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About: Collar beam     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: personyago:WikicatRoofsyago:Artifact100021939yago:Covering103122748yago:Object100002684yago:PhysicalEntity100001930yago:ProtectiveCovering104014297yago:Roof104105068yago:Whole100003553 New Facet based on Instances of this Class

A collar beam or collar is a horizontal member between two rafters and is very common in domestic roof construction. Often a collar is structural but they may be used simply to frame a ceiling. A collar beam is often called a collar tie but this is rarely correct. A tie in building construction is an element in tension rather than compression and most collar beams are designed to work in compression to keep the rafters from sagging. A collar near the bottom of the rafters may replace a tie beam and be designed to keep the rafters from spreading, thus are in tension: these are correctly called a collar tie.