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Topic:   2x4 purlins, 2x6 rafter, 1985 home - 1632 visits (1 today, 1 this week)

Eric Laney
Member


Posts: 95
From:Georgetown, TX
Registered: May 2005

posted December 19, 2005 05:28 AM            

Just wondering if purlin size in 1985 was allowed to be smaller than rafters. Wrote it up anyway, just curious.

Richard Stanley
Member


Posts: 774
From:Corpus Christi, TX
Registered: Sep 2002

posted December 19, 2005 10:21 AM            

I still see it in new ones. Probably not that big a deal around here - no snow loads - but I keep on writing it up anyway.

Jerry Peck
Member




Posts: 7925
From:Pembroke Pines, FL
Registered: Feb 2003

posted December 19, 2005 10:37 AM            

It's probably not the size of the purlin which matters as much as the support of the purlin.

Think of the purlin as a beam, the longer the span between supports, the larger it needs to be, but support it every 2 feet (an exaggeration) and a 2x4 on edge will support quite a bit of roof load. Span it out to 12 feet and it won't.

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Jerry Peck
South Florida

Jerry McCarthy
Member



Posts: 1114
From:San Mateo, CA
Registered: Jan 2001

posted December 31, 2005 08:43 AM            

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