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Public Hearing Virginia Graeme Baker Pool and Spa ... - Pool Safely

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The rating for the 2006 ICC<br />

18x23" rectangular grate<br />

with 550/0 opening<br />

is only 146 gpm<br />

An impractical use of a large outlet<br />

A B<br />

:= 18in·23in - 4.(4in)2 + 1t .(4in)2 A B = 400.265in 2 aB:= fA B aB = 1.529f?<br />

2<br />

A R :=A T -A B A R = 13.735in aR := fAR aR = 0.052f?<br />

Q:=aR'~p<br />

ft3<br />

Q= 0.326- IQ = 146gplrl Wnacceptably low flow rating<br />

s<br />

or such a large (18 x 23)outlet<br />

G-aB<br />

2 with 55 % open area.

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