Agi Infra Civil Site Engineer Interview Questions and Answers

Q1. Tests for concrete and cement
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Q2. Grades of concrete
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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.
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Q3. What is slump in concrete
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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
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Q4. What is water cement ratio
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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
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Q5. What is M20 grade concrete
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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.
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Be confidence, Be positive

Q1. About civil and execution work
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Q2. RCC,Shuttering, finishing, safety, quality
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Q3. -how many types of binding? -which grade of steel use for construction? -how to safely work on site?
Ans. 
There are two types of binding in construction - temporary binding and permanent binding. Grade of steel used for construction varies depending on the structural requirements. Safety on site can be ensured by following proper protocols and wearing appropriate safety gear.
• Two types of binding in construction: temporary binding (e.g. wire binding) and permanent binding (e.g. welding)

• Grade of steel used for construction d...read more
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Q4. -what's the process or start construction? -
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The process of starting construction involves planning, obtaining permits, site preparation, foundation construction, and building the structure.
• Develop a detailed construction plan outlining the scope, schedule, and budget.

• Obtain necessary permits and approvals from local authorities.

• Clear the construction site and prepare it for building.

• Construct the foundation of the structure, which may involve excavation and pour...read more
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Q5. -how to lap columns vertical & Beam bars?
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Columns and beam bars can be lapped vertically by overlapping the bars and securing them with appropriate reinforcement ties or splices.
• Overlap the vertical bars by a certain length as per design requirements

• Secure the overlapped bars using reinforcement ties or splices

• Ensure proper alignment and spacing of the lapped bars to maintain structural integrity

• Follow the design specifications and guidelines for lapping colum
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Q6. -how check slab shuttering?
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Slab shuttering can be checked by ensuring proper alignment, levelness, and support of formwork before pouring concrete.
• Check alignment of formwork using a string line or laser level

• Ensure levelness of formwork using a spirit level

• Check support of formwork by inspecting props and braces

• Verify dimensions and layout of slab formwork before pouring concrete
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Q1. 1.How to calculate concrete quantity in structure to ready for cas
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Calculating concrete quantity for a structure
• Determine the volume of the structure to be filled with concrete

• Calculate the required concrete mix ratio

• Multiply the volume by the mix ratio to get the total concrete quantity

• Add an extra 5-10% to account for wastage and spillage

• Consider the type of structure and its intended use when selecting the mix ratio
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Q2. What is steel density
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Steel density is the mass per unit volume of steel.
• Steel density is typically measured in kilograms per cubic meter (kg/m³).

• The density of steel can vary depending on the alloy and composition.

• The density of mild steel is around 7.85 g/cm³.

• High-strength low-alloy (HSLA) steel can have a density of up to 8.05 g/cm³.

• Stainless steel has a density of around 8 g/cm³.
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