Casagrand Civil Site Engineer Interview Questions and Answers

Grades of concrete refer to the strength of the concrete mix design.

• Grades of concrete are denoted by M10, M15, M20, etc. where M stands for mix and the number represents the compressive strength in N/mm^2.

• Higher grade concrete has higher compressive strength and is used for structural purposes.

• Common grades include M25, M30, M35, and M40 for heavy-duty structures like bridges and high-rise buildings.

Slump in concrete refers to the measure of consistency of freshly mixed concrete.

• Slump is determined by the amount of water in the concrete mix.

• It is measured by filling a cone-shaped mold with concrete, then lifting the mold to see how much the concrete slumps.

• Different types of slumps (true slump, shear slump, collapse slump) indicate different levels of workability and strength of the concrete mix.

• Slump test is comm...read more

Water cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix.

• 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 water cement ratio of 0.5 is commonly used ...read more

M20 grade concrete is a mix of 1 part cement, 1.5 parts sand, and 3 parts aggregate, with a compressive strength of 20 MPa.

• M20 grade concrete is commonly used in residential construction.

• It is a mix of 1 part cement, 1.5 parts sand, and 3 parts aggregate.

• The compressive strength of M20 grade concrete is 20 MPa.

• It is suitable for foundations, beams, columns, and slabs.

SBC stands for Safe Bearing Capacity.

• SBC is the maximum pressure that can be applied to the soil without causing shear failure.

• It is an important parameter in geotechnical engineering for designing foundations.

• SBC is determined through field tests like Standard Penetration Test (SPT) or Plate Load Test.

• The value of SBC varies for different types of soil, such as clay, sand, or gravel.

Soil bearing capacity is the maximum load that the soil can safely support without undergoing excessive settlement.

• Soil bearing capacity is influenced by factors such as soil type, moisture content, compaction, and depth.

• It is important to determine the soil bearing capacity before designing foundations for structures.

• Common methods to determine soil bearing capacity include plate load tests, standard penetration tests

Your company's commitment to innovation and sustainability aligns with my values and career goals.

• I am impressed by the company's track record of successful projects in the civil engineering field.

• Your company's focus on sustainability and green initiatives is something I am passionate about.

• I believe that working with your team will provide me with valuable learning opportunities and career growth.

• The positive work cu...read more

Steel cutting length is the length of steel bars required for construction purposes.

• Steel cutting length is calculated based on the dimensions of the structure and the required reinforcement.

• It is important to consider the bending and overlapping requirements when determining the cutting length.

• Steel cutting length can be calculated using formulas or software programs.

• For example, for a beam with a length of 5 meters a...read more

Cube filling rod is technically known as 'Tamping rod'.

• Also known as tamping rod

• Used to compact concrete in cube molds

• Helps in removing air voids and ensuring uniform density

• Typically made of steel or iron

• Standard length is 16 inches with a diameter of 5/8 inch

BBS stands for Bar Bending Schedule.

• BBS is a document that provides details of reinforcement cutting length, type, and size of bars used in construction.

• It helps in estimating the quantity of steel required for construction.

• BBS is essential for ensuring the structural integrity and strength of the building.

• Example: BBS includes information on the number of bars, their diameter, spacing, and placement in beams, columns,