Lea Associates South Asia Interview Questions, Process, and Tips

The physical properties of soil, GSB, and WMM materials can be tested through various methods.

• Particle size distribution test

• Moisture content test

• Specific gravity test

• Compaction test

• California Bearing Ratio (CBR) test

• Permeability test

• Shear strength test

The testing procedure for determining the physical properties of fresh and hardened concrete involves various tests.

• For fresh concrete, tests like slump test, air content test, and temperature test are conducted.

• For hardened concrete, tests like compressive strength test, flexural strength test, and water absorption test are conducted.

• Other tests may include density test, porosity test, and shrinkage test.

• These tests h...read more

The weight of green concrete varies depending on the mix design and components used.

• The weight of green concrete typically ranges from 140 to 150 pounds per cubic foot.

• Factors such as the type and amount of aggregates, cement, water, and admixtures used can affect the weight.

• Lightweight concrete can have a lower weight, while high-density concrete can be heavier.

• The weight of green concrete is important for structural

The formula for tensile strength of concrete is based on the cross-sectional area and maximum load applied.

• Tensile Strength = Maximum Load / Cross-sectional Area

• The units for tensile strength are typically in MPa (megapascals)

• Tensile strength is an important property of concrete for determining its ability to resist tension forces

• For example, if a concrete specimen with a cross-sectional area of 100 square millimeters ...read more

The water cement ratio of concrete refers to the ratio of the weight of water to the weight of cement used in a concrete mix.

• The water cement ratio is a crucial factor in determining the strength and durability of concrete.

• A lower water cement ratio results in stronger and more durable concrete.

• The ideal water cement ratio varies depending on the type of concrete mix and its intended use.

• For example, a typical water ce...read more

IS code of steel refers to the Indian Standard code for steel materials and products.

• IS 2062:2011 - Steel for general structural purposes

• IS 1786:2008 - High strength deformed steel bars and wires for concrete reinforcement

• IS 8500:1991 - Structural steel - Microalloyed (medium and high strength qualities)

The code of girder stressing refers to the specifications and guidelines for determining the stress levels in girders used in civil engineering projects.

• The code of girder stressing typically includes information on material properties, load factors, and design criteria.

• Examples of codes for girder stressing include AASHTO LRFD Bridge Design Specifications and Eurocode 2.

• Engineers must follow the code of girder stressi...read more

Green concrete is a type of concrete that utilizes recycled materials or has a reduced carbon footprint.

• Green concrete can be made using recycled materials such as fly ash, slag, or recycled aggregate.

• It can also involve reducing the amount of cement used in the mixture, which helps lower carbon emissions.

• Green concrete is more sustainable and environmentally friendly compared to traditional concrete.

• Examples of green ...read more

The code of piling refers to the standards and guidelines used in the construction of piles for foundations.

• The code of piling includes specifications for the type of piles to be used, their dimensions, materials, installation methods, and load-bearing capacities.

• Examples of codes of piling include ACI 543R-12 - Guide to Design, Manufacture, and Installation of Concrete Piles and ASTM D3689 - Standard Test Methods for ...read more

BBS stands for Bar Bending Schedule, which is a detailed list of reinforcement bars in a structural element.

• BBS provides information on bar sizes, spacing, bending shapes, and quantities required for construction.

• It helps in estimating the total quantity of steel required for a project.

• BBS is essential for ensuring the proper placement and alignment of reinforcement bars in concrete structures.

• It is prepared based on s...read more

Earthling is a term used in electrical systems to refer to the connection of electrical equipment to the earth for safety purposes.

• Earthling is also known as grounding or earthing.

• It involves connecting electrical equipment to the earth using conductive materials like copper rods or plates.

• The purpose of earthling is to prevent electrical shock, protect equipment from lightning strikes, and ensure proper functioning of...read more