Kalpataru Limited Interview Questions and Answers

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Q1. Mechanical process , Site engineer
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Q2. Mechanical type , oil and gas
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Q1. Mechanical Question, Oil and gas
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Q1. What is the grade of concrete
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The grade of concrete refers to its strength and is determined by the ratio of cement to sand to aggregate.
• The grade of concrete is typically denoted by a number followed by the letter 'M', such as M20, M30, etc.

• The number in the grade represents the compressive strength of the concrete in megapascals (MPa) after 28 days of curing.

• For example, M20 concrete has a compressive strength of 20 MPa, while M30 concrete has a ...read more
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Q2. What is the unit used for estimating painting work?
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The unit used for estimating painting work is square feet.
• Square feet is commonly used to estimate the amount of paint needed for a project.

• Other units like square meters can also be used depending on the region.

• Calculations are based on the surface area to be painted.
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Q3. What you mean by RL in survey
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RL in survey stands for Reduced Level, which is the vertical distance between a point and a reference point.
• RL is used in surveying to determine the elevation of a point relative to a known reference point.

• It is commonly used in construction projects to ensure accurate leveling of structures and surfaces.

• RL can be calculated using leveling instruments such as a dumpy level or a theodolite.

• For example, if a benchmark ha...read more
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Q1. Types of cement
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Types of cement include Portland cement, rapid-hardening cement, and sulfate-resistant cement.
• Portland cement is the most common type and is used in general construction.

• Rapid-hardening cement sets quickly and is often used in repair work.

• Sulfate-resistant cement is used in areas where soil or water has high sulfate content.
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Q2. Size of columns
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The size of columns in civil engineering is determined based on the load they will support and the height of the structure.
• Columns are sized based on the load they will support, with larger loads requiring larger columns.

• The height of the structure also plays a role in determining column size, with taller structures requiring larger columns for stability.

• Factors such as material strength, column spacing, and building c...read more
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Q1. What is the full form of SBC
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Q2. Find different RLs from the given figure
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Different RLs can be found by measuring the vertical distance between points on the figure.
• Measure the vertical distance between points A and B to find RL AB

• Measure the vertical distance between points C and D to find RL CD

• Measure the vertical distance between points E and F to find RL EF
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Q1. What is the Diamter of TBM
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The diameter of a Tunnel Boring Machine (TBM) varies depending on the project requirements and can range from a few meters to over 15 meters.
• The diameter of a TBM is typically determined by the size of the tunnel being constructed.

• TBMs used for subway tunnels may have a smaller diameter compared to those used for large transportation tunnels.

• Some TBMs can have diameters exceeding 15 meters for mega tunneling projects.

• T...read more
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Q1. What are the ASHRAE guidelines for designing HVAC systems?
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ASHRAE guidelines provide standards for HVAC system design, ensuring efficiency, comfort, and safety in various environments.
• ASHRAE Standard 62.1: Ventilation for Acceptable Indoor Air Quality - outlines minimum ventilation rates for different building types.

• ASHRAE Standard 90.1: Energy Standard for Buildings - sets energy efficiency requirements for HVAC systems to reduce energy consumption.

• ASHRAE Guideline 36: High-P...read more
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Q2. What are the guidelines for designing a car park ventilation and pressurization system in accordance with the National Building Code (NBC) and the National Fire Protection Association (NFPA)?
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Guidelines for car park ventilation and pressurization systems per NBC and NFPA ensure safety and efficiency.
• Ensure adequate air exchange rates to dilute vehicle emissions, typically 0.5 to 1.0 air changes per hour.

• Implement smoke control systems to manage smoke during a fire, using mechanical or natural ventilation methods.

• Design pressurization systems to prevent smoke infiltration into adjacent areas, maintaining a p...read more
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