L&T Construction Post Graduate Engineer Trainee Interview Questions and Answers

Q1. BBS of Stirups,
Ans. 
BBS of Stirrups is a reinforcement detailing technique used in construction.
• BBS stands for Bar Bending Schedule.

• Stirrups are used to provide lateral support to vertical reinforcement bars in concrete structures.

• BBS of Stirrups involves determining the quantity, shape, and dimensions of stirrups required in a structure.

• It helps in ensuring the structural integrity and strength of the concrete elements.

• Example: BBS of St...read more
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Q2. Conscrete strength in 7 days and 28 days
Ans. 
Concrete strength increases significantly from 7 days to 28 days.
• Concrete strength is measured in terms of compressive strength.

• At 7 days, concrete typically reaches about 70-80% of its 28-day strength.

• Factors like cement type, water-cement ratio, curing conditions, and aggregate properties affect the strength development.

• Higher strength concrete is often required for structural applications.

• Testing concrete strength a...read more
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Q3. Clear covers used in all items
Ans. 
Clear covers are used in all items.
• Clear covers provide visibility and protection to the items.

• They are commonly used in electronic devices, such as smartphones and tablets.

• Clear covers are also used in food packaging to showcase the product.

• In the automotive industry, clear covers are used for headlights and taillights.

• They can be made of materials like glass, plastic, or acrylic.
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Q4. Development length in compression member
Ans. 
Development length in compression member is the length of reinforcement required to transfer the stress from the steel to the concrete.
• Development length is determined by factors such as the strength of the concrete, the diameter of the reinforcement, and the bond strength between the steel and concrete.

• It is important to ensure that the development length is sufficient to prevent premature failure or slippage of the r...read more
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Q5. Find cutting length oc a rectangular stirrups , numerical
Ans. 
The cutting length of a rectangular stirrup is calculated based on the dimensions of the stirrup and the bending requirements.
• The cutting length is determined by adding the lengths of all sides of the stirrup and multiplying by the number of bends.

• For example, if the stirrup has sides measuring 10 cm, 15 cm, and 10 cm, and it requires 2 bends, the cutting length would be (10 + 15 + 10) * 2 = 70 cm.

• The cutting length is...read more
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Q1. Basic, salary discussion nothing else
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Strength basics

Q1. Civil + earthquake related questions
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