Comments on: New Bridge design – 553lb (695 efficiency)

By: mizley

mizley — Wed, 08 Sep 2010 14:33:00 +0000

wats efficiency?

By: mizley

mizley — Wed, 08 Sep 2010 14:31:24 +0000

how many popsicle sticks did u use?

By: Frank

Frank — Thu, 27 May 2010 13:50:22 +0000

they most likely used clear or white glue, because hot glue isnt that strong of a hold.

By: Pedro

Pedro — Fri, 21 May 2010 17:04:24 +0000

what kind of glue you used? white glue or hot glue

By: yo mama

yo mama — Mon, 26 Apr 2010 16:52:34 +0000

Can this bridge be reduced yet still hold around 300lbs?

By: AndrewL

AndrewL — Thu, 01 Apr 2010 21:40:01 +0000

I agree that there are better ways to test the bridge (winding cable instead of loading up paving blocks). However, in this design the “cars and people” deck is the top of the bridge.

In a bridge building competition, the rules will (or should) define exactly how the bridge will be tested. You then design the bridge around that particular test.

Rightly or wrongly, the rules for this bridge design specified that it would be loaded from a central point using a 1″ square steel tube. The bridge design was optimised to support a single central load.

Had the load been applied at an off-centre load point or in some other manner than a point load, the bridge would likely have failed sooner.

By: ASDAsdasd

ASDAsdasd — Thu, 04 Mar 2010 01:45:50 +0000

its a wrong way to test a bridge lol…..

the correct way is to attach a rod through a hole in the bridge with a plate on top. A cable will be attached and you must wind it to increase the weight.
The test that you did tests the top of the bridge, but cars and people will only go on the deck. LOL

By: Adam

Adam — Mon, 01 Mar 2010 13:37:36 +0000

bridge**

By: Adam

Adam — Mon, 01 Mar 2010 13:37:20 +0000

what kind of bride is it exactly?

By: Garrett Boon

Garrett Boon — Thu, 04 Feb 2010 21:08:30 +0000

Grant, it sounds like you and your son built a really nice bridge. Thanks for posting your results. Your offer to sell the bridge made me smile. Did you happen to take any pictures of your bridge?