Purlin

In architecture a purlin or peeling (called a rib in some parts of Britain) is a horizontal beam or member in a roof construction, supported on the principals and supporting the common rafters.
Found on http://www.probertencyclopaedia.com/browse/TP.HTM

Purlin

Horizontal beam, part way up a rafter to prevent sagging
Found on http://www.fmb.org.uk/find-a-builder/helpful-advice/jargon-buster/?locale=e

Purlin

Horizontal beam in a roof space, positioned part way up a rafter to prevent sagging.
Found on http://www.interbuilders.co.uk/glossary/p/purlin.html

Purlin

Positioned half-way up the slope of a roof, purlins are timber beams installed to support the rafters.
Found on http://www.selfbuildabc.co.uk/self-build-glossary.html

Purlin

Positioned half-way up the slope of a roof, purlins are timber beams installed to support the rafters.
Found on http://www.encyclo.co.uk/local/20704

Purlin

A secondary member in the plane of the roof and held in position by main roof members.
Found on http://www.corusconstruction.com/en/design_guidance/the_blue_book/

Purlin

a continuous horizontal timber running parallel to the ridge, sometimes referred to as side timbers.. See roof.
Found on http://www.encyclo.co.uk/local/20935

Purlin

• (n.) Alt. of Purline
Found on http://thinkexist.com/dictionary/meaning/purlin/

Purlin

Usually a cold-formed horizontal structural member attached perpendicular to the joist top chord or main frames of a building for support of the roof deck. [] [Q]
Found on http://www.areforum.org/up/GeneralStructures/JOIST%20AND%20STRUCTURAL%20GLO

purlin

One of a series of horizontal framing timbers supporting the rafters or spanning between trusses or frames and supporting the roof. Purlins usually span at right angles to the slope of the roof
Found on http://www.encyclo.co.uk/local/21113

Purlin

Longitudinal roof member of vehicle, usually fitted between the transverse members known as carlines.
Found on http://www.railway-technical.com/newglos.shtml

Purlin

In architecture, structural engineering or building, a purlin (or historically purline, purloyne, purling, perling) is any longitudinal, horizontal, structural member in a roof except a type of framing with what is called a crown plate. In traditional Timber framing there are three basic types of purlin: purlin plate, principal purlin and common p...
Found on http://en.wikipedia.org/wiki/Purlin

Purlin

A horizontal beam supported by the Principal Rafters of a roof truss, and carrying the Common Rafters between the Eaves and Ridge.
Found on http://www.woodworkersuk.co.uk/blog/carpentry-and-joinery-glossary/carpentr
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