[Shop-talk] plumping question and sandrock sewers
pethier at comcast.net
pethier at comcast.net
Tue Oct 30 15:40:01 MST 2007
From: "Randall" <tr3driver at ca.rr.com>
> BTW, the USGS has updated their estimate of MSL several times in the past
> century, with changes in some inland areas varying by a meter or more. To
> really quote .01 foot accuracy, you need to specify *which* USGS map you are
> referring to. As I understand it, it's not even done by the USGS any more,
> but was transferred to the new National Imagery and Mapping Agency a few
> years ago.
Dunno. The number hasn't changed here recently. If you are building locally, your best bet is to shoot to our benchmarks. We know our sewers haven't gone anywhere. :-)
--
Phil Ethier West Side Saint Paul Minnesota USA
1962 Triumph TR4 CT2846L, 1992 Saturn SL2, 1993 Suburban,
1994 Miata C package
pethier [at] comcast [dot] net http://forum.mnautox.com/forums/
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I decry the textmessagization of the American-English language.
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