Tom Saad of FHWA Chicago HS for Agricultural Sciences Shadow day 02-08-12

Careers In Transportation……Structural (Bridge) Engineering

Chicago High School for Agricultural Sciences

Job Shadow Program

February 8, 2012

Topics

Introduce Myself Introduction to Engineering

Structural/Bridge Engineering Explain what I do as a Structural Engineer

Knowledge, skills and abilities for success Guidance for those interested in Engineering or in

Transportation Industry

Who am I?

Thomas Saad, P.E. USDOT/ Federal Highway Administration Senior Structural Engineer

Bridge Design and Analysis Bridge Construction Bridge Inspection Bridge Fabrication Foundation/Geotechnical and Hydraulic

Engineering

Some Engineering Professions

Civil EngineeringAgricultural EngineeringMechanical Engineering Industrial EngineeringChemical EngineeringElectrical EngineeringAerospace EngineeringComputer Engineering

Civil Engineering

Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings.

Civil Engineering Sub-Disciplines

Environmental Engineering Geotechnical Engineering Structural Engineering Transportation Engineering Municipal or Urban Engineering Water Resources Engineering Material Engineering Construction Engineering Surveying

Skills Civil Engineers require

Math and Sciences Written and Verbal Communications Leadership and Management Computers Even Artistic skills

Bridge Design Engineer

Design and construct safe bridges for the traveling public

Ensure bridges provide service for 75 or more years for increasing loads and traffic

Limit the need for maintenance so traffic flows freely

Make bridges aesthetically pleasing

What Do I Do?

Work on National committees to develop design codes and criteria

Assist Engineers in using the latest technology to improve bridges - Teacher

Work at the state level to aid in developing programs to improve bridge safety and durability

Serve as expert to help bridge community understand best practices

Bridge Safety?

OV-10

National Bridge Inventory (NBI)

What do you know about the collapse of the U.S. 35 Silver River Bridge?

What bridge safety measures were introduced because of it?

1-11

Earthquake

Damage due to Earthquake

Column Shear

Strengthening a Column

Infill shear wall

Seismic isolation

1964 M 7.5 Niigata Earthquake, Japan

Showa Bridge – Collapse due to embankment lateral spread. River bed loose sand (approx. 30 ft depth) liquefied.2 ft diameter steel pipe pile extracted showed 3 ft permanent displacement and maximum curvature at base of liquefied layer

Embankment Fills – Lateral Spread

Site Remediation Using Ground Improvement Vibro-Replacement Technique – most widely used

densification method

Scour Failure

Bridge Scour

Structural Design Engineer

Design and construct safe bridges for the traveling public

Ensure bridges provide service for 75 or more years for increasing loads and traffic

Limit the need for maintenance so traffic flows freely

Make bridges aesthetically pleasing

Evaluate Bridge Condition

0.85c

10-24

Need technology to inspect bridges

10-25

Load Rating/ Load Evaluation of Bridges

OV-26

Examples of Trucks that use our Highways

4-27

Oversized Superloads

9-28

Oversized Superloads

9-29

Structural Design Engineer

Design and construct safe bridges for the traveling public

Ensure bridges provide service for 75 or more years for increasing loads and traffic

Limit the need for maintenance so traffic flows freely

Make bridges aesthetically pleasing

Exciting and Rewarding Career

Opportunity to work with experts from across the nation (and internationally)

Teach adults how to improve the bridge network Help customers solve problems for the traveling

public Good pay and job benefits Continually face new challenges – continue to

have opportunities to learn

Questions???

Thomas Saad, PESr. Structural Engineer FHWA-Resource Center 4749 Lincoln Mall DriveMatteson, IL 60443(708) 283-3521 thomas.saad@dot.gov

http://www.fhwa.dot.gov/bridge/

http://www.fhwa.dot.gov/resourcecenter/index.cfm

http://www.fhwa.dot.gov/