The
purpose of this part of the survey is to help us identify general opinions of
EPS-block geofoam technology from the viewpoint of those in practice.
A1.
Which category best describes the agency or company you
represent?
government
agency
design
engineer
expanded
polystyrene manufacturer/supplier
EPS
block molder
EPS-geofoam
distributor
construction
contractor/builder
Other
(Explain briefly below)
A2.
Have you considered or utilized
the NCHRP Project 24-11 recommended design guideline or recommended material and
construction standard (check all that apply)?
Yes,
considered design guideline
If
you checked the last box, please briefly explain your reason(s) for not using
these standards.
A3.
Has
the agency or company that you represent ever specified, supplied or installed
EPS-block geofoam in a lightweight fill for any type of road?
To
help us understand what is the primary benefit of using EPS-block geofoam so
that we can develop this aspect to the fullest, what is the primary positive
reason for using this material in road applications?
A5ii.
To help us understand what aspect(s) of EPS-block
geofoam most need improvement, what is the primary negative aspect or issue that
you can state about this material in road applications? (Note: Exclude cost of
the EPS blocks.)
A5iii.
For which of the following
application(s) have you designed, specified, supplied, or installed EPS-block
geofoam for the function of lightweight fill in road construction (check all that apply)?
A5iv.
Concerning
the EPS-block geofoam specification used on your most recent project,
what was the source
(check all that apply)?
A5v.
What
one item in the specification you used would you recommend be revised?
The
purpose of this part is to provide us with information that is useful to some of
the specific goals of this project related to design of planned soil
slopes involving new roadway construction.
For the purpose of this questionnaire, planned soil slopes are existing slopes
that are in a stable state prior to construction and new engineered slopes to
include cut slopes.
B1.
Who is primarily involved with design associated with
planned soil slopes involving new roadway construction?
B2.
Who is primarily involved with construction associated with
planned soil slopes involving new roadway construction?
B3.
Which analysis methods* do you utilize to evaluate
planned soil slopes involving new roadway construction projects (check all that
apply)?
*The
methods below were obtained from the book titled Soil Strength and Slope
Stability by J. Michael Duncan and Stephen G. Wright.
Which one(s)?
B4.
Have you utilized other types of lightweight fill materials in slope stability
projects associated with planned soil slopes involving new
roadway construction?
B5.
Are you currently utilizing load resistance factor design (LRFD) procedures in
design involving soil slopes associated with new
roadway construction?
B6.
Do you perform seismic slope stability analysis in slope designs involving
planned soil slopes associated with new roadway construction?
No,
seismic loading is not a design consideration in our area.
The
purpose of this part is to provide us with information that is useful to some of
the specific goals of this project related to remedial repair or remediation of
existing unstable soil slopes involving existing roadways.
C1.
Who is primarily involved with design associated with remedial
repair or remediation of existing unstable soil slopes involving existing roadways?
C2.
Who is primarily involved with construction associated with remedial
repair or remediation of existing unstable soil slopes involving existing roadways?
C3.
Which analysis methods* do you utilize to evaluate remedial repair or
remediation procedures involving unstable
soil slopes in existing roadway construction projects (check
all that apply)?
*The methods below were obtained from the
book titled Soil Strength and Slope Stability by J. Michael Duncan and
Stephen G. Wright.
Simple
methods of analysis that involve a single equation to compute the factor
of safety
Slope
stability charts
Spreadsheet
software
Commercial
slope stability computer programs
Which one(s)?
Other
(Describe briefly)
C4.
Have you utilized other types of lightweight fill materials in slope stability
projects associated with remedial
repair or remediation of existing unstable soil slopes involving existing roadways?
No
Yes
(Which lightweight fill types?)
C5.
Are you currently utilizing
load resistance factor design (LRFD) procedures in slope designs involving remedial
repair or remediation of existing soil slopes associated with existing roadways?
C6.
Do you perform seismic slope stability analysis in slope designs involving remedial
repair or remediation of existing unstable soil slopes associated with existing roadways?
Which slope stability procedures* have you utilized for
design of planned soil slopes associated with new roadway construction and/or for remedial
repair or remediation of existing unstable soil slopes associated with existing roadways (check
all that apply)?
*The procedures outlined below were obtained from TRB Special
Report 247, Landslides: Investigation and Mitigation.
Category
Procedure
Design
of Planned Slopes
Remedial
Repair or Remediation
Avoid Problem
Relocate facility
Completely or partially
remove unstable materials
Install bridge
Reduce driving forces
Change line or grade
Drain surface
Drain subsurface
Reduce weight
Increase resistance forces by
Applying external force
Use buttress and
counterweight fills; toe berms
Use structural systems
Install Anchors
Increasing internal strength
Drain subsurface
Use reinforced backfill
Install in-situ reinforcement
Use biotechnical
stabilization
Treat chemically
Use electro osmosis
Treat thermally
D2.
What other slope stability procedures have you utilized for
i.
design
of planned soil slopes associated with new
road construction?
ii.
remedial repair
or remediation of existing unstable soil slopes associated with existing roads?
D3.
Overall,
what one item would you like us to consider or include in the NCHRP
24-11(02) project documents that would be of greatest use to you in
designing, supplying or installing EPS-block geofoam for road
construction?
D4.
Would you prefer that that the NCHRP
24-11(02) results for slope applications be integrated with the Project 24-11
reports for stand-alone embankments over soft ground or that the two project
reports be separate?
D5.
Do you have any of the following supporting documentation that you think may be
helpful to us in achieving the research objectives and that you would be willing
to provide (check all that apply-we will contact you for follow up)?
EPS-block geofoam in
design of planned soil slopes involving new roadconstruction
EPS-block geofoam
associated with remedial repair or remediation of existing unstable soil slopes
involving existing roads
EPS-block geofoam in
stand-alone embankments on soft ground
Bridge Approaches
Other types of
light-weight fills
Plans or design
details
Specifications
Design Reports
Cost estimates and
comparisons
Field
instrumentation/ performance data
Photographs
Other case history
information
Please
feel free to provide any additional comments below.
Thank
you for participating. Your
input is invaluable for the success of this project.
