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Article: Paul Hanna and the Hanna House - Stanford, CA
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Tom



Joined: 30 Jan 2011
Posts: 2284
Location: Black Mountain, NC

PostPosted: Sat Jul 07, 2018 7:00 pm    Post subject: Reply with quote

Thank you.
I think I've seen this letter before
Had forgotten.
I wonder if they positively tensioned the wire before subjecting the beam to loading.
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SDR



Joined: 17 Jun 2006
Posts: 15860
Location: San Francisco

PostPosted: Sat Jul 07, 2018 7:26 pm    Post subject: Reply with quote

Good question. As I say, the wire was not in the end installed . . .

SDR
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outside in



Joined: 29 Jul 2006
Posts: 1111

PostPosted: Sat Jul 07, 2018 9:13 pm    Post subject: Reply with quote

Wright used a similar truss for the long span at the north porch (off of the dining room) at the Willits House in 1901. I looked into this, and found that it was an old way of providing additional support for beams in old barns - something that Wright may have experienced in Wisconsin as a kid.
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SDR



Joined: 17 Jun 2006
Posts: 15860
Location: San Francisco

PostPosted: Sat Jul 07, 2018 9:45 pm    Post subject: Reply with quote

Do you find the size of the 1 3/4" dia pipes a bit excessive ? Wouldn't they have to be punched through the flitch plate, weakening it unnecessarily ?

SDR
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Tom



Joined: 30 Jan 2011
Posts: 2284
Location: Black Mountain, NC

PostPosted: Sat Jul 07, 2018 11:19 pm    Post subject: Reply with quote

outside in wrote:
Wright used a similar truss for the long span at the north porch (off of the dining room) at the Willits House in 1901. I looked into this, and found that it was an old way of providing additional support for beams in old barns - something that Wright may have experienced in Wisconsin as a kid.


So cool
So they would have only been able to give it as much "pretensioning" as muscle could provide I assume.

SDR - yeah, the 1.75 does seems large. I would have thought 1" max
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