constructing a paper bridge, can only use minimal glue - nothing else. have tested cyclinder columns with 'T' shaped sections cut into each end for support and connections. Two of these hold more than one brick. I can use 4. Problem is the construction of the beam, has to have a clear span of 150mm by 300mm. Any ideas on the beam design ??
2006-10-18 18:31:11 · 6 answers · asked by jake s 2 in Science & Mathematics ➔ Engineering
yeah thats pretty good mate, ill probably put paper on the top and bottom also, to stop tensile and compressive forces. and tie the top of the column back to the base somehow. by minimal glue, i meant ya cant just make a simple beam and fill it with glue/puddy. cheers for the idea
2006-10-18 18:57:06 · update #1
6 sheets of 'cartridge' paper (bit thicker than normal paper, cardboard base, clear span of 300mm and clear height of 150mm. so far i have 4 cylindrical columns 149mm high with T shaped sections slotted in and glued top and bottom to creat an I effect and the required 150mm height
2006-10-18 20:06:51 · update #2
Use pleated paper, like a fan, sandwiched between flat sheets glued to the ridges of the pleats, like corrugated cardboard, as the main-body of the beam. The pleats should be vertical, to support the brick's mass.
TOP VIEW
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Ok, it looks better in preview, but you get the idea. I am not sure what "minimal" glue means. In this model, you'd need only enough glue to fix the pleats to the paper that surrounded them.
2006-10-18 18:40:59 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Paper Beam Design
2017-01-20 04:24:22 · answer #2 · answered by erke 4 · 0⤊ 0⤋
First, know your design parameters. Clear span is one diminsion. You give two dimensions. The span is the basic criteria for a bridge. It's fundamental unit is length.
Is the span 150 or 300? The moment, the phenomena that governs for a bridge, is a function of the square of the length of the span.
If you have a choice, design to the smallest span.
I know what I would do, as long as I know the parameters.
NOTE: What is the span, and do you use typical 8.5 x 11 paper, and what are the end conditions, and how many sheets of paper can we use?
2006-10-18 19:25:26 · answer #3 · answered by daedgewood 4 · 0⤊ 0⤋
build an arch
2006-10-18 18:55:15 · answer #4 · answered by gussie r 3 · 0⤊ 0⤋
use upright tubes as support, this was the way to go when i did it
2006-10-19 04:02:15 · answer #5 · answered by rauls ghost 4 · 0⤊ 0⤋
clueless can it be done is it possible
2006-10-18 18:35:09 · answer #6 · answered by Lucy Lu 4 · 0⤊ 0⤋