To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
Subject: RE: Pressure grouting
From: Nicholas Blackburn <nblackburn(--nospam--at)fdgoak.com>
Date: Fri, 26 Jan 2001 11:59:50 -0800
pressure grouting can lead to heave problems which can affect
adjacent property or utilities. For instance, some forms of micro pile
inject grout into the surrounding soil matrix as they are placed. The
grout has to go somewhere and one effect is heave. The extent
problem depends on the soil type. Sand is more able to absorb the grout
Message----- From: Williston L. Warren, IV - S.E.
[mailto:Bill_Warren(--nospam--at)sesol.com] Sent: Friday, January 26, 2001 10:33
AM To: Listserver SEAINT Subject: Pressure
Be real careful with pressure grouting as a
foundation support. If the soils are not sandy, but are clayey or there
are slopes nearby, I have clients sign a letter that I prepare that says that
I do not recommend pressure grouting and if anything bad happens if they do,
they will defend me in court.
Pressure grouting is a indirect method of
treating soils, if it is just a consolidation problem maybe it could be OK if
it is sandy soil without nearby slopes. Remember once you pump the grout
in, you have no control where it goes.
I have a few really bad horror stories, but in
the flat lands with sandy soils, I have seen it work OK.
Williston "Bill" L. Warren, IV -
S.E. Structural Engineering SOLutions Newport Beach,