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[H]Bridges and Triangles

Blogs > 3 Lions
Post a Reply
3 Lions
Profile Blog Joined October 2007
United States3705 Posts
Last Edited: 2008-10-26 22:39:36
October 26 2008 21:35 GMT
#1
How are congruent triangles relevant to a suspension bridge? Where are the congruent triangles in this bridge picture?
[image loading]


Sorry if this is a stupid question, but I can’t find anything useful about this. Thanks.

edit: ok, this is for my geometry project. I just don't get how the congruent triangles help support the bridge.

micronesia
Profile Blog Joined July 2006
United States24805 Posts
October 26 2008 21:46 GMT
#2
Why do you want to know? Can you update this with your motivation for inquiring?
ModeratorThere are animal crackers for people and there are people crackers for animals.
fight_or_flight
Profile Blog Joined June 2007
United States3988 Posts
October 26 2008 21:48 GMT
#3
There are congruent triangles on the left and right sides of the bridge. There are also almost-congruent triangles all along the length of the bridge, when you consider adjacent triangles.

I can't say for sure, but I would say the significance of congruent triangles (as opposed to random triangles) is the fact that they can take similar amounts of force/stress, whereas different sized triangles would vary in the amount of force they could take, potentially creating weak points.

Triangles are of course the strongest shape.
Do you really want chat rooms?
thunk
Profile Blog Joined March 2008
United States6233 Posts
October 26 2008 21:49 GMT
#4
Basically because triangles are structurally very strong.

http://www.rogersconnection.com/triangles/index.html

Kinda basic and there's certainly a lot more math behind it but you get the idea.
Every time Jung Myung Hoon builds a vulture, two probes die. || My post count was a palindrome and I was never posting again.
micronesia
Profile Blog Joined July 2006
United States24805 Posts
October 26 2008 21:50 GMT
#5
On October 27 2008 06:48 fight_or_flight wrote:
There are congruent triangles on the left and right sides of the bridge. There are also almost-congruent triangles all along the length of the bridge, when you consider adjacent triangles.

I can't say for sure, but I would say the significance of congruent triangles (as opposed to random triangles) is the fact that they can take similar amounts of force/stress, whereas different sized triangles would vary in the amount of force they could take, potentially creating weak points.

Triangles are of course the strongest shape.

That's along the lines of what I was thinking, but the only actual application I can think of is to properly choose the positioning of the towers to create congruent triangles on each end.
ModeratorThere are animal crackers for people and there are people crackers for animals.
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