S.M. Consultants
10+ Balkrishna Industries Interview Questions and Answers
Q1. What should be the minimum grade of concrete in an RCC structure
The minimum grade of concrete in an RCC structure should be M20.
The minimum grade of concrete in an RCC structure is typically M20, which means the concrete mix has a compressive strength of 20 megapascals after 28 days.
Higher grades of concrete such as M25, M30, M35, etc., can also be used depending on the structural requirements.
The grade of concrete is specified in the structural design based on factors like the type of structure, load-bearing capacity, and environmental c...read more
Q2. What is the minimum % of Steel in a RCC Column
The minimum % of steel in a RCC column is typically around 1% to 2%.
The minimum % of steel in a RCC column is usually around 1% to 2% to provide adequate strength and reinforcement.
The exact percentage may vary depending on the design requirements and load conditions.
Using too little steel can compromise the structural integrity of the column, while using too much steel can lead to excessive costs.
For example, a typical RCC column may have a steel reinforcement percentage of ...read more
Q3. How to find the area of an irregular figure
To find the area of an irregular figure, break it down into simpler shapes and calculate their areas separately.
Break down the irregular figure into simpler shapes like rectangles, triangles, circles, etc.
Calculate the area of each simpler shape using the appropriate formula (e.g. area of a rectangle = length x width, area of a triangle = 0.5 x base x height).
Add up the areas of all the simpler shapes to get the total area of the irregular figure.
Q4. What is the unit weight of Steel
The unit weight of steel is typically around 7850 kg/m^3.
The unit weight of steel is commonly used in structural engineering to calculate the weight of steel members in a structure.
The unit weight of steel is approximately 7850 kg/m^3, but can vary slightly depending on the specific type of steel.
For example, the unit weight of stainless steel is around 7480 kg/m^3, while the unit weight of carbon steel is around 7850 kg/m^3.
Q5. A district road with a bituminous pavement has a horizontal curve of 1000 m for a design speed of 75 km ph. Then what will be the Super-elevation ?
The super-elevation of a district road with a 1000 m horizontal curve for a design speed of 75 km/h.
Super-elevation is the banking of a road to counteract the centrifugal force on vehicles during a curve.
The formula to calculate super-elevation is e = (v^2) / (g * r), where e is the super-elevation, v is the design speed in m/s, g is the acceleration due to gravity, and r is the radius of the curve.
First, convert the design speed from km/h to m/s: 75 km/h = 20.83 m/s.
Next, ca...read more
Q6. Reinforcement detailing of a retaining wall
Reinforcement detailing is crucial for the stability and durability of a retaining wall.
Reinforcement bars should be placed in both horizontal and vertical directions to resist lateral earth pressure.
Proper spacing and cover requirements must be followed as per design specifications.
Additional reinforcement like shear reinforcement or tie bars may be needed at specific locations.
Examples: Using stirrups at regular intervals, providing dowels at the base of the wall for anchor...read more
Q7. Find the volume of earthwork in a road
Volume of earthwork in a road can be calculated using cross-sectional area and length of the road.
Calculate the cross-sectional area of the road at regular intervals
Measure the length of the road
Multiply the cross-sectional area by the length to get the volume of earthwork
For example, if the cross-sectional area is 100 square meters and the length of the road is 1 kilometer, the volume of earthwork would be 100 cubic meters
Q8. What is the difference between a beam and a slab?
A beam is a horizontal or inclined structural member that carries loads perpendicular to its longitudinal axis, while a slab is a flat, horizontal structural element that is typically used in floors and roofs.
Beams are used to support vertical loads, while slabs are used to support horizontal loads.
Beams are typically deeper than they are wide, while slabs are typically wider than they are deep.
Beams are often used in bridges, buildings, and other structures, while slabs are ...read more
Q9. Reinforcement detailing of a column
Reinforcement detailing of a column involves specifying the size, spacing, and arrangement of steel bars to ensure structural strength.
Specify the size and grade of reinforcement bars to be used
Determine the spacing between the bars based on structural requirements
Ensure proper cover to protect the reinforcement from corrosion
Provide adequate lap lengths for splicing of bars
Consider any special detailing requirements such as seismic design provisions
Q10. Reinforcement detailing of a chajja
Reinforcement detailing of a chajja involves providing steel bars to support the overhanging structure.
Chajja is a projecting eave or sunshade typically found in Indian architecture.
Reinforcement detailing includes providing horizontal and vertical steel bars to support the chajja.
The size and spacing of the steel bars are determined based on the load and span of the chajja.
Proper anchoring of the steel bars into the main structure is crucial for structural stability.
Q11. Cover requirement for extreme condition
Cover requirement for extreme condition is essential for structural integrity and safety.
Ensure materials used can withstand extreme temperatures, pressures, or forces.
Consider factors like seismic activity, wind loads, and snow loads in design.
Include redundancy and fail-safe measures to prevent catastrophic failure.
Regular inspections and maintenance to ensure continued performance under extreme conditions.
Q12. Find the area of a Trapezium
The area of a trapezium can be calculated by taking the average of the two parallel sides and multiplying it by the height.
Find the length of the two parallel sides of the trapezium.
Determine the height of the trapezium, which is the perpendicular distance between the two parallel sides.
Use the formula: Area = (a + b) * h / 2, where a and b are the lengths of the parallel sides and h is the height.
Q13. WHAT IS THE DEFLECTION ANGLE OF TRANSCURVE ??
The deflection angle of a transcurve is the angle between the tangent lines at the beginning and end of the curve.
The deflection angle of a transcurve is typically denoted by delta (Δ).
It is the angle formed between the tangent lines at the beginning and end of the curve.
The deflection angle is used in civil engineering for designing curved roads, railways, and other infrastructure.
It helps in determining the curvature and alignment of the curve for smooth and safe transporta...read more
Q14. What are the design steps for a Column?
Design steps for a column include determining load requirements, selecting materials, calculating dimensions, and creating a detailed drawing.
Determine load requirements based on the intended use of the column
Select appropriate materials based on load requirements and aesthetic preferences
Calculate dimensions of the column based on load requirements and material properties
Create a detailed drawing of the column design, including all necessary dimensions and specifications
Q15. Draw the SFD and BMD for an overhanging beam?
SFD and BMD for an overhanging beam
Determine the reactions at the supports
Draw the SFD by taking sections and finding the net force
Draw the BMD by taking sections and finding the net moment
Account for any point loads or moments
Check for equilibrium at each section
Q16. what is zero correction in post-tensioning
Zero correction in post-tensioning refers to the adjustment made to the prestressing force to account for the elongation of the tendons.
Zero correction compensates for the elongation of the tendons due to the relaxation of steel and creep of concrete.
It ensures that the desired prestressing force is achieved after the relaxation of the tendons.
The correction is calculated based on the initial elongation of the tendons and the expected relaxation.
For example, if the initial el...read more
Q17. 1.Laboratory test? 2.Specific gravity of materials ? 3.IS codes, basic civil engineering ?
Q18. STRENGTH OF CONCRETE ?
Strength of concrete refers to its ability to withstand loads or stresses without breaking or deforming.
Strength of concrete is typically measured in terms of compressive strength, which is the maximum load it can bear before failure.
Factors affecting concrete strength include water-cement ratio, curing conditions, aggregate quality, and admixtures.
Concrete with higher strength is often used in structural applications like bridges, high-rise buildings, and dams.
Commonly used ...read more
Q19. What is ready mix concrete
Ready mix concrete is a mixture of cement, aggregates, water, and additives that is pre-mixed at a concrete batching plant and delivered to a construction site.
Ready mix concrete is produced in a centralized plant and then transported to the construction site in a truck mixer.
It is a convenient and efficient option for construction projects as it saves time and labor.
The quality and consistency of ready mix concrete are ensured through strict production and testing processes....read more
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