At 06:27 PM 1/12/2002 -0500, Michael B. Holt wrote: >I'd also like to get that book on the design of pressure vessels See -- http://www.efdlant.navfac.navy.mil/downl/lantops_15/Dm39.pdf Online 351 page Navy hyperbaric pressure vessel manual in pdf with lots of math regarding stresses, etc. William Alford walford@dbtech.net Tout comprendre c'est tout pardonner