Bridge WebQuest

Directions: Go to the School Web Site and Click on Homework Central. Once there, find Mr. Page’s page and the web quest will be under Ind Tech 7. If you click on the white headings it will take you to a web site that will help you answer the questions for that section.

1) What kind of Engineer designs and builds bridges?

List 5 others they may design and maintain.

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How do you become one?

2) Name that bridge.

Read through all 4 pages on web site to answer the following questions.

Bridge Strengths and Weaknesses

There are four major types of bridges. The biggest differences between the four, is the distances they can cross in a single span and the materials that they are constructed with. A span is the distance between two bridge supports, whether they are columns, towers or the wall of a canyon. Fill in the information needed for each bridge type below.

Write down which bridge you put on each site.

Site 1 –

Site 2 –

Site 3 –

Site 4 –

3) Forces that act on bridges.

Read through all pages on web site to answer the following questions.

What does BATS stand for?

Any time weight is on a bridge, the materials have at least one force being exerted on them. Define the following forces.

Compression –

Tension –

Draw and Label tension and compression.

Define

Buckling –

Snapping –

What is the beam bridge also called? _______________________

Name two truss patterns. ______________ ________________

What force do Arch Bridges mainly have? ____________________

Where does the Arch Bridge divert this force to? ______________

Draw and label parts and forces of a Suspension Bridge.

How is a Suspension Bridge and Cable-Stayed bridge different?

4) Sketch the following truss designs.

End view of Deck Truss End view of Pony Truss

End view of Through Truss Arch Type

Pratt Truss Double Warren Truss

Wichert Truss Cantilever Through Truss

Describe the 4 major factors in describing a bridge

Span –

Material –

Placement of Travel Surface –

Form –

5) Lab of Forces

Go through all 4 tabs on the interactive lab to answer questions.

Make sure to do all interactive pieces.

Describe the following:

Tension –

Compression –

Bending –

Shear –

Torsion –

Dead Load –

Live Load –

Describe how to strengthen bridges under different factors.

Soft Soil –

Temperature –

Earthquake –

Wind –

Vibration –

Which material is the strongest in compression?

Which material is the strongest in tension?

Which shape is the strongest?

6) The Bridge Challenge

In all 4 locations write down which bridge you picked first, the problem with that bridge and the final type of bridge for that location.

Location 1 –

Location 2 –

Location 3 –

Location 4 –