Building Frame with Catenary Roof Beams

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Two parallel rows of pillars are joined with beams shaped like catenaries to form a building framework. The catenary is the best curve to use to support its own weight, so the roof covering should be comparatively light.
Contributed by: Sándor Kabai and János Tóth (November 2007)
Open content licensed under CC BY-NC-SA
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"Building Frame with Catenary Roof Beams"
http://demonstrations.wolfram.com/BuildingFrameWithCatenaryRoofBeams/
Wolfram Demonstrations Project
Published: November 9 2007