L. N. Malviya Infra Projects Group Interview Questions and Answers

Q1. What is your name
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Q2. What is the bitumen percentage in DBM
Ans. 
The bitumen percentage in Dense Bituminous Macadam (DBM) typically ranges from 5-7%.
• Bitumen percentage in DBM is usually around 5-7%

• The exact percentage may vary based on the specific mix design and project requirements

• Higher bitumen content provides better durability and resistance to weathering

• Lower bitumen content may result in a more rigid mix but may be prone to cracking

• Proper testing and quality control measures ...read more
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Basic knowledge of IQ and quantitative and basic reasoning.

Q1. Basic to advanced knowledge about civil engineering Highway, transportation.
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Q1. Personal details and salary discussion
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Q1. What is required slum for PQC?
Ans. 
Slump is the required consistency of PQC (Pavement Quality Concrete) for proper construction.
• The required slump for PQC typically ranges from 20-40 mm.

• Slump test should be conducted at the site to ensure the correct consistency.

• Proper slump ensures good workability and strength of the concrete.

• If the slump is too high, it may lead to segregation and bleeding issues.

• If the slump is too low, it may result in difficulty i...read more
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Q2. What is laying temprature for DBM?
Ans. 
The laying temperature for DBM (Dense Bituminous Macadam) typically ranges from 140 to 160 degrees Celsius.
• Laying temperature for DBM is crucial for achieving proper compaction and bonding of the material.

• The temperature range of 140-160 degrees Celsius ensures that the DBM is workable and can be compacted effectively.

• Excessive heat can lead to premature cooling and inadequate compaction, while lower temperatures may r...read more
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Q3. What is the maximum thickness of a layer?
Ans. 
The maximum thickness of a layer in highway engineering is typically around 300 mm.
• Maximum thickness is usually limited to around 300 mm for practical and cost-effective reasons

• Thicker layers may lead to excessive settlement or instability

• Thinner layers may not provide adequate strength or durability

• Examples: Base course layer in flexible pavement is typically around 150-300 mm thick
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Q4. What is the maximum speed of a compactor
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The maximum speed of a compactor varies depending on the type and model, but typically ranges from 2 to 6 miles per hour.
• The maximum speed of a compactor is usually between 2 to 6 miles per hour.

• The speed can vary based on the type of compactor (e.g. vibratory, smooth drum) and the model.

• Higher speed compactors are often used for larger projects where efficiency is key.

• Lower speed compactors are used for more precise c...read more
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Q5. What should be the maximum speed of paver during DBM LAYING?
Ans. 
The maximum speed of paver during DBM laying should be around 2-3 km/h to ensure proper compaction and quality of the road surface.
• The maximum speed of the paver should be controlled to allow for proper compaction of the DBM layer.

• Excessive speed can lead to inadequate compaction, resulting in a weaker road surface and potential future issues.

• A speed of 2-3 km/h is generally recommended for DBM laying to achieve optima...read more
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Q1. What do you know about SLA
Ans. 
SLA, or Service Level Agreement, defines expected service standards between providers and clients.
• SLA outlines specific metrics like uptime, response time, and resolution time.

• For example, an SLA might guarantee 99.9% uptime for a web service.

• SLAs can include penalties for non-compliance, such as service credits.

• They are crucial in IT services, cloud computing, and managed services.

• Regular reviews of SLAs help ensure t...read more
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Q2. What is CCH
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Q3. What is Traffic sampling
Ans. 
Traffic sampling is a method used to analyze network traffic by capturing a subset of data packets for evaluation.
• Traffic sampling helps in reducing the volume of data to be analyzed, making it more manageable.

• It allows for real-time monitoring of network performance without overwhelming resources.

• For example, a network might sample 1 out of every 100 packets to assess overall traffic patterns.

• Traffic sampling can be u...read more
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Q1. Works with clients or contractors
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Q1. What is Avenue and Median Plantation
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Q1. What are load action on bridge?
Ans. 
Load actions on a bridge refer to the various forces and weights that act on the structure, including dead loads, live loads, wind loads, and seismic loads.
• Dead loads are the permanent weight of the bridge structure itself, such as the weight of the beams, deck, and piers.

• Live loads are the temporary loads that move across the bridge, such as vehicles, pedestrians, and traffic.

• Wind loads are the forces exerted by wind ...read more
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