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RE: Low Concrete Quality

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I think my unstated point was that the units made no sense. Compressive
strength is measured in units of pressure, or force per unit area, not mass
per unit area. A kilogram is a unit of mass. A Newton is a unit of force
equal to a kilogram times an acceleration of 1 meter/sec2. 

As we used to say in Alaska, "I don't care how they do it down south."

-----Original Message-----
From: Oshin Tosounian [mailto:sdgse(--nospam--at)pacbell.net]
Sent: Friday, June 15, 2001 10:35 AM
To: seaint(--nospam--at)seaint.org
Subject: Re: Low Concrete Quality



----- Original Message -----
From: "Lutz, James" <JLUTZ(--nospam--at)earthtech.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Friday, June 15, 2001 8:41 AM
Subject: RE: Low Concrete Quality


> I've never heard of compressive strength being expressed as kg/cm2.
> Shouldn't it be N/cm2 or MPa? 210 N/cm2 or 21 Mpa is around 3000 psi. (1
Ksi
> = 6.894 MPa.)
>

Kg/cm2 is part of the metric system used in some countries. The others you
metioned are part of  "System International", which is erroneously (I think)
referrd to as the metric system.

Oshin Tosounian, S.E.
Los Angeles, CA


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