10+ Interview Questions and Answers

The clearance between girder and ground depends on the design and specifications of the bridge.

• The clearance is determined by the height of the girder and the elevation of the ground.

• It is important to ensure that the clearance is sufficient for any vehicles or pedestrians passing underneath the bridge.

• The clearance may vary depending on the location and purpose of the bridge.

• For example, a highway bridge may have a higher clearance than a pedestrian bridge over a small strea...read more

The slump required depends on the specific project requirements and the type of concrete being used. Admixtures are used to modify the properties of concrete.

• Slump requirements vary based on project specifications and concrete mix design

• Admixtures are used to improve workability, strength, durability, or other properties of concrete

• Examples of admixtures include water reducers, accelerators, retarders, and air-entraining agents

Pile bents can be prevented by proper design, installation, and maintenance.

• Ensure proper soil investigation and design of pile foundation

• Use high-quality materials for pile construction

• Ensure proper installation techniques are followed

• Regularly inspect and maintain the pile foundation

• Consider using protective measures such as cathodic protection or coatings

• Monitor the structure for any signs of distress or movement

CHSL is used to determine the length of a pile while Pile Integrity Test is used to assess the integrity of a pile.

• CHSL (Cross Hole Sonic Logging) is used to determine the length and integrity of a pile by sending ultrasonic waves between tubes installed in the pile.

• Pile Integrity Test is used to assess the integrity of a pile by sending stress waves through the pile and analyzing the reflected waves to detect any defects or anomalies.

• CHSL is more commonly used for drilled sh...read more

Socketing criteria for piles in hard rock involves determining the depth of socket required based on rock strength and load capacity.

• Socketing depth should be at least 1-2 times the diameter of the pile for hard rock.

• Rock strength should be assessed using methods like rock core testing or Schmidt hammer test.

• Load capacity of the pile and expected loads should be considered when determining socketing criteria.

• Socketing criteria may vary based on specific project requirements a...read more

Quality of concrete can be checked through various tests and inspections.

• Perform slump test to check workability of concrete

• Conduct compressive strength test to assess the strength of concrete

• Check for air content to ensure proper mix design

• Inspect for cracks, honeycombing, segregation, and other visual defects

• Use non-destructive testing methods like ultrasonic pulse velocity testing

We are using reinforced concrete piles for this project.

• Reinforced concrete piles are commonly used for their strength and durability.

• They are ideal for projects that require deep foundations or support for heavy structures.

• Other types of piles include timber, steel, and composite piles.

• The choice of pile depends on factors such as soil conditions, load requirements, and cost.

• We have selected reinforced concrete piles for this project based on our analysis of these factors.

A reaction pile is a type of foundation pile used to resist horizontal loads.

• It is installed at an angle to resist lateral forces.

• It is commonly used in retaining walls and bridge abutments.

• It can be made of steel, concrete, or timber.

• It is designed to transfer the load to the surrounding soil or rock.

• It is also known as a batter pile or inclined pile.

There are several types of piles used in construction, including driven piles, bored piles, and screw piles.

• Driven piles are hammered into the ground using a pile driver.

• Bored piles are created by drilling a hole and filling it with concrete.

• Screw piles are twisted into the ground using a hydraulic torque motor.

• Other types of piles include sheet piles, composite piles, and helical piles.

Stressing of I girder involves pre-tensioning steel strands before grouting to ensure structural integrity.

• Pre-tensioning steel strands to desired level of stress

• Grouting process to fill voids and bond strands to girder

• Monitoring stress levels during and after grouting

• Ensuring proper curing of grout for strength