Rohan Builders Interview Questions and Answers

Concrete is a composite material made of cement, water, aggregates, and sometimes additives, used in construction.

• Concrete is a versatile and durable material used in construction for buildings, bridges, roads, and more

• It is made by mixing cement, water, and aggregates like sand and gravel

• Additives can be included to enhance specific properties of the concrete, such as strength or workability

• Once mixed, concrete harden...read more

BBS stands for Bar Bending Schedule, which is a detailed list of reinforcement bars to be used in a construction project.

• BBS includes details such as bar mark, type of bar, diameter, length, shape, and quantity.

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

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

• Components of BBS include bending shapes, cutting length,...read more

One meter is equal to 39.37 inches.

• One meter is equivalent to 100 centimeters.

• One inch is equal to 2.54 centimeters.

• To convert meters to inches, multiply by 39.37 (100 * 2.54).

Steel density is typically around 7.85 g/cm^3.

• Steel density is commonly expressed in grams per cubic centimeter (g/cm^3).

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

• For example, the density of stainless steel is around 7.9 g/cm^3, while carbon steel is around 7.85 g/cm^3.

The least count of a dumpy level staff reading is typically 0.01 ft or 1 mm.

• The least count is the smallest measurement that can be read on the scale of the dumpy level staff.

• For most dumpy levels, the least count is 0.01 ft or 1 mm.

• This means that the dumpy level can measure differences in elevation as small as 0.01 ft or 1 mm.

Concrete cover is provided for reinforcement to protect it from corrosion, fire, and other environmental factors.

• Concrete cover protects reinforcement from corrosion by preventing exposure to moisture and aggressive chemicals.

• It provides fire resistance by acting as a barrier between the reinforcement and the fire.

• Concrete cover helps in maintaining the bond between reinforcement and concrete, ensuring structural integ...read more

Civil engineers at site are responsible for overseeing construction projects, ensuring they are completed safely, on time, and within budget.

• Supervising construction activities to ensure compliance with design specifications and safety standards

• Managing resources and materials efficiently to meet project deadlines

• Collaborating with architects, contractors, and other stakeholders to resolve any issues that may arise

• Cond...read more

Minimum concrete grade for RCC work is M20.

• Minimum concrete grade for RCC work is M20 as per IS 456:2000.

• Higher grades like M25, M30, M35, etc. can also be used depending on structural requirements.

• Concrete grades indicate the compressive strength of concrete after 28 days of curing.

• Higher grades are used for structures requiring higher strength like bridges, high-rise buildings, etc.

The density of unit weight of cement is typically around 1440 kg/m^3.

• The density of unit weight of cement is commonly around 1440 kg/m^3.

• This value can vary slightly depending on the type and brand of cement.

• Density is a measure of mass per unit volume, in this case, kilograms per cubic meter.

The slump value of concrete for Normal RCC work is typically between 25-75 mm.

• The slump value of concrete for Normal RCC work is usually around 50 mm.

• The slump value can vary based on the specific requirements of the project and the mix design.

• A higher slump value indicates a more workable concrete mix, while a lower slump value may be used for specialized applications.

• It is important to test the slump value of concret...read more