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Fwd: Isolated pad footings - To tie or Not to tie?

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I have the following condition:
A one story custom home where the roof trusses are continuous over the
exterior bearing walls to a covered patio where the ends of trusses rest on
a beam at the edge of the patio. The reaction from the beam is transmitted
to standard pad footings located at the edge of the patio. 
BTW, the site is level, no consideration is needed for hillside.
Is it necessary to tie the pads in two directions to the slab foundation at
the residence, or will the flatwork (unreinforced concrete patio and
walkway) be sufficient?
Tying the footings will not prevent a differential settlement and there is
no concern for lateral movement due to earth pressure - or if there is it
is unlikly that the pressure would exceed the restraint of the patio slab.
Please let me know what you think about this.
Sincerely,
Dennis Wish PE


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<html><head></head><BODY bgcolor=3D"#FFFFFF"><p><font size=3D2 =
color=3D"#000080" face=3D"Lucida Casual">I have the following =
condition:<br>A one story custom home where the roof trusses are =
continuous over the exterior bearing walls to a covered patio where the =
ends of trusses rest on a beam at the edge of the patio. The reaction =
from the beam is transmitted to standard pad footings located at the =
edge of the patio. <br>BTW, the site is level, no consideration is =
needed for hillside.<br>Is it necessary to tie the pads in two =
directions to the slab foundation at the residence, or will the flatwork =
(unreinforced concrete patio and walkway) be sufficient?<br>Tying the =
footings will not prevent a differential settlement and there is no =
concern for lateral movement due to earth pressure - or if there is it =
is unlikly that the pressure would exceed the restraint of the patio =
slab.<br>Please let me know what you think about =
this.<br>Sincerely,<br>Dennis Wish PE<br><br><font size=3D2><br></p>
</font></font></body></html>
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From: "Dennis S. Wish PE" <wish(--nospam--at)cyberg8t.com>
To: "SEAOC Listservice" <seaoc(--nospam--at)seaoc.org>
Subject: Isolated pad footings - To tie or Not to tie?
Date: Thu, 13 Feb 1997 15:14:26 -0800
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