[Stoves] brick making

[Crispin Pemberton-Pigott]

Dear Frank

You can have your spring tester rated in a lab. No problem. You might not be
allowed to do contract work if the terms specify that a certified lab must
do the testing work, rather than a certified testing machine. Maybe yes
maybe no.

They may have a different protocol and calculation method, so ask.  I like
this one because it can be done with an ordinary calculator on the back of
an envelope!

Keeping it simple...
Crispin

-----Original Message-----
From: frank [mailto:frank at compostlab.com] 
Sent: August 22, 2007 2:25 AM
To: crispin at newdawn.sz
Cc: 'Discussion of biomass cooking stoves'
Subject: Re: [Stoves] brick making

Dear Crispin,

This is no 'small' contribution and is exactly the type of info I am 
looking for -thanks!

One thing I am wondering about is if my spring tester is comparable to a 
'real' test. It seems like it should be but it would cost a lot to find 
out. Also we are not a 'certified' lab for doing this type of testing so 
I will just use it for research. But I think for < $1000 US it could be 
very useful in places making and buying bricks.



Thanks again
Frank