EAS 140 Engineering Solutions Lecture 25 Civil Engineering

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

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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical 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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Announcements – C

Readings in Jensen: Ethics: Chapters 15 -17 Civil: section 4. 5 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Assignments

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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Civil Engineering Overview

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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Civil Engineering Disciplines

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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Structural Engineering

Sears Tower 150, 000 tons 1450 ft 60 lb/ft 2 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! EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Structural Engineering - Example 150 -225 ft

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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Geotechnical Engineering

Do Force Balance Shear strength = frictional forces + cohesive forces Effect of water – No water: angle = 30 -37 o – Some water: angle = big! – Lots of water = liquefaction EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Geotechnical Engineering - Example

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

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

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? EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Environmental Engineering

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

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

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% (1996 -2006) 82, 000 new jobs (1996 -2006) EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical 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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Civil Engineering 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) EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Civil Engineering Profession - Employment

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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical 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 EAS 140: Engineering Solutions Chemical Civil Computer Industrial Electrical Mechanical Civil Engineering Curriculum

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

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