Agenda

Describe civil engineering.Apply civil engineering

concepts.Have fun!

Civil Engineering - the people serving professionSub-disciplines of Civil Engineering Structural Engineering Geotechnical Engineering Transportation Engineering Environmental Engineering Water Resources Engineering Surveying Engineering Civil Engineering Materials

Structural Engineering

Geotechnical Engineering

Transportation Engineering

Environmental Engineering

Water Resources Engineering

Construction Engineering

Surveying Engineering

Civil Engineering Materials

CE Profession – a small sample of challenges you could address for society:

Water Quality : Over 2 million deaths in the world each year from water-borne diseases

Transportation: In US, over 40,000 fatalities highways each year

Foundations and structural failures: thousands have died in earthquakes due to inadequate materials, designs, and construction procedures

CE Profession – Career Opportunity

WHERE do they need these skills?

OK - time for some fun. Are you eager to be a Civil Engineer??...

Let’s design a bridge….

Before we proceed - check the strength of materials in tension and compressionIn Teams of 2 1)Partner 1 grasp the flat sheet on the long end

with thumb and index finger. Partner 2, do the same at other end of sheet. PULL with a steady force - is the flat sheet good in

“Tension” ?

2) Reverse the direction of force , each person push (compress) the paper with equal force. What happened?

3) Use any additional equipment on your desk to improve the strength of the paper in compression.

Consider other features affecting strength and stability Shape Slenderness Stiffness

Howe Truss

Pratt Truss

Warren Truss

West Point Designer Software allows you to design a truss bridge.

You can design your bridge selecting a joint/member combination.

The GOAL???Structurally adequate….

and…economical.

$$$$

Cost components

Bridge approach and abutments Structural elements

Material shape - flat iron or tubes

Material type - carbon steel or high strength

Material size - length and “width”

Connections

COLOR SCHEME

TENSION members turn BLUE

COMPRESSION MEMBERS turn RED The intensity of the color is directly

proportional to the intensity of the loading

UNLIKE MYTH BUSTERS!

YOU CAN TRY THIS AT HOME

http://bridgecontest.usma.edu/