10+ L&T Heavy Civil Infrastructure Interview Questions and Answers

2d and 3d dimensions differ in the number of directions shown.

• 2d dimensions show two directions, typically x and y.

• 3d dimensions show three directions, typically x, y, and z.

• 2d drawings are often used for floor plans and elevations, while 3d models are used for visualizing complex structures.

• 2d dimensions are often used in engineering and architecture, while 3d dimensions are used in fields such as video game design and animation.

To find out bbs, rebar weight and scrap %, one can use formulas and measurements.

• Calculate the total length of rebar required for the project

• Determine the spacing and diameter of the rebar

• Use the weight formula to find out the weight of the rebar

• To find out scrap %, measure the length of unused rebar and divide by total length

• Keep track of all measurements and calculations for accurate results

To find stirrup bend degree, use trigonometry and geometry. To calculate length of cutting and bending, use formulas and measurements.

• Use trigonometry to find the angle of the bend.

• Use geometry to determine the length of the stirrup.

• To calculate the length of cutting and bending, use formulas such as L = 2(C + 2D) + 10% extra length.

• Measurements such as diameter and spacing are also important in determining the length of cutting and bending.

• Examples of formulas include L = 2(...read more

2D is flat, 3D has depth and volume

• 2D is two-dimensional, with only length and width

• 3D is three-dimensional, with length, width, and depth

• 2D is commonly used for drawings, while 3D is used for modeling and animation

• Examples of 2D include photographs and paintings, while examples of 3D include sculptures and video games

Safety in height of work can be maintained by following safety protocols and using proper equipment.

• Ensure workers are trained in safety procedures

• Use proper safety equipment such as harnesses and helmets

• Regularly inspect equipment and scaffolding

• Implement a safety plan and enforce it strictly

• Provide adequate lighting and signage

• Monitor weather conditions and adjust work accordingly

Formalities before concrete to be checked

• Ensure proper reinforcement is in place

• Check for proper formwork and its alignment

• Verify the mix design and slump of concrete

• Ensure proper curing measures are in place

• Check for any obstructions or debris in the concrete placement area

To check worker productivity, monitor their output, track their progress, and evaluate their efficiency.

• Monitor the quantity and quality of work completed by each worker.

• Track the progress of tasks assigned to workers and compare it with the set deadlines.

• Evaluate the efficiency of workers by analyzing their work methods and time management.

• Use performance metrics and key performance indicators (KPIs) to measure productivity.

• Provide feedback and coaching to workers to improve...read more

De-shuttering period depends on various factors such as type of concrete, temperature, humidity, and strength required.

• De-shuttering period is the time taken to remove the formwork or shuttering from the concrete after it has been poured.

• The period varies depending on the type of concrete used, temperature, humidity, and strength required.

• For example, for normal concrete, the de-shuttering period is usually 14-21 days, while for high-strength concrete, it can be up to 28 days...read more

Stress is an internal force per unit area within a material, while pressure is an external force per unit area exerted on a surface.

• Stress is a measure of the internal resistance of a material to deformation, while pressure is the force exerted on a surface.

• Stress can be caused by external forces or internal forces within a material, while pressure is typically caused by external forces.

• Stress is a scalar quantity, while pressure is a vector quantity with both magnitude and d...read more

2 stroke engines have simpler design but less efficient than 4 stroke engines. Pistons are made of aluminum alloy for light weight.

• 2 stroke engines have only two strokes (intake/compression and power/exhaust) while 4 stroke engines have four strokes (intake, compression, power, and exhaust).

• 2 stroke engines have simpler design and are lighter but less efficient than 4 stroke engines.

• Pistons are made of aluminum alloy for light weight and good heat dissipation.

• Pistons are a cr...read more

IRC plan refers to Indian Road Congress plan which provides guidelines for road construction and design.

• IRC plan is a set of guidelines and standards for road construction and design in India.

• It covers various aspects such as road alignment, pavement design, drainage, and traffic signs.

• The latest IRC plan is IRC:SP:73-2015 which provides updated standards for road infrastructure.

• Engineers and contractors refer to IRC plans to ensure that road projects meet safety and quality ...read more

The number of piles used and length of span depend on the specific project requirements.

• The number of piles used will depend on the load capacity required for the structure.

• The length of span will depend on the distance between the supports and the load capacity required.

• Factors such as soil conditions, environmental factors, and budget will also impact the number of piles and length of span.

• For example, a bridge spanning a river may require more piles and a longer span than ...read more

The question is about types of beams and advantages, and the height of a cycle tire.

• Types of beams include cantilever, simply supported, fixed, and continuous beams.

• Advantages of beams include their ability to support weight and distribute loads evenly.

• The height of a cycle tire varies depending on the type of bike and the size of the tire.

• For example, a road bike tire may have a height of 23mm, while a mountain bike tire may have a height of 2.5 inches.

Construction is the process of building or assembling infrastructure, buildings, or other structures.

• Construction involves planning, designing, and executing projects

• It includes activities such as excavation, foundation work, framing, and finishing

• Materials used in construction can vary from wood and concrete to steel and glass

• Examples of construction projects include building houses, bridges, roads, and skyscrapers

Initial setting time of cement is the time taken by cement to harden and attain a particular strength.

• Initial setting time is the time taken by cement to harden and attain a particular strength.

• It is the time from the moment water is added to the cement until the paste starts losing its plasticity.

• The initial setting time of cement is generally around 30 minutes to 1 hour.

• It is an important property of cement as it determines the time available for mixing, transporting, and p...read more

The initial time of settlement of concrete is typically 24-48 hours.

• The initial time of settlement refers to the time it takes for the concrete to begin to harden and set.

• Factors that can affect the initial time of settlement include temperature, humidity, and the mix design of the concrete.

• It is important to allow the concrete to settle properly before any further construction work is done on top of it.

• Typically, the initial time of settlement is around 24-48 hours, but this...read more