Grizzly G0637 Planning Drop Downs, Calculating Duct Resistance, Approximate, Loss Per Foot of

Planning Drop Downs

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Calculating Duct Resistance

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Duct	Approximate		Approximate
Dia.	Static Pressure		Static Pressure
	Loss Per Foot of		Loss Per Foot
	Rigid Pipe		of Flex Pipe
	BV^c	7gVcX]	BV^c	7gVcX]
	A^cZh	A^cZh	A^cZh	A^cZh
	Vi(*%%	Vi)%%%	Vi(*%%	Vi)%%%
	;EB	;EB	;EB	;EB
'	%#%.&	%#&''	%#(*	%#)*(
'#*	%#%-	%#&%,	%#(%+	%#(.,
(	%#%,&	%#%.)	%#',&	%#(*'
)	%#%*,	%#%,*	%#'&*	%#'-
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-	%#%'(	%#%',	%#%-	%#&%-
.	%#%&,	%#%&.	%#%*,	%#%,.
Fitting	90˚	45˚	45˚	90˚
Dia.	Elbow	Elbow	Wye(Y)	Wye(Y)
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-	%#)%*	%#'%(	%#'.,	%#&-.

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To calculate the static pressure of any given line in the system, follow these steps:

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