Pivotal Consultancy Services Scaffolding Supervisor Interview Questions and Answers

Q1. Question regarding pile foundation, what is the density of bentonite
Ans. The density of the freshly prepared bentonite suspension shall be between 1.03 and 1.10 g/ml and before concrete is 1.12g/ml
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Q2. Question regarding well foundation. what is the rate of sinking well in your site
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Q1. What are your salary expectations?
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Q2. Why should we hire you?
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Q3. What is your family background?
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Q4. Where do you see yourself in 5 years?
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Q5. Tell me about yourself.
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Q1. Java hash map and how it works
Ans. 
Java hash map is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
• HashMap in Java implements the Map interface and allows null keys and values.

• It uses hashing to store and retrieve key-value pairs, providing O(1) time complexity for get() and put() operations.

• Example: HashMap map = new HashMap<>(); map.put("key", 1); int value = map.get("key");
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Q1. What is Surging?
Ans. 
Surging is a phenomenon in which a system experiences rapid and temporary increases in pressure or flow rate.
• Surging can occur in various systems such as pipelines, compressors, pumps, and turbines.

• It is often caused by sudden changes in demand, equipment malfunctions, or improper system design.

• Surging can lead to damage to equipment, reduced efficiency, and safety hazards.

• Examples include water hammer in pipelines and
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Q2. What is Froude No?
Ans. 
Froude number is a dimensionless number used to quantify the influence of gravity on fluid flow.
• Froude number is defined as the ratio of inertia force to gravitational force in a fluid flow.

• It is used to determine the type of flow (subcritical, critical, or supercritical) in open channel flow.

• Froude number is calculated as Fr = V / sqrt(g * d), where V is velocity, g is acceleration due to gravity, and d is depth of fl
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Q3. What is Weeping?
Ans. 
Weeping is the process of fluid leaking out of a solid material, often due to damage or excess moisture.
• Weeping can occur in materials such as wood, concrete, and metal.

• It is often a sign of structural damage or deterioration.

• Examples include water weeping from a crack in a wall or oil weeping from a car engine.

• Weeping can also refer to the shedding of tears in humans and animals.
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Q1. Draw basic PFD of a WTP plant including feed quality and all the sensors.
Ans. 
A basic PFD of a WTP plant including feed quality and sensors.
• Include feed quality parameters such as turbidity, pH, temperature, and flow rate

• Include sensors for monitoring parameters like chlorine levels, pressure, and conductivity

• Show the flow of water through various treatment processes like coagulation, flocculation, sedimentation, filtration, and disinfection
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Q2. What are the process checks done in Line testing of a 6inch dia pigging line including the calculations involved?
Ans. 
Process checks in line testing of a 6inch dia pigging line and associated calculations
• Pressure testing to ensure integrity of the line

• Flow testing to check for blockages or restrictions

• Calibration of pigging equipment for accurate results

• Calculations involve pressure drop, flow rate, and pigging efficiency

• Recording and analyzing data for future reference
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Q1. Why do u qant to leave ur previous company?
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Q2. How do u solve a matter of conflict during a Project meeting?
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Q1. Based on your previous work.
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Q1. Previous Employment Details
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Q1. A test conducted online mode
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Q1. What are different IS codes? Explain each IS code
Ans. 
IS codes are Indian Standards codes used for standardization of products, processes, and services.
• IS 456:2000 - Code of practice for plain and reinforced concrete

• IS 2062:2011 - Specification of steel for general structural purposes

• IS 800:2007 - Code of practice for general construction in steel

• IS 1343:2012 - Code of practice for prestressed concrete

• IS 1200:Part 1:1992 - Method of measurement of building and civil engin...read more
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Q2. Explain load cases for Qualification in STAAD
Ans. 
Load cases in STAAD are used for qualification purposes to ensure structural safety.
• Load cases are combinations of loads that a structure may experience during its lifetime.

• Qualification load cases are used to ensure that the structure can withstand the maximum expected loads.

• Examples of load cases include dead load, live load, wind load, seismic load, and temperature load.

• Each load case is analyzed separately to deter...read more
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Q3. Explain stiffness value
Ans. 
Stiffness value refers to the resistance of an object to deformation under an applied force.
• Stiffness is a measure of how much force is required to deform an object.

• It is often used in engineering to describe the rigidity of a material or structure.

• Stiffness can be calculated using Hooke's Law, which states that the force required to deform an object is proportional to the displacement.

• For example, a steel beam is stif...read more
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Hacker Rank test with medium difficulty

Q1. Technical discussion mainly around system design, different architectures, problem solving and coding question may be asked.
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A case study for a problem statement

The test was based on logical reasoning and verbal reasoning.

Q1. What is EVM and explain it to a layman?
Ans. 
EVM stands for Earned Value Management. It is a project management technique used to measure project performance and progress.
• EVM integrates scope, schedule, and cost to provide a comprehensive view of project performance.

• It compares the planned value (PV), earned value (EV), and actual cost (AC) to assess project health.

• PV represents the budgeted cost of the work scheduled, EV represents the budgeted cost of the work ...read more
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Q1. Where do you see yourself in the next 5 years?
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