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purlin |
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purlin [′pər·lən] (building construction) A horizontal roof beam, perpendicular to the trusses or rafters; supports the roofing material or the common rafters. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Add one more purlin (horizontal brace) to the walls. Its two-hinged parabolic laminated arches bear on tapered concrete columns through stainless-steel pins; they carry a secondary purlin structure which bears the double glass skin. In one striking detail, Bruder replaces the top flange of a standard I-beam with an extruded cylinder designed so it barely appears to touch the purlin it supports; the move also maintains the horizontal plane of the bottom flange of the beam across the building's changing span. |
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