For starter I have always assumed (yea I now what that means but I've  
always been one so go with your strengths) that it was the sideways  
throw that is the challenge based on the fact that the water momentum  
is in the same direction as the throw across the room but changing the  
direction 90 degrees would seem to ore adversely affected by small  
changes in distance covered.

Applying Ron's rule to avoid the slippery slope inducted Aristotelian  
explanations of phenomena, tells me to simply check the cut sheets and  
embrace their guidance.

Roland


On Dec 10, 2009, at 9:38 AM, Todd - FPDC wrote:

> I get all that. But I assume most of the pressure in a sidewall is for
> throw and not width, how can we justify a significant decrease in
> pressure based on a decrease in width alone?
>
>

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