10+ Vav World Interview Questions and Answers

There are several types of concrete, including plain, reinforced, pre-stressed, and lightweight.

• Plain concrete is the most basic type and is used for general construction purposes.

• Reinforced concrete has steel bars or mesh embedded in it to increase its strength.

• Pre-stressed concrete is compressed before use to increase its strength and durability.

• Lightweight concrete is made with lightweight aggregates, such as expanded clay or shale, to reduce its weight and increase its in...read more

The slump value for pumpable concrete varies depending on the mix design and application.

• Slump value is the measure of the consistency of concrete.

• Pumpable concrete typically has a higher slump value than traditional concrete.

• The slump value for pumpable concrete can range from 150mm to 200mm.

• The mix design and application will determine the appropriate slump value for pumpable concrete.

Tests carried out on aggregates

• Sieve analysis to determine particle size distribution

• Water absorption test to measure the porosity of aggregates

• Aggregate crushing value test to measure the strength of aggregates

• Los Angeles abrasion test to measure the resistance to wear and tear

• Soundness test to measure the resistance to weathering

• Alkali-silica reaction test to determine the potential for harmful chemical reaction

• Organic impurities test to detect the presence of organic matte...read more

Tests used for checking the bearing capacity of soil include plate load test, standard penetration test, and cone penetration test.

• Plate load test: Measures the load-bearing capacity of soil by applying a load on a steel plate placed on the ground surface.

• Standard penetration test: Determines the resistance of soil to penetration by a standard sampler driven by a standard hammer.

• Cone penetration test: Measures the resistance of soil to penetration by a cone-shaped penetromete...read more

I have used M50 grade of concrete in a construction project.

• I have experience in working with high-grade concrete such as M50.

• I have knowledge of the properties and characteristics of different grades of concrete.

• I have worked on a construction project where M50 grade of concrete was used for the foundation.

• I understand the importance of using the right grade of concrete for different types of structures.

Slump is measured by placing a slump cone on a flat surface and filling it with concrete. The cone is then lifted and the slump is measured.

• Place a slump cone on a flat surface

• Fill the cone with concrete in three layers

• Compact each layer with a steel rod

• Remove the excess concrete from the top of the cone

• Lift the cone vertically and measure the slump

• Repeat the process for consistency

W/c ratio is the ratio of water to cement in concrete. Admixtures like superplasticizer can improve concrete without changing w/c ratio.

• W/c ratio is a crucial factor in determining the strength and durability of concrete.

• It is the ratio of the weight of water to the weight of cement used in the mix.

• A lower w/c ratio means stronger and more durable concrete.

• Admixtures like superplasticizer can improve workability, reduce water content, and increase strength without changing w/...read more

Draw the work breakdown structure for a ROOM with foundation

• Foundation: excavation, concrete pouring, reinforcement

• Walls: framing, insulation, drywall

• Roof: framing, sheathing, shingles

• Flooring: subfloor, flooring material

• Electrical: wiring, outlets, switches

• Plumbing: pipes, fixtures

• Finishing: painting, trim, hardware

Project management refers to the process of planning, organizing, and overseeing resources to achieve specific goals within a defined timeline.

• It involves defining project goals and objectives

• Creating a detailed project plan with timelines and milestones

• Assigning tasks and responsibilities to team members

• Monitoring progress and making adjustments as needed

• Ensuring that the project is completed on time, within budget, and meets the desired quality standards

• Examples include con...read more

Workability of concrete refers to its ease of mixing, placing, and compacting.

• Workability is a crucial property of concrete that affects its strength, durability, and appearance.

• It is influenced by factors such as water-cement ratio, aggregate size and shape, and admixtures.

• Concrete with good workability can be easily placed and compacted without segregation or bleeding.

• Various tests such as slump test, flow test, and compaction factor test are used to measure workability.

• Wor...read more

SFD and BMD are diagrams used to determine the internal forces and bending moments in a beam.

• SFD (Shear Force Diagram) shows the variation of shear force along the length of the beam.

• BMD (Bending Moment Diagram) shows the variation of bending moment along the length of the beam.

• SFD and BMD are important in designing and analyzing structures.

• SFD and BMD can be used to determine the maximum shear force and bending moment in a beam.

• SFD and BMD can also be used to determine the l...read more

CPM stands for Critical Path Method and PERT stands for Program Evaluation and Review Technique.

• CPM is a project management technique used to determine the longest path of planned activities to complete a project.

• PERT is a project management technique used to analyze and represent the tasks involved in completing a project.

• Both CPM and PERT are used to estimate project duration, identify critical activities, and manage project schedules.

• CPM and PERT are commonly used in const...read more

Bleeding is the process of removing excess air from a hydraulic system.

• Bleeding is necessary to ensure proper functioning of hydraulic systems.

• It involves removing air bubbles from the system by opening valves or using a vacuum pump.

• Bleeding is commonly done in brake systems to ensure proper braking performance.

• It can also be done in cooling systems to prevent overheating.

• Bleeding is important to prevent damage to the system and ensure safety.

The interested subjects for a Graduate Engineer Trainee may include engineering fundamentals, mathematics, physics, computer science, and specialized subjects related to the trainee's field of interest.

• Engineering fundamentals

• Mathematics

• Physics

• Computer science

• Specialized subjects related to the trainee's field of interest

Design of slab and beam involves calculating loads, selecting materials, and determining dimensions.

• Calculate loads on the slab and beam

• Select appropriate materials for the slab and beam

• Determine the dimensions of the slab and beam

• Consider factors such as span, deflection, and cracking

• Ensure compliance with building codes and regulations