JUNE 20, 2001 - "State of Practice of Geotechnical Engineering Design of Custom Homes in the Houston Area between 1990 and 2001"
Speaker: David Eastwood, P.E.
Eastwood P.E., President of Geotech Engineering and Testing, Houston,
presented his paper entitled "State of Practice of Geotechnical Engineering
Design of Custom Homes in the Houston Area between 1990 and 2001".
His paper is the result of a study recently compiled to show the standard
of practice during the last decade in the local geotechnical industry
for the custom residential market in Houston.
comparison survey included 17 Houston-area geotechnical firms that had
provided investigations and reports on 99 total custom residences. All
but three of the reports surveyed showed an effective plasticity index
greater than 15%, which is the current level above which ASCE considers
soil to be expansive. David compared 19 aspects in the various reports
and reported the statistics, averaged over the last decade. Some of
the surprising statistics found are summarized as follows:
concluded that the above statistics represented problems that require
correction. He believed part of the problem is that there is no minimum
standard in the industry that local geotechnical engineers are required
to follow but he was optimistic that the FPA's recent publication, Recommended
Practice for Geotechnical Explorations and Reports and the work
in progress by the ASCE Residential Committee may solve this in the