Stone Arch Bridge Construction Model
Print Profile(2)
Description
This model demonstrates the mechanics of a stone arch bridge. Why can a chasm be spanned by a stone arch? Why don't the stones simply fall? Constructing and observing this model provides an easily understandable explanation.
Bridge construction begins with a wooden framework shaped as an arch. Then, starting from both ends, stone blocks are carefully placed atop the curved wooden structure. Throughout construction, the weight of the stones bears upon the underlying framework. Only after the final stone is set in the center can the wooden structure be removed.
But how is this possible? Each stone's weight naturally pulls it downwards. However, the slightly converging surfaces prevent the stones from toppling. They are arrested, thereby exerting pressure on adjacent stones. This pressure transmits further to the side walls, where the bridge rests. The arch form thus redirects the force of gravity laterally into the ground, instead of vertically downwards.
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Assembly
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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