20+ L&T Construction Site Engineer Interview Questions and Answers

Questions related to site engineering including slump test, TBM, steel weight calculation, site supervision, BBS, concrete quantity calculation, and pipeline.

• Slump test measures the consistency of concrete. Procedure involves filling a slump cone with concrete and measuring the slump after removing the cone.

• TBM stands for Tunnel Boring Machine, used for excavating tunnels in soil or rock.

• Weight of steel can be calculated using the formula: weight = (d^2/162) x L, where d is d...read more

Safety measures at the site include wearing appropriate personal protective equipment, following safety protocols, conducting regular safety inspections, and providing safety training to all workers.

• Wearing appropriate personal protective equipment such as helmets, gloves, and safety shoes

• Following safety protocols and guidelines set by the company and regulatory bodies

• Conducting regular safety inspections to identify and address potential hazards

• Providing safety training to ...read more

There are various types of structures, including buildings, bridges, dams, tunnels, and towers.

• Structures can be classified based on their purpose, design, and materials used.

• Buildings can be further classified into residential, commercial, and industrial structures.

• Bridges can be classified into beam, arch, suspension, and cable-stayed bridges.

• Dams can be classified into gravity, arch, buttress, and embankment dams.

• Tunnels can be classified into cut-and-cover, bored, and imm...read more

There are two types of density construction: compacted and loose.

• Compacted density construction involves compressing the material to increase its density, such as in road construction.

• Loose density construction involves leaving the material in its natural state, such as in landscaping.

• The type of density construction used depends on the intended use of the material and the desired level of compaction.

• Other factors that may affect the type of density construction include the t...read more

Tests for construction joints include visual inspection, water tightness test, and load transfer test.

• Visual inspection to check for proper joint alignment and sealant application

• Water tightness test to ensure no water leakage through the joint

• Load transfer test to verify the joint can handle the intended load

• Other tests may include pull-out test, shear test, and compression test

• Testing frequency and methods may vary depending on the type of joint and project specifications

The beam with the highest thickness will depend on the specific design and requirements of the structure.

• The beam with the highest thickness will typically be a main load-bearing beam in the structure.

• Factors such as the span of the beam, the load it needs to support, and the material used will determine the required thickness.

• For example, a bridge beam supporting heavy traffic will likely have a higher thickness than a beam in a residential building.

Grab is a Southeast Asian ride-hailing, food delivery, and financial services company. The Pipeline is a program to develop tech talent.

• Grab is headquartered in Singapore and operates in 8 countries.

• It offers various services like ride-hailing, food delivery, and financial services.

• The Pipeline is a program to develop tech talent in Southeast Asia.

• It provides training and mentorship to aspiring tech professionals.

• The program also offers job opportunities at Grab and partner c...read more

Yes, I am ready for remote locations as I am adaptable and have experience working in challenging environments.

• I have previous experience working in remote locations.

• I am adaptable and can easily adjust to new environments.

• I am comfortable with limited resources and facilities.

• I am prepared for potential challenges such as limited communication and transportation options.

Different types of slabs foundation include raft, mat, flat plate, and waffle slab foundations.

• Raft foundation: a solid reinforced concrete slab that covers the entire area under a building

• Mat foundation: a thick concrete slab used to support heavy structures or buildings

• Flat plate foundation: a simple and economical type of foundation with a uniform thickness

• Waffle slab foundation: a type of foundation with grid-like beams that distribute loads evenly

Precommissioning tests of transformers ensure proper functioning and safety before energizing.

• Visual inspection of transformer and its components

• Measurement of insulation resistance

• Measurement of winding resistance

• Verification of transformer ratio and polarity

• Verification of oil level and quality

• Testing of protective devices

• Verification of grounding

• Functional testing of cooling system

• Verification of nameplate data

A propped cantilever beam is a type of beam that is supported at one end and has a support (prop) at some point along its length.

• Propped cantilever beams have a fixed support at one end and a prop at some point along the beam's length.

• The prop helps to reduce the bending moment and deflection at the free end of the beam.

• These beams are commonly used in construction to support overhanging structures or balconies.

• Examples of propped cantilever beams can be found in bridges, bal...read more

Density is the measure of mass per unit volume of a substance.

• It is a physical property of matter.

• It is calculated by dividing the mass of a substance by its volume.

• Units of density include kg/m³, g/cm³, and lb/ft³.

• Density can be used to identify substances and determine their purity.

• For example, gold has a density of 19.3 g/cm³, while aluminum has a density of 2.7 g/cm³.

Different types of slabs include one-way slab, two-way slab, flat slab, ribbed slab, waffle slab, and hollow core slab.

• One-way slab: supported on two opposite sides and bends in only one direction

• Two-way slab: supported on all four sides and bends in two directions

• Flat slab: without beams and supported directly on columns

• Ribbed slab: with ribs on the underside for added strength and reduced weight

• Waffle slab: with grid of ribs on the underside resembling a waffle

• Hollow core s...read more

Mortar is a mixture of cement, sand, and water used in construction. A circuit is a closed loop of electrical components.

• Mortar is a binding material used in construction to hold bricks or stones together.

• It is made by mixing cement, sand, and water in specific proportions.

• Mortar hardens over time and provides strength and stability to the structure.

• Circuits are pathways through which electricity flows.

• They consist of electrical components like wires, resistors, capacitors, a...read more

Design mix concrete is a mix of concrete prepared by a designer as per the required strength and durability, while nominal mix concrete is a mix of concrete prepared based on standard ratios without specific design requirements.

• Design mix concrete is prepared by a designer based on specific requirements for strength and durability.

• Nominal mix concrete is prepared based on standard ratios like 1:2:4 without specific design requirements.

• Design mix concrete is more precise and t...read more

Concrete mix design is the process of selecting suitable ingredients and determining their proportions to produce concrete with desired properties.

• Concrete mix design involves selecting the right combination of cement, aggregates, water, and admixtures.

• The proportions of each ingredient are determined based on the desired strength, workability, and durability of the concrete.

• Factors such as the type of project, environmental conditions, and available materials also influence ...read more

Knee bracing is a structural support used in construction to prevent lateral movement of beams or columns.

• Knee bracing is a diagonal member used to connect a vertical member to a horizontal member in a structure.

• It helps to resist lateral forces and prevent buckling or swaying of the structure.

• Knee bracing is commonly used in steel frame construction to provide stability and support.

• Examples include diagonal braces connecting columns to beams in a building frame.

Managing a team involves effective communication, delegation, motivation, and conflict resolution.

• Establish clear goals and expectations for the team

• Communicate regularly and openly with team members

• Delegate tasks based on team members' strengths and skills

• Provide feedback and recognition for good work

• Address conflicts and issues promptly and fairly

• Lead by example and demonstrate a positive attitude

• Encourage collaboration and teamwork

• Support professional development and growt...read more

A circuit is a closed loop or path through which electric current flows.

• A circuit consists of a power source, conductors, and a load.

• There are two types of circuits: series circuit and parallel circuit.

• In a series circuit, the current flows through each component in sequence.

• In a parallel circuit, the current splits and flows through multiple paths.

• Circuits can be found in various electrical devices and systems, such as lighting circuits, computer circuits, and automotive cir...read more

AC and DC are two types of electrical current. AC stands for Alternating Current and DC stands for Direct Current.

• AC (Alternating Current) is a type of electrical current that periodically changes direction.

• DC (Direct Current) is a type of electrical current that flows in only one direction.

• AC is commonly used in household electrical systems, while DC is used in batteries and electronic devices.

• AC can be easily converted to DC using a device called a rectifier.

• Examples of AC ...read more