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# Re: phi in both sides of formula 14-1

• To: seaint(--nospam--at)seaint.org
• Subject: Re: phi in both sides of formula 14-1
• Date: Thu, 30 Mar 2006 11:15:10 -0800

```Eugenio:
You are misinterpreting the equation.  It's not an algebra type equation that
you solve for Pnw.  The design axial strength is phi(Pnw) and to calculate this
you evaluate the right side of the formula.

I hope that makes sense.

www.structuralstuff.com

Quoting Eugenio Aburto <aburtoeugenioarch(--nospam--at)hotmail.com>:

> I am confused with the formula (14-1) "Design axial load strength" which
> sowns a factor "phi" at the two sides of the formula.     In the 2001
> California Building Code.
> My recollection in algebra says that a value goes to the other side of the
> formula with the oppossite sign. If I follow the rule, "phi" multiplying goes
> dividing, means phi/phi=1.
> Why in such Chapter 19, DIVII - 1914.5.1 even it gives a value of 0.70 to
> phi?.
>
> I will appreciate your comments, specially because I am an architect.
>
>
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