-----Original Message----- From: gskwy(--nospam--at)aol.com
[mailto:gskwy(--nospam--at)aol.com] Sent: Monday, April 11, 2005 7:19
PM To: seaint(--nospam--at)seaint.org Subject: Thornthwaite
When using the PTI method to design, the soil parameters em and Ym are
based on the Thornthwaite Index.
The PTI manual has a Thornthwaite Index map that uses data from the years
1954 to 1974. Is this the most recent map or is there a more
recent one commercial available from the someone like the Soil Conservation