# The West Point Bridge Design Contest as a Classroom Tool - PowerPoint PPT Presentation

PPT – The West Point Bridge Design Contest as a Classroom Tool PowerPoint presentation | free to download - id: 531113-YjZlZ

The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
Title:

## The West Point Bridge Design Contest as a Classroom Tool

Description:

### The West Point Bridge Design Contest as a Classroom Tool by Reed Brockman, P.E. Senior Structural Engineer DMJM Harris The West Point Bridge Design Contest as a ... – PowerPoint PPT presentation

Number of Views:152
Avg rating:3.0/5.0
Slides: 25
Provided by: engineeryo
Category:
Transcript and Presenter's Notes

Title: The West Point Bridge Design Contest as a Classroom Tool

1
The West Point Bridge Design Contest as a
Classroom Tool
• by Reed Brockman, P.E.
• Senior Structural Engineer
• DMJM Harris

2
The Design Process
3
Steps 1 2 What's the problem?
Steps 1 and 2 do not get directly addressed by
the West Point Designer someone determined that
there will be a truss bridge on this spot!
A good engineer would question the assignment.
Why this type of bridge? Why a bridge? Why do
anything?
4
Step 3 Develop Possible Solutions
• Every option in this program has a significance
in terms of strength and price.
• Site / Substructure Development
• Types of Supports (2 types)
• Pier
• Superstructure
• Materials (3 kinds)
• Steel shapes (2 types)
• Steel sizes (many)

5
Step 4 Select the Best Solution
• There are literally millions of combinations of
the different choices in the program.
• How can you reduce the choices?
• Any mathematical relationships between choices
and cost?
• Any physics principles that can help reduce the
choices?
• Is there necessarily a BEST solution?
• Does anyone really expect to get that best
solution on the first try?

6
7
Steps 6 7 The big test - - What happened?
8
Steps 6 7 The big test - - Quantify it!
9
Steps 6 7 The big test - - WHY?!!!
Materials Report
Cost Report
10
11
Hit a wall? Question that "best solution!"
12
And then you win. Simple.
13
And then you win. Simple.
14
Totally obvious.
15
and the national winner...
(just what I was thinking!)
16
Using the West Point Bridge Designer for
teaching Construction Technologies
17
Should be self-explanatory
18
I know... you still need to explain shear and
torsion
19
Okay, the program doesn't require the use of any
tools, but it is easy enough to discuss using the
level, square, plumb bob, tape measure and strain
gauge in terms of the bridge designs.
20
Just ask "What are those big round things we keep
calling joints?"
More discussion will be needed on this, and its
best with pictures or samples.
21
What happens to the bridge when it deflects? In
real life, will it snap back to its original
shape? What effect could those power lines have
on the bridge? How much does it weigh?
22
This program closely follows the current AASHTO
LRFD requirements, intentionally neglecting
deflection. Discussing this opens the door for
discussing all other codes.
23
The "help" in this program spells out how to
determine the forces in each member, but to do it
by hand is just a mix of basic math and geometry.
24
...and it's fun.