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RE: IRC Table R802.5.1(9) Rafter ties

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-----Original Message-----
From: Jim Wilson [mailto:wilsonengineers(--nospam--at)] 
Sent: Wednesday, May 25, 2005 6:38 AM
To: seaint(--nospam--at)
Subject: IRC Table R802.5.1(9) Rafter ties

This is not an engineered design,...

-----/Original Message-----

That's the key phrase, right there.

The IRC is a "one size fits all" solution. It is far better than
nothing, but there's always going to be some fat in the construction if
a prescriptive code such as the IRC is followed exactly.

Now, short of ENGINEERED design, I would recommend taking a look at
AWC's "Wood Frame Construction Manual" (which is recognized as an
"alternative standard" in your state's "Uniform Construction Code" for
residential construction). The WFCM has prescriptive provisions that IMO
go into more depth than the residential building code, especially in
regard to various special cases such as you describe. It's also rather
easy to use

However, there's nothing wrong with "building it stout," particularly
since there is little additional cost involved in driving a few more

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