Have you tried the back of the AISC manual?
David A. Topete, SE
From: Jason Christensen [mailto:jason.christensen@wcaeng.com]
Sent: Tuesday, July 31, 2007 9:01 AM
To:
Subject: Z properties, calculations
Does anyone know where I can find a table that would include the equations for calculating the plastic section, Z (in^3), for common shapes.
Jason