Bridge Design Engineer Interview Questions and Answers

Design of PSC Girder involves several steps for both pre and post tensioned girders.

• Determine the span length and load requirements

• Select the cross-sectional shape and dimensions

• Calculate the required prestressing force and tendon layout

• Design the reinforcement for the non-prestressed section

• Analyze the girder for serviceability and ultimate limit states

• Check deflection, cracking, and shear capacity

• Prepare detailed drawings and specifications

• Fabricate and install the girder

Torsion in pier cap and girder design is considered by analyzing the distribution of torsional forces and designing the elements to resist them.

• Consider the distribution of torsional forces along the length of the pier cap and girder.

• Design the pier cap and girder to resist torsional forces by providing adequate reinforcement.

• Use software tools like STAAD.Pro or SAP2000 to analyze the torsional effects and optimize the design.

• Ensure proper detailing of reinforcement to accoun...read more

Deflection at x section in a beam with certain loading case.

• Calculate the bending moment at x section

• Use the bending moment equation to find the deflection

• Consider the type of beam and loading case

• Check for any assumptions made in the calculation

• Verify the results with appropriate software or manual calculations

Free length of pile can be calculated by subtracting the embedment depth from the total length of the pile.

• Calculate the total length of the pile

• Determine the embedment depth of the pile

• Subtract the embedment depth from the total length to get the free length