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Ronnie Bell <rbell@cp*.or*> replies to David Story
<story@be*.en*.sg*.co*>:
> 
> You are quite wrong if I may say so. When carefully reading THE BOOK I 
> realized that I did not need to code for the descent (in my table 
> generating program). Buhlmans model and all TABLES generated from 
> a true implementation thereof implicity ongas "as if" you had made a 
> instant drop to the bottom. Buhlmans model assumes a 60 fpm descent rate, 
> and any descent faster that that reduces ANY conservatism that instant 
> descent may have provided.  
> 
> r.b.
> DECOM

Ronnie;

I'm puzzled by your final comment. As you state, Buhlmann's tables are 
built from the algorithm by forcing the initial descent to be instantaneous, 
but they are USED by including the descent time in your time-at-depth. 
From a TABLE point of view that is conservative. With respect to the ALGORITHM, 
if you constrain it to a fixed descent rate (say, 60 fpm), shouldn't exceeding 
that rate get you to depth with a lower tissue-load than the algorithm
computes, 
thus also being conservative? 

Regards

Les Wilk

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