concrete around them.

• The pre-stressing of the steel helps to counteract the tensile forces that the gird...read more

Residence: New York, Qualification: Bachelor's degree in Civil Engineering, Hobbies: Reading, Experience: 5 years in planning and scheduling

• Residence: New York

• Qualification: Bachelor's degree in Civil Engineering

• Hobbies: Reading

• Experience: 5 years in planning and scheduling

M stands for 'Mix' in M20.

• M20 is a designation for a concrete mix with a compressive strength of 20 megapascals (MPa).

• The 'M' in M20 represents the word 'Mix', indicating that it is a mix of cement, sand, and aggregate.

• The number following 'M' in M20 denotes the compressive strength of the concrete mix.

• Different grades of concrete have different compressive strength requirements, and the 'M' designation helps in identi

Curing is necessary for concrete to ensure proper hydration and strength development.

• Curing prevents moisture loss from the concrete, allowing it to maintain its desired water-cement ratio.

• It helps in reducing shrinkage and cracking by providing a controlled environment for the concrete to cure.

• Curing promotes the formation of calcium silicate hydrate (CSH) gel, which contributes to the strength and durability of concr...read more

Water is added to concrete after casting to maintain moisture content and achieve early strength and resist creep formation.

• Adding water to concrete after casting helps to prevent excessive moisture loss.

• Maintaining moisture content in concrete is important for proper hydration of cement particles.

• Watering concrete can also help in reducing shrinkage and cracking.

• By providing moisture, the concrete gains strength faste...read more

The steps involved in concreting include site preparation, formwork, reinforcement, mixing, pouring, leveling, finishing, and curing.

• Site preparation involves clearing the area and ensuring proper drainage.

• Formwork is constructed to shape and support the concrete.

• Reinforcement is placed to provide strength to the concrete structure.

• Concrete ingredients are mixed in the correct proportions.

• The mixed concrete is poured i...read more

The allowable height for free fall for concrete depends on several factors.

• The allowable height for free fall for concrete is typically specified by the project specifications or industry standards.

• The height is influenced by factors such as the type of concrete mix, slump value, and the presence of reinforcing steel.

• For example, for normal weight concrete with a slump of 3 to 4 inches and no reinforcing steel, the all...read more

Segregation is the separation of coarse and fine particles in concrete mix, while bleeding is the upward movement of water in fresh concrete.

• Segregation occurs when the coarse aggregates settle down due to gravity, resulting in a non-uniform distribution of particles in the mix.

• Bleeding happens when excess water in the concrete mix rises to the surface, leaving behind a layer of water on top.

• Segregation can lead to a d...read more

Bleeding and segregation are common issues in concrete construction.

• Bleeding occurs when excess water in the concrete mixture rises to the surface, leaving behind a layer of water.

• Segregation happens when the coarse aggregates separate from the rest of the concrete mixture.

• Both bleeding and segregation can negatively impact the strength and durability of the concrete.

• Proper mix design, adequate compaction, and appropri...read more