# RE: Nail Slip

• To: <seaint(--nospam--at)seaint.org>
• Subject: RE: Nail Slip
• From: "Bill Allen" <Bill(--nospam--at)AllenDesigns.com>
• Date: Tue, 15 Aug 2000 20:29:17 -0700
```Nels-

As Dennis Wish once pointed out, this equation (along with others) is not
dimensionally consistent. I worked an example in Mathcad and converted it to
html. You can view this example at:

http://www.allendesigns.com/sw/shearwalldeflections.htm

I hope this helps in making this equation clearer.

Regards,

Bill Allen, S.E. (CA #2607)
ALLEN DESIGNS
Consulting Structural Engineers
Laguna Niguel, CA
http://www.AllenDesigns.com
V (949) 365-5696
F (949) 249-2297

||-----Original Message-----
||From: Nels Roselund [mailto:n.roselund(--nospam--at)worldnet.att.net]
||Sent: Tuesday, August 15, 2000 6:08 PM
||To: seaint(--nospam--at)seaint.org
||Subject: Re: Nail Slip
||
||
||Mike,
||
||Thanks for pointing me to the answer.
||
||Your explanation [in the Archives], that the implied units of
||the constant
||in the nail-slip term of the equation is 1/ft, seems to make
||sense.  It
||gives the nail slip term a value of 1/12  of the result I got
||by making the
||Table value of en unit-less.  It also gives a result that makes the
||contribution of nail-slip to the total deflection small
||rather than the
||major component of shear wall deflection.
||
||If the implied units of the constant were to be taken as
||1/in, the result
||would be the same as making en unit-less.
||
||Is your use of an implied value of 1/ft rather than 1/in based on
||documentation, or on what you know of the derivation of the deflection
||equation?  Or is your explanation based on what you, too,
||found to give the
||most sensible results?  I'd like to know that there is
||documentation and how
||to find it.  I don't like to have to  use magic formulas.
||
||Nels Roselund
||Structural Engineer
||
||
||-----Original Message-----
||From: Mike Valley <mtv(--nospam--at)skilling.com>
||To: seaint(--nospam--at)seaint.org <seaint(--nospam--at)seaint.org>
||Cc: n.roselund(--nospam--at)worldnet.att.net <n.roselund(--nospam--at)worldnet.att.net>
||Date: Tuesday, August 15, 2000 3:32 PM
||Subject: RE: Nail Slip
||
||
||>This was discussed on the list in July of 1999.  I posted on 7/8 and
||>7/15.  The archives contain the info.
||>
||>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
||>Michael Valley, P.E., S.E.                   E-mail: mtv(--nospam--at)skilling.com
||>Skilling Ward Magnusson Barkshire Inc.              Tel:(206)292-1200
||>1301 Fifth Ave, #3200,  Seattle  WA 98101-2699      Fax:        -1201
||
||
||
||
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