Assistant Highway Engineer Interview Questions and Answers for Freshers

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 optimal compaction and quality.

• It is important for the operator ...read more

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

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 result in poor bonding and durability.

• It is important to mo...read more

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 compaction in smaller areas.