[Greenbuilding] THE VOID (was d'oh!)

[Robert Tom]

On Thu, 01 Nov 2007 08:37:35 -0400,
Alan Abrams <alan at abramsdesignbuild.com> wrote:

Stronzo di Nord wrote:
> (Using rounded river stone and larger sized stone would likely result in
> an even greater volume of water per litre of stone but that should be
> verified with your own tofu tub. )

>>>>>>>
>
>
> HMMM--my intuition sez--whether the stones were large or small--as long  
> as they were all the same size and shape, the ratio of solid to void  
> would not change...however, if the stones were a mix of large and small,  
> the net void> volume would be less...I hear RT running back to his well  
> stocked kitchen...

As it so happens, I was just grabbing some late lunch and I happened to  
have a 2 litre tub of washed 1.5" rounded river stones and a 2 litre tub  
of washed 0.375" rounded river stones (aka "pea gravel" (which is distinct  
 from the "pee" traps that Californicators have in their hot tubs) handy.

So naturally, I weighed the two tubs of stones and measured how much water  
it would take to fill the voids remaining in the two tofu tubs.

2 litres of 1.5" stone :
Dry weight = 3585 grams (+/- a few g)  (or 1.79 kg per litre)
Amount of water added to fill 2 litre tub:  890 ml. (or 445 ml of void per  
litre of 1.5" stone)

2 litres of 0.375" stone:
Dry weight = 3590 grams  (essentially the same as above, 1.79 kg per litre  
of stone)
Amount of water added to fill 2 litre tub to rim: 830 ml. (or 415 ml of  
void per litre of 0.375" stone)

For those who have faulty memories and cannot remember everything that  
they read on this List,
by way of review, in the archives  Re:  FACKS 'N' FIGGERS October 31, 2007

>> 2 litre ... 5/8" and under, washed/crushed limestone.
>> It weighed 3.458 kg or 1.729 kg per litre.

>> 820 ml. (+/- a few ml.) of water to bring it up to the rim of the tofu  
>> tub,or 410 ml per litre of stone.

I'll leave it to others to evaluate the on-the-ball-edness of Alan's  
voice-capable intuition.

Me ? I've got more pressing matters to attend to (like pressing food into  
my voice-capable orifice).
-- 
=== * ===
Rob Tom
Kanata, Ontario, Canada
< A r c h i L o g i c  at chaffY a h o o  dot  c a >
manually winnow the chaff from my edress in your reply