low density concrete

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

>Reply-To: "L. Stephen Graham" <lsgraham@UCLA.EDU>
>
>I am doing some calculations for a facility that is installing a
>coincidence system and need to use the attenuation coefficient for
>F-18 and low density concrete.  The architect states that the "1st
>and 2nd floors are constructed of 3 1/4" light weight concrete over
>3" deep 20 gage welded steel floor decking."
>
>Do any of you have that information?
>
>Steve Graham
>L. Stephen Graham, Ph.D., FACR
>VA Greater Los Angeles Healthcare System/
>     UCLA School of Medicine
>Cyclotron Bldg. 345
>11301 Wilshire Blvd.
>Los Angeles, CA  90073
>
>Internet:  LSGRAHAM@ucla.edu
>Office:  (310) 478-3711, x49029
>Fax:  (310) 268-4522
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