Larsen & Toubro Limited Junior Engineer Civil Interview Questions, Process, and Tips for Experienced

Workability is the ease with which a material can be worked or shaped.

• Workability is an important factor in construction materials such as concrete and mortar.

• It is affected by factors such as water content, aggregate size and shape, and temperature.

• A material with good workability is easy to mix, place, and finish.

• For example, a concrete mix with high workability can be easily poured into formwork and will flow to fil...read more

Mixing time in concrete is the duration required to achieve a homogeneous mixture of all the ingredients.

• Mixing time depends on the type of mixer used.

• It also depends on the quantity of ingredients and their properties.

• The ideal mixing time is usually specified by the manufacturer or as per the design requirements.

• Over-mixing can lead to a decrease in the strength of concrete.

• Under-mixing can result in the formation of

Dedo is a term used in construction for the leveling of the foundation of a building.

• Dedo is the process of marking the level of the foundation of a building.

• It is done to ensure that the foundation is level and stable.

• It is usually done using a spirit level and a measuring tape.

• Dedo is important for the safety and stability of the building.

• It is also important for the proper alignment of walls and columns.

• For example,...read more

IS code for RCC is IS 456:2000 and for mix design of concrete is IS 10262:2009.

• IS 456:2000 provides guidelines for the design and construction of reinforced concrete structures.

• IS 10262:2009 provides guidelines for the proportioning of concrete mixes based on the desired strength and workability.

• Both codes are important for ensuring the quality and durability of concrete structures.

The spacing of main bar and distribution bar depends on the design and load requirements of the structure.

• The spacing is determined by the structural engineer during the design phase.

• It varies depending on the size and shape of the structure, as well as the load it will bear.

• The spacing should be such that the reinforcement is evenly distributed throughout the structure.

• For example, in a slab, the spacing of main bars ...read more

The centre line method is a technique used in civil engineering for accurate measurement and layout of structures.

• Used for determining the layout of buildings and structures.

• Involves marking the center lines of walls, columns, and other elements.

• Helps in ensuring symmetry and alignment in construction.

• Example: For a rectangular building, center lines are marked along the length and width.

• Facilitates accurate calculatio

Bernoulli's Equation relates pressure, velocity, and height in fluid dynamics, illustrating energy conservation in flowing fluids.

• States that an increase in fluid speed occurs simultaneously with a decrease in pressure or potential energy.

• Mathematically expressed as P + 0.5ρv² + ρgh = constant, where P is pressure, ρ is fluid density, v is velocity, and h is height.

• Used in various applications like predicting airflow o...read more

The question is about the required materials and steel BBS, layout, and quantity of material for construction purposes.

• The required materials for construction depend on the type of project and its specifications.

• Steel BBS (Bar Bending Schedule) is used to determine the quantity of steel required for a project.

• Layout refers to the plan or design of the project, including the placement of materials and structures.

• Quantit...read more