IRON TRIANGLE LIMITED (BACK BONE OFFICE) Senior Qa and Qc Civil Engineer Interview Questions and Answers

Q1. What is the method for calculating the weight of a 12 mm diameter steel bar with a length of 12 meters?
Ans. 
The weight of a steel bar can be calculated using the formula: weight = volume x density
• Calculate the volume of the steel bar using the formula: volume = πr^2h

• Determine the density of steel, which is typically around 7850 kg/m^3

• Calculate the weight using the formula: weight = volume x density

• Substitute the values of radius (6 mm), length (12 meters), and density into the formula to find the weight
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Q2. What is the method to calculate the development length of steel?
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The development length of steel can be calculated using the formula specified in the relevant design code.
• The development length of steel is calculated based on the bond strength between the steel reinforcement and the concrete.

• The formula for calculating the development length is typically provided in the design code being used, such as ACI 318 for American standards or Eurocode 2 for European standards.

• Factors such a...read more
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Q1. Building construction
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Q1. Structure finishing work
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SOLAR ENERGY RELETED CIVIL CONSTRUCTION DISCUSSION

Q1. Work process, work ability, and all releted civil function.
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Q2. System of solar
Ans. 
Solar system refers to the collection of planets and other objects that orbit around a star, typically referring to our own solar system with the Sun at its center.
• The solar system consists of the Sun, eight planets, moons, asteroids, comets, and other celestial bodies.

• The planets in our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

• The Sun is the central star of our solar system, p...read more
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Q1. How to find grades of concrete which is already mixed
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Grades of concrete in a mixed batch can be estimated by performing a slump test and conducting compressive strength tests on samples.
• Perform a slump test to determine the workability of the concrete mix.

• Take samples from the mixed batch and cast test specimens for compressive strength testing.

• Conduct compressive strength tests on the specimens to determine the grade of concrete.

• Compare the test results with the standar
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Q2. What are the site and laboratory test on bricks and cement
Ans. 
Site and laboratory tests on bricks and cement are essential for ensuring quality and durability of construction materials.
• Site tests for bricks include visual inspection, water absorption test, compressive strength test, and efflorescence test.

• Laboratory tests for bricks involve water absorption test, compressive strength test, efflorescence test, and soundness test.

• Site tests for cement include checking the color, sm...read more
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Q3. Plastering work calculation for different size of wall
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Plastering work calculation involves determining the surface area of the wall and the thickness of the plaster.
• Calculate the surface area of the wall by multiplying the height and length of each wall segment.

• Determine the total surface area to be plastered by adding up the surface areas of all wall segments.

• Multiply the total surface area by the desired thickness of the plaster to get the volume of plaster needed.

• Consi...read more
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Q1. Construction answer
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Q2. Correct Answer
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Q3. Rcc work, shuttering, Excavation
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Q4. Safety work, Quality work
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Q5. Labour Mobilizacttion
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It is very difficult test to pass

Q1. Technical interview of concrete
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Q1. What is hydration process during casting of concrete?
Ans. 
Hydration process is the chemical reaction between cement and water which results in the hardening of concrete.
• Hydration process starts as soon as water is added to cement.

• The reaction produces heat and causes the mixture to harden and gain strength.

• The process continues for weeks and even months, resulting in a stronger and more durable concrete.

• The amount of water used in the mixture affects the hydration process and...read more
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Q2. Concrete strength depend ?
Ans. 
Concrete strength depends on various factors.
• Water-cement ratio

• Type and quality of cement

• Aggregate size and shape

• Curing conditions

• Mix design

• Age of concrete

• Temperature and humidity

• Presence of admixtures
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Q3. Why used send in concrete mixer
Ans. 
Water is added to concrete mixer to make the mixture more workable and to achieve the desired consistency.
• Water is added to hydrate the cement and activate the chemical reaction that causes it to harden

• The amount of water added affects the strength and durability of the concrete

• Too much water can weaken the concrete and cause cracking

• The water should be added gradually and mixed thoroughly to ensure even distribution

• Ot...read more
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