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Re: Crack control for swimming pool.

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In a message dated 2/18/2003 2:54:40 PM Eastern Standard Time, bmarczewski(--nospam--at) writes:

We need a z-value of 43 corresponding to crack width,w = 0.004 inch

What code are you designing  to?  The 1999 ACI 318 did away with the z factor, replacing it with Eqn 10-4 which directly specifies the spacing.

      s = 540/fs - 2.5 Cc  (Eqn.  10-4)

Even if you are not designing to 318-99 or 02,  you could look at what this equation would do for you.

Gail S. Kelley, P.E.
Unenlightened, uniformed, naive   (Is that a Frank Sinatra song)?