# Re: UBC '97-Section 2180.1.5.2

• To: <seaint(--nospam--at)seaint.org>
• Subject: Re: UBC '97-Section 2180.1.5.2
• From: "Paul Feather" <pfeather(--nospam--at)san.rr.com>
• Date: Tue, 19 Jun 2001 14:42:23 -0700
```Hi Clara,

Should read Bsn, the key being "in the direction of load".  You will not
have an edge distance "in the direction of load" under tension, only
modifications to Ap.

For interpolation, Pat Symons posted the equations earlier this month
"assume the following:
lx,ly        lower known x and y values
mx, my   middle unknown x and y values
ux,uy     upper known x and y values

Interpolation is finding the unknown mx at my (or unknown my given mx) given
lx,ux,ly, and uy

the equation is:
(mx-lx)/(ux-lx)=(my-ly)/(uy-ly)"

Paul Feather

----- Original Message -----
From: "Clara P. Lau" <CPLau(--nospam--at)eqe.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Tuesday, June 19, 2001 1:12 PM
Subject: UBC '97-Section 2180.1.5.2

>
>
> Nominal anchor bolt strength
>
> Under Eqn (8-10), it states that " where the anchor bolt edge distance,
lbe, in
> the direction of load is less than 12db, the value of Btn in Formula (8-9)
shall
> be reduced by linear interpolation to 0 at an lbe distance of 1-1/2
inches.
>
> Q #1.  Is this requirement is for Btn or Bsn? If it's for Btn, then this
should
> refer to formula (8-5); otherwise, this should refer to formula (8-9).
>
> Q#2. Need detail explaination for the linear interpolation.
>
>
> Clara
>
>
>
>
>
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