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RE: Lateral Pressure

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An old equation is P = 150 + 9000R/T

where P is pressure in psf
R is the rate of pour in feet per hour (not to exceed 7 feet/hr)
T is temperature degrees Fahrenheit

This is of course for plain concrete with no admixtures.
>From Richmond Screw Anchor Co. Technical Data, 1997 (attributed to ACI
Standard 347-68)

Ed Marshall, PE

> -----Original Message-----
> From:	Jim Kestner [SMTP:jkestner(--nospam--at)]
> Sent:	Tuesday, October 27, 1998 5:26 PM
> To:	Structural Engineers Association International
> Subject:	Lateral Pressure
> Does anyone have any information on the lateral pressure produced by wet
> concrete?  I assume it must vary depending on how wet it is (ie a slurry
> would produce a larger lateral force than a stiff mix).
> Jim Kestner, P.E.
> Green Bay, Wi.