Jacobs Engineering Group Senior Bridge Engineer Interview Questions and Answers

Q1. Structural site questions
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Q2. Fhinishing questions
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Q1. Structure MJB. MNB
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Sanik school G+2 , Quantity survey, estimation and costing

Q1. Estimation and costing,Bar Bending schedule, Quantity surveyor
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Q1. What are steps in design of PSC Girder, Pre n Post tensioned both.
Ans. 
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 dra...read more
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Q1. Which are the different types of slabs
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Different types of slabs include one-way slab, two-way slab, flat slab, ribbed slab, waffle slab, and hollow core slab.
• One-way slab: supported on two opposite sides and bends in only one direction

• Two-way slab: supported on all four sides and bends in two directions

• Flat slab: without beams and supported directly on columns

• Ribbed slab: with ribs on the underside for added strength and reduced weight

• Waffle slab: with grid...read more
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Q2. What are the different types of slabs foundation
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Different types of slabs foundation include raft, mat, flat plate, and waffle slab foundations.
• Raft foundation: a solid reinforced concrete slab that covers the entire area under a building

• Mat foundation: a thick concrete slab used to support heavy structures or buildings

• Flat plate foundation: a simple and economical type of foundation with a uniform thickness

• Waffle slab foundation: a type of foundation with grid-like
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Q1. Availability for project.
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I am available for the project and can commit to the required time and effort.
• I am currently not committed to any other projects

• I have the necessary skills and experience to contribute effectively

• I am willing to adjust my schedule if needed for the project

• I am excited about the opportunity to work on this project
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Q1. Components of Bridges.
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Components of bridges include abutments, piers, deck, superstructure, substructure, and foundation.
• Abutments provide support at the ends of a bridge.

• Piers support the bridge deck in the middle.

• Deck is the surface that vehicles travel on.

• Superstructure includes beams, girders, and trusses.

• Substructure supports the superstructure and transfers loads to the foundation.

• Foundation transfers the bridge loads to the ground.

• Ex...read more
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Q2. Types of Bearings.
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Bearings are structural components used to support and facilitate movement between two structural elements.
• Types include roller bearings, ball bearings, plain bearings, and fluid bearings.

• Roller bearings use cylindrical rollers to support heavy loads.

• Ball bearings use balls to reduce friction between two surfaces.

• Plain bearings have a sliding surface with no rolling elements.

• Fluid bearings use a thin layer of liquid or
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Q3. Span arrangement of Major Bridge you executed.
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The major bridge I executed had a continuous span arrangement with multiple spans.
• The major bridge had a continuous span arrangement with multiple spans

• The span arrangement was designed to accommodate the required length and load capacity

• The spans were connected seamlessly to ensure structural integrity and stability
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Q1. Initial and final setting time for cement.
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Initial setting time is the time taken for the cement to harden to a certain degree, while final setting time is the time taken for the cement to completely harden.
• Initial setting time is typically around 30 minutes to 1 hour after adding water to the cement.

• Final setting time is usually around 2 to 4 hours after adding water to the cement.

• Setting time can vary based on the type of cement and environmental conditions.

• S
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Q2. What is bleeding?
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Bleeding is the process of air escaping from fresh concrete mix and rising to the surface.
• Bleeding occurs when water in the concrete mix rises to the surface due to settlement of solid particles.

• It can lead to surface defects if not properly managed.

• Bleeding can be reduced by using proper mix design and techniques like vibration or adding admixtures.

• Excessive bleeding can weaken the surface of the concrete.

• Examples: Wa...read more
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