GA Infra Private Limited Civil Site Engineer Interview Questions and Answers

A structure is a system or arrangement of parts that are interconnected and function together to support loads and resist forces.

• Structures can be man-made or natural

• They can be made of various materials such as steel, concrete, wood, etc.

• Examples include buildings, bridges, dams, towers, etc.

Types of concrete include ready-mix concrete, precast concrete, reinforced concrete, and shotcrete.

• Ready-mix concrete is produced in a batching plant and delivered to the construction site in a plastic condition.

• Precast concrete is cast in a reusable mold or form and cured in a controlled environment before being transported to the construction site.

• Reinforced concrete contains steel reinforcement bars to increase its ...read more

Grades of concrete refer to the strength of the concrete mix design.

• Grades of concrete are denoted by M10, M15, M20, etc. where 'M' stands for mix and the number denotes the compressive strength in MPa.

• Higher grade concrete has higher compressive strength and is used for structural purposes.

• Common grades include M25, M30, M35, and M40 for heavy-duty structures.

• The mix proportions vary for different grades of concrete t

The ratio of M25 grade concrete is 1:1:2.

• The ratio of M25 grade concrete is 1 part cement, 1 part sand, and 2 parts aggregate.

• This ratio is commonly used in construction for various applications.

• For example, if you need to make 1 cubic meter of M25 grade concrete, you would need 1/4 cubic meter of cement, 1/4 cubic meter of sand, and 1/2 cubic meter of aggregate.

Designing beams and columns involves determining the size, material, and layout to support the required loads.

• Consider the type of structure and the loads it will bear

• Calculate the required dimensions and reinforcement based on structural analysis

• Select appropriate materials such as steel or concrete

• Ensure proper connections and detailing for stability and safety

Limit state of serviceability refers to the condition where a structure is still functioning properly without any excessive deflection or deformation.

• Limit state of serviceability ensures that a structure remains usable and safe for occupants.

• It involves checking factors like deflection, vibration, cracking, and durability.

• For example, a bridge should not deflect excessively under the weight of traffic to maintain serv...read more

CODAL provisions for concrete refer to the guidelines and regulations set by relevant authorities, while commands of software are the specific instructions or functions within a software program.

• CODAL provisions for concrete include specifications for mix design, strength requirements, and durability standards.

• Commands of software for site engineers may include functions for structural analysis, quantity takeoff, and p...read more

Grades of concrete in a mixed batch can be estimated by performing a slump test and conducting compressive strength tests on samples.

• Perform a slump test to determine the workability of the concrete mix.

• Take samples from the mixed batch and cast test specimens for compressive strength testing.

• Conduct compressive strength tests on the specimens to determine the grade of concrete.

• Compare the test results with the standar

Site and laboratory tests on bricks and cement are essential for ensuring quality and durability of construction materials.

• Site tests for bricks include visual inspection, water absorption test, compressive strength test, and efflorescence test.

• Laboratory tests for bricks involve water absorption test, compressive strength test, efflorescence test, and soundness test.

• Site tests for cement include checking the color, sm...read more

Plastering work calculation involves determining the surface area of the wall and the thickness of the plaster.

• Calculate the surface area of the wall by multiplying the height and length of each wall segment.

• Determine the total surface area to be plastered by adding up the surface areas of all wall segments.

• Multiply the total surface area by the desired thickness of the plaster to get the volume of plaster needed.

• Consi...read more