EAS 140 Engineering Solutions Lecture #25 Civil Engineering: Might As Well Be Civil About It

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Announcements – A, B  Wed. 11/14: Lecture – Ethics and Professionalism  Mon. 11/19: Lecture - Ethics Case Study Presented –Ethics case study materials on the web by Friday 11/16  Mon. 11/26: Civil Eng. Dept. – In-lab quizzes start – on Excel material since last quiz and Maple  Wed. 11/28: In-Class Ethics Case Study –Power case study due

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Announcements – A, B  Mon. 12/3: Lecture - Lessons from Failure  Wed. 12/5: Lecture - Course Review  Thurs. 12/6: In-lab quiz for Thursday labs  Mon. 12/10: Final Examination –Will make sample questions available after Thanksgiving –Will emphasize material from lecture and case studies; no computing from lab

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Announcements – C  Tues. 11/20: Lecture – Ethics and Professionalism  Mon. 11/26: In-class lab quizzes start –on Excel material since last quiz and Maple  Tues. 11/27: Lecture - Ethics Case Study Presented –Ethics case study materials on the web by Friday 11/16  Thurs. 11/29: Civil Eng. Dept. –Power case study due

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Announcements – C  Tues. 12/4: In-Class Ethics Case Study  Thurs. 12/6: Lecture - Lessons from Failure and Course Review –In-lab quiz for Thursday labs  Mon. 12/10: Final Examination –Will make sample questions available after Thanksgiving –Will emphasize material from lecture and case studies; no computing from lab

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Announcements - D  Wed. 11/14: Lecture – Ethics and Professionalism  Fri. 11/16: Lecture - Ethics Case Study Presented –Ethics case study materials on the web  Mon. 11/26: In-class lab quizzes start –on Excel material since last quiz and Maple  Wed. 11/28: Civil Eng. Dept. –Power case study due  Fri. 11/30: In-Class Ethics Case Study

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Announcements - D  Wed. 12/5: Lecture - Lessons from Failure  Thurs. 12/6: In-lab quiz for Thursday labs  Fri. 12/7: Course Review  Mon. 12/10: Final Examination –Will make sample questions available after Thanksgiving –Will emphasize material from lecture and case studies; no computing from lab

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Assignments Readings in Jensen:  Ethics: Chapters  Civil: section 4.5

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering - Overview  World’s Oldest (Engineering) Profession –Everything was military and civil  Most Diverse? You Betcha! –UB: Civil, Structural and Environmental Engineering  Most Satisfying? –Build it and see it

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering - Disciplines  Structural Engineering –Design: Buildings, bridges –Old: Don’t fall down –New: Earthquakes, tall buildings  Geotechnical Engineering –Design: Foundations, earthen works –Old: Support the load –New: Landfills, liquefaction  Construction Management Engineering –Design: People, $$, materials –Old: Scheduling, economics –New: Web-based inspection  Environmental Engineering –Design: Treatment, remediation –Old: Drinking water, wastewater –New: New pollutants, brownfields

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Structural Engineering  Molding materials we don’t understand into shapes we can’t analyze so as to understand forces we can’t assess in such a way that the public does not suspect our ignorance (safety factor)  Primary Tool: Force Balance –Newton’s Third Law of Motion: For each force, there is an equal and opposite balancing force

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Structural Engineering - Example  Overturning moment –Overturning moment = (area)(force/area)(moment arm) = (1450 ft x 178 ft)(60 lb/ft 2 )(725 ft) = 5.6 million ton-ft  Resisting moment –Resisting moment = force x moment arm = 150,000 tons x 84 ft = 12.6 million ton-ft  But… soil must be strong! 1450 ft ft Sears Tower 60 lb/ft 2 150,000 tons

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Geotechnical Engineering  Where structures and environment interact  Primary Tool: Force Balance  Example: Sand Pile –How moist should sand be to make the steepest pile of sand? angle of repose

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Geotechnical Engineering - Example  Do Force Balance  Shear strength = frictional forces + cohesive forces  Effect of water –No water: angle = o –Some water: angle = big! –Lots of water = liquefaction

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Construction Management Eng.  One Tool: Critical Path Method  Example: Foundation  Tasks –Place sideforms –Pour foundation –Excavate –Order, receive sideforms –Order, receive rebar –Place rebar

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Construction Management Eng. Dig Order rebar Order forms Lay forms Lay rebar Pour

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Environmental Engineering  Design engineered systems and analyze natural systems  Primary Tools: Mass, Momentum, and Energy Balances –Mass: Where do pollutants go? How well did we remove them? –Momentum: How do water and air flow? –Energy: Chemical and mechanical thermodynamics  Example: Urban Water Cycle –What is the water cycle?

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Environmental Engineering drinking water treatment plant wastewater treatment plant Urban Water Cycle

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Environmental Engineering DWTP WWTP DWTP WWTP DWTP

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering - Employment  Many jobs 231,000 (expected in 2006) over 90% employed within one year  Civils work as civils highest percentage working in field among engineers  Good job growth increase by 18% ( ) 82,000 new jobs ( )

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering - Employment  Government (46%) state (22%), local (15%), federal (9%)  Consulting (37%) highest among engineers become licensed  Construction (7%)  Other (10%) manufacturing, utilities, mining

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering Profession - Employment  Salary (1995) starting: $32,000 average: $62,500 long-term salary: ownership  Job satisfaction 5/100 best job based on salary, prestige, growth, security (source: Money)

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering Curriculum  Overall philosophy grounded in mechanics reflects the breadth of civil  Design and practice internship, Eng. Career Institute  Track approach Construction engineering and management Environmental engineering Geoenvironmental and foundation engineering Structural engineering 15 technical electives

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering Curriculum  Two degrees offered BSCE (Civil. Eng.) Follow track or general BSEE (Env. Eng.) Less structural engineering More sciences - especially biology, geology, engineering chemistry BS in structural eng. - coming  Dual degrees BA or BS in CS/BS in civil – 4.5 years BS/MEng – 5 years, get both degrees BS/MBA – 5 years

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering Curriculum  Freshman year the usual also: “Great Ideas”, graphics  Sophomore year statics dynamics solid mechanics also: C++, probability and statistics

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Civil Engineering Curriculum  Junior year structures I and II fluid mechanics soil mechanics environmental engineering materials geodesy labs  Senior year transportation foundations planning and management also: technical electives

Chemical  Civil  Computer  Industrial  Electrical  Mechanical EAS 140: Engineering Solutions Other Fun Stuff  Contests and clubs steel bridge concrete canoe hazardous waste other: Predator model  Other organizations ASCE, SWE  Faculty-student interactions clubs research classroom: teaching excellence