Re: Fw: [PSUBS-MAILIST] Re: Blowing ballast (was: question about general design?)

["Greg Cotton" <gregc02@attglobal.net>]

In other words, use ALL rebar. A big chunk of iron is THREE times better that 
rock or concrete and about 66% as good as lead...and a whole lot cheaper!

From:           	"Marsee Skidmore" <heyred@email.msn.com>
To:             	<personal_submersibles@psubs.org>
Subject:        	Re: Fw: [PSUBS-MAILIST] Re:  Blowing ballast (was: question about general design?)
Date sent:      	Fri, 31 Aug 2001 18:12:59 -0700
Organization:   	Microsoft Corporation
Send reply to:  	personal_submersibles@psubs.org

> The same reference says that solid unreinforced concrete is 144 lb/cu ft.
> Steel is 490 lb/cu ft, if you'd like to figure in rebar.  - Joe
> 
> ----- Original Message -----
> From: Lew Clayman <lew_clayman@yahoo.com>
> To: <personal_submersibles@psubs.org>
> Sent: Thursday, August 30, 2001 8:14 AM
> Subject: Re: Fw: [PSUBS-MAILIST] Re: Blowing ballast (was: question about
> general design?)
> 
> 
> > --- Marsee Skidmore <heyred@email.msn.com> wrote:
> > > No, 96 lb/cu ft was a number quoted for broken stone.  Didn't say how
> > > broken, but this was kinda the low average for a couple of different
> types
> > > and forms.  Like Dave says, solid rock ranges up around 150 lb/cu ft.  -
> Joe
> >
> > How does concrete, w/ or w/o rebar, compare?
> >
> > -L
> >
> > =====
> > "Yo no soy marinero / Soy capitan"
> >           - Traditional Mexican Lyric (La Bamba)
> > =====
> >
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