Notes I-eld INFORMATION SYSTEM

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Rý
F.S.
RECEVED
APR2 31974
va
c
r
ENGINEERING
TECHNICAL
INFORMATION
SYSTEM
DATA
RETRIEVAL
CURRENT
TEXTS
AWARENESS
Notes
I-eld
Volume
TECHNICAL REPORTS
NOTES
FIELD
6
Number
4
April
1974
Energy Dissipators for Flumes and
Culverts
Volume
Markings
Rural Roads
Construction
Control System
Washington
Division
tJS
-
Engineering News
FOREST
SERVICE
-
U.S.
DEPARTMENT. OF AGRICULTURE
ENGINEERING FIELD NOTES
This publication
is
monthly newsletter
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or administrative
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for publication
The length
7113.
only. All material
Office
current timely technically
is
is
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editing
employees
of the
Fran Owsley
U. S. Department
of Agriculture
assumes no responsibility for the
own employees.
and convenience
recommendation
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C. 20250._
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publishing
Washington
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Quinn
Al Colley
for the information
conclusion
of others
Bakke
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endorsement
of the reader. Such
or approval
of
use
any
FIELD NOTES
ENERGY
FOR FLUMES AND CULVERTS
DISSIPATORS
By Mike Lambert and Ted
1969
In October
J.
Sterling
Center San Dimas
Development
Equipment
Wilcox prepared
Pickett
Calif.
Volume
Field Notes
an article for Engineering
dis-sipator
5
1 Number
Since
discussing
that time
comparison
was subjected
in
Service
under
Sites
1
Service Region
18-inch
size
for
up
to
as
except
and
trials
9 and 10.
CMP.
18-inch
Each
combined
feet
per second
The
dissipator developed for the
10 cubic
and brush.
at
nonclogging
a self-cleaning
field
dissipator.
were conducted.
dissipators
was shown to be more effective
were then selected for
Forest
rates
an energy
agreement with the Bureau of Reclamations
cooperative
a
more effective
also
flow
specimens of silt gravel
Denver see Figure
and
of three different
tests
to selected
documented
carefully
Forest
early progress of a project for developing
at least
Almost
all
reducing
laboratory
of the flow
device.
two
were
dissipators
of the dissipators
Most have now been
the energy
with
installed
for field
each
in
were the
trial
for 4 years and they are
in service
all
pro-cedures
inspected
every year.
Test sites were selected
a wide variety
to provide
while achieving
success
extreme or where
could
installation
dissipator was installed
stream
bottoms.
dissipator
is
A
at
5
to prevent
of
percent
fill
slopes
downward
on
fill
were achieved
slopes and
in
downstream
slope away
sites
where conditions were
Successes
not
installation
and the most severe
Failures did occur
were sloppy.
procedures
the bottom
minimum
necessary
be determined.
Different
of conditions.
were used so that the minimum successful procedures
the dissipator from being filled with
when
the
unstable
from the
silt.
instal-lation
Since
the outlet velocity
of the water at the dissipators
the dissipator will be equally
effective
the lip of the dissipator must be carefully
as possible.
during
lip
is
leveled
so the water
The disturbed native material must be compacted
installation
most important
of the dissipator.
however water
independent of
independent of the slope of the
The
flowing
CMP.
will
carefully
inlet
velocity
During
be spread
as
including watering
material in front of and under the dissipator
down
the
1
fill
slope can
erode
much
loose material
is
behind
F
E
tz
On.
SPLASH
GUARD
BAFFLE
CULVERT
PIPE
ENTRANCE
BACK
DISCHARGE
Figure
1.
-
PLATE
DEFLECTOR
LIP
Energy Dissipator Developed
2
by Bureau
of Reclamation
and beside the
available
the site
at
to protect
desirable
the lip
in-stalled
avail-able
with the
A
riprap
If
dissipator.
is
it
is
riprap.
was developed
flow recorder
battery-operated
on selected
A
dissipators.
record
These records provide
for these dissipators.
differences in performance between
Information obtained
for
of the flow
this
project
rate
as
and
been
have
eight
of time
a function
is
now
a means of identifying reasons for the
dissipators.
from the recorders
date has served to reinforce
to
that obtained
in
over-sized.
the Denver Laboratory of the Bureau of Reclamation/
comparison
flow
tests.
it
is
and during
important to design dissipators
factor in the Bureaus
dimension
To
While
report
it
eliminate problems from the dissipator
is
the previously mentioned
sized for the
maximum expected
more important that they not be
full the expected runoff
from about
design-ing
half the storms
example
runoff
exceeds
18
Figure
15 percent
Designing
page
to preclude
the dissipators
of the dissipators
flow
would have to exceed 2.25
their
full
silting
to preclude
is
siltation
For the dissipator
rating.
14 of the Bureaus report the flow
from half the storms
dissipators
silting
cfs.
to design them
rate
would be 15 cfs
Therefore
the result
in
the
and the
of
small as possible.
as
problems has the additional
of making
benefit
pro-cedures
them much more economical.
size
of 1.0
made
at
of galvanized
An information
E.
Bonita
men
Pipe Underdrain
for
Calif.
91773.
or installation
Energy
3
18-inch
Installation
1
quickly
size
as
the nominal
dimension
factor
time using good
day.
from the San Dimas
Ave. San Dimas
sites
to 2
REC-ERC-71-10 Bureau of Reclamation Report
of Corrugated-Metal
cost increases very
cost about $150.
site equates
about particular
their
for the field tests in the
package can be obtained
answer questions
I/
because
is
sheet metal
a readily accessible
Center 444
This
Dissipators fabricated
increases.
Equipment Development
Engineers
at
the Center can
also
problems.
Jan.
Dissipators.
1971
Hydraulic
Model
Studies
SIGNS
AND MARKINGS FOR LOW VOLUME RURAL ROADS
By Edmund C. Neumann
Highway
Engineer
Safety
WO
Trans-portation
The Department
research study
for various
TTI
is
One
task
is
of
date of
December 28
to perform several
is
control
The
roads.
rural
a research contract
to the Forest
interest
guidelines for traffic
of low volume
from the beginning
contractor
that
to develop
classes
The
recently awarded
of Transportation
Institute
to the Texas
objective of the
signing and marking requirements
contract
The
1973.
The
Service.
is
to be completed in
estimated
cost
is
tasks to accomplish the contract
18 months
$63000.
objectives.
consider-ations
is
to define
included
road classes
in this
of signing and marking.
for purposes
Specific
task are
Existing road classification
Roadway
usage
Surface type
Travel
speed
Roadway
geometrics
Terrain.
Another task
is
to analyze
warning and regulatory
in this
task
is
signs
to be given
Economy
the classes of roads determined above
necessary
Safety
in installation
Another task
determined.
is
techniques
MUTCD
Devices
to establish
This
will
Selection
and
and scenic
Consideration
and on grades
included
also
areas
new
in
the Manual
sign
techniques
guidelines to supplement the
include
of appropriate
Size of signs
safety.
and maintenance costs
curves intersections
Existing sign
and
operation
to
Esthetics in recreation
at
for satisfactory
to determine the level of
sign
messages
required
4
on Uniform
such
as
MUTCD
Traffic Control
symbol
signs.
for each class
of road
Lateral and longitudinal
Support type
and mounting height
Another
road.
task
This
is
of
signs
general warning and regulatory
Frequency of using
of appropriate
Selection
of signs
position
to validate the
signs
markings.
recommended
signing and marking practices for each class of
includes
Establishing the relative
of risk involved
degree
when
using reduced signing or
re-sults
marking
levels
Cost-effectiveness
based
on
comparison with signing and marking
a
as
per the
MUTCD.
The
final
of
task of the contract
of the contractual
is
an implementation plan for
to develop
utilization
of the
this research.
This project was requested
Little
is
known
and
requirements
as
Service and
by the Forest
also
to the level of traffic
in
we were
the selection
involved
the
development
of the contractor.
needed on low volume
control
in
The
rural
roads in order to
and guidelines
function-ally
maintain
the
adequate
MUTCD
operational
be applied
can
system they may not be
or esthetically
Regions
in
all
justified
economically
helpful
and
in
present
roads such
many
by the contractor
Hopefully
signing and marking
in
safety.
but for low volume
roads
and Forests may be contacted
and proper
Safety
guidance
warrants
as
instances
the
Forest
in
Service
may not be
desirable.
the conduct of the study.
prove
to
and
of Forest
the signing of our roads
this
study
will
Service roads.
to comply
Act.
5
and should
provide
assist
wherever possible
guidelines for the adequate
These additional
with the requirements
guidelines should
of the
Highway
CONSTRUCTION CONTROL SYSTEM
By
Civil
Most
of our efforts
in
designer
mind
in
using
and
little
Jerry Leonard
RDS
Technician
Engineering
the computer
R.O. Region
2
been undertaken with the
for road systems have
has been given to the construction
consideration
engineers
problems.
of changes
Because
a faster
method
over a period
evolving
of computing
of years the construction
the hand crank or an electrically-operated
By
desk
using the desk
of today needs
engineer
on the project.
road design revisions
Before
computer
the
was the best means of performing
calculator
men
two
calculate the earthwork
con-struction
engineering
computations.
of an average
could
engineer
lose
his
calculations are made.
No
perfect road design can
could
arise
on the
accurate
inherits.
We now
become more
could
they
be made that would include
we assume
if
have
in
dealing
design system
with
this
CODE
the construction
that the construction
assumed margin or
before
problems that
that our designs are 90 to
tool to allow the construction
a computer-oriented
the
revision of line or grade
all
move
can
ago and
5 to 10 years
of a previous
perspective
a margin of error of 5 to 10 percent
efficient
The construction
his
today than
Therefore
project.
that leaves
shift
can
But most contractors
project in 2 to 6 weeks.
five-mile
single-lane
more cubic yards of earth per
calculator
95 percent
engineer
to
engineer
error.
6
was developed by Region
using the
Road
Design
de-sign
construc-tion
System
as
a base.
Since
points and end areas
The topography
alignment
is
and ditches
engineer
taken
and other
it
is
needs
is
in
reference
curve
criteria
to
fully
all
L
ground
checking
design.
possible to take
define
previous
to enable the
coding
Since
on
of the arithmetic
this
as
corrective action
before
is
the
design roadway
catch
points
available
the
very
any discrepancies
6
notes.
width
catch
problems.
of the vertical
Since
the
superelevation
done by the designer. The
well as whether or not
information
to
construction
shifting
of the topography
the road in regard
only to bring the previously stored
and slough widening
of the approved
of developing
capable
program was modified to handle many varied
possible to use
This system permits
it
this
design system was already
previous
without disturbing the datum reference
template
ditches
the
picture
see Figure
project
is
early during
become
up
to date.
1 missed
within
the scope
construction
history.
stake
slope
v
ground
shot
Area used
vertical
of closur
for
error
volume
calculations
hinge
- Diagram
point
Code Error Checks
con-struction
Figure
This system lends
itself
1.
to controlling the
for this use
are
Input
required and optional for
This
Topography.
stakes match
2.
defined
3.
4.
template
Grade.
Profile
grade
Slope
may be
This
Template.
in
the
catch
Stakes.
hinge
project
catch
as
on how
point
final
Figure
These may be referenced
this
close the
7
point
design record
new
book see
grade
If
the
Figure
to one of three points on the template
3.
point
has been selected
3.
above design
3.
reference
cannot be changed see Figure
slope
3.
the final design or as field modified.
from the
Once
Figure
the change in the catch
book see
shoulder or grade.
it
points see
reflect
changes
point
the
Blank formatted catch
or from design depending
the same
changes
If this
if
CODE
may be new
the design
format.
road
2.
see Figure
pages
available
of a hand-designed
construction
notes are submitted in a prescribed
staking
1.
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for a
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6.
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Figures
As staked
in
the field.
field
of culverts.
staking
CODE
Update
in
2.
Optional.
4 and 5 show an example of
Output for
1.
Factor
The
Listing.
update printout
the field notes of each section
a.
Grade
b.
Templates
c.
Topography
d.
Catch points
End-Area Data.
An
quantities.
check
The
listing
added
see Figure
4.
Grade.
earthwork
also
grade
program that
available
in
identical
data that are recorded
6.
to printouts
on
the
returned
printout
is
with design earthwork
the vertical
error
7.
Mass Diagram see Figure
profile
the following
see Figure
feature that appears
3.
A
is
lists
CODE
8.
elevation appears
is
available
see Figure
for each section
see
using the normal design
10.
10
Figure
9. Any
earthwork
post
program
is
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0256020107
202010700
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73
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A
6/25/73
PROGRAM
132919
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W
GRADE PRINTOUT
PAGE
WASHINGTON OFFICE DIVISION OF ENGINEERING
NEWS
OPERATIONS
Harold
Strickland
L.
of Engineering
Assistant Director
and Development
Training
assisted
analytical
over the implementation of computer
Office Divisions are concerned
Several Washington
systems which they have been developing
over the past several
These
years.
Character-istics
Geo-graphic
RAM
systems have names such as Timber
RCS
System Planning
Locator.
are
now
Resource Allocation
System FOCUS
Resource Capability
-
GIM
Simulation
Using
-
-
Several of these information
being used on
some
National
by
management
a single
other systems which has resulted in duplication
Potential
being developed.
overlap
Calif. has been evaluating
released in January
Management
task.
and describing
1974
describes
-
interest
in
Some
the field.
and possibly unnecessary
the
with
systems
capabilities
of
competition with each other or which
Sciences
existing
GELO
and data analysis systems
they do not know
or in
Transportation
division without integrating
functional
users are confused because
systems whether the systems are complementary
system to use for a specific
systems
and are generating
Forests
of these systems have been developed
Model TSP
Fire Operational
Management System and
Information
General
-
-
MaSS
Staff
located
systems for management.
three of the systems
now
Berkeley
in
Their first report
in operation.
MaSS
will
evaluate
manage-ment
additional
systems this coming
year.
Implementation of these systems
today.
Transportation
that they
System Planning
have been under development for
areas to facilitate
now
implementation
years.
in
In
are developed
and Advanced
1967 we
the field.
a problem
facing
Logging Systems Technology
decided
now
Even
is
to train
the
in
specialists
number of
specialists
these
who
manage-ment.
have been trained
Program
is
very
in
the
TSPP
Logging Systems and Advanced
Advanced
seems to be true for other new technologies
A
work
conference
our Advanced
find ways to
Specialty Training
small and the implementation process has been extremely slow.
was held January 24
Technical
-
for Forest
developed
February
Specialty Training
1 1974
Program.
The
more rapidly implement TSP and Advanced
Recommendations
from the group were to strengthen
18
in
This also
Service resource
Washington
Objective
D.C.
to discuss
of the meeting was to
Logging Technology on
the implementation process
forests.
by
to our present
addition
Advanced
sym-posiums
Providing
training options
Program which would
into the hands of the
in
provide
workshops and
Providing
at
Selecting
short courses
positions for analysts
needed.
as
consultants
levels.
at
levels
all
and applications.
technologies
cross training and team development for specialists
involved
resource
in
and management system applications.
candidates
well as intellectual
for
all
Communicative
characteristics.
for interfacing
characteristics
ability
to relate
of personal
effectiveness
skills
as
in past
to others are all necessary
managers and technology.
Encouraging interdisciplinary participation
participation
training on the basis
of specialty
levels
and present assignments and the
including
include
Training
the technology
get
program for managers to help keep managers
aware of the developing
planning
options
and appropriate
organizational
all
Developing an awareness
Providing
additional
and
staff
other training and development assignments
career opportunities
and technicians
for forest-level
training
The
users.
2-year
by managers
at
all
in
training and development
levels
to enhance
their
programs
understanding
and
manage-ment
ability
to properly
Several Washington
utilize
work groups
Office
process which will provide
are
now
software and
studying
the
criteria
skilled
personnel.
for a system
for development and implementation of
new
technologies.
proposed for such a process include
Present requirements
A
system hardware
means to
initiate
system development and provide
for system integration
into
existing systems and processes.
un-needed
im-plementation
A
decision-making
process whereby
of new technologies
systems
while maintaining
management
controls development and
minimizing duplication
control
of resource
overlap
and/or
allocations for development
through-out
maintenance
An
and operation
of the systems
now
being
implementation process for placing appropriate
used.
data systems
into use
up-dating
the Forest
A means
of
Service.
of providing system support including maintenance of data
files
and consultation
to users.
19
files
main-taining
Managers must control the development of these systems to assure orderly and timely
integration
into the present
and updating
units that are
to the
many
now
methods
used
the Forest
in
of our computer supported
developing
questions
these systems must
which have been
raised
Service and to provide
analytical
work
together
concerning
All
systems.
Forest
to provide
for
Service
some
computer-supported
answers
analytical
systems.
meantime we
for training
which can be used for training
forest
appli-cations
In the
technicians
work.
A
and analysts to use the
good background
will assist
in specific
are looking
in
available
systems TSP for example
TSPP
We
would appreciate
Staff or the
Regional
systems in their
forest
planning
and operation
systems analysis computer programing and computer
the user to understand
the
options
and use
will
follow
all
of these systems.
a basic course and will
Consultant/Specialist.
ideas from our readers on this subject.
20
Specialized
training
be provided
through
TECHNOLOGICAL IMPROVEMENTS
Heyward
T. Taylor
Assistant Director
of Engineering
es-tablished
oper-ational
New
Center at Fort Collins Colo.
Computer
As projected
in
UNIVAC
an
Center
FCCC. On
and has been
23
8 and 9 were
equipment
to the
1973
September
the
1108 Computer operating
6
February
RDS
full
UNIVAC
Road
the
production
at
EXEC
RDS
By
ever since.
FCCC.
Data conversion
equipment has prevented
the Department
8 at the Fort
System
Design
for regional production
available
in
1974
under
Notes
Field
of Engineering
issue
14
Regions
5
became
later
Computer
Collins
fully
Regions
February
from the
CDC
3100
and 6 from going into
utiliza-tion
full
production.
A meeting
of the
of
FCCC
for
planned
RDS
during
to utilize
Development
3.
the
many slow
Revision
1971 and incorporate
the start of
FY
Other Engineering
FY
The
1975.
on the
currently
-
FSGPCP CPMS
running
on the
will
forests.
RDS Handbook
which
Forest
Critical
to conform
to
of
versions
Region
10 should
at
of
Path
Man
have
full
RDS
support
FCCC include
Purpose Contour Package
Scheduling
-
SAIM
-
Semi-Analytic
SPATL
-
Independent Model
Terrain Information
System
Independent Models
21
in
order
Transformation
since
two phases.
Geometry
Service General
RDS
program enhancements
all
from the previous
DTIS
Digital
on many
available
result
Regions except
Coordinate
be
CDC
now
programs which are operational
COGO
interest
full
FCCC version.
terminals
changes
all
prime areas of
for a version
of the
1975
Fort Collins this April in order to facilitate
of the basic program requirements
speed
all
at
of program options
but not yet implemented
2.
By
is
Incorporation
1.
RDS
detailers
at
FCCC.
AND STANDARDS
CONSULTATION
C. R. Weller
of Engineering
Assistant Director
More on The
The
Laser Range
Cadastral
Range
Laser
Pole
Pole equipment
Duren
engineers
and Branham
Forest
headings
established
2 since January 22.
use in Region
have been using the equipment
Colorado and the Nebraska
National
in
has been in continuous
National
Forest
in
in
Nebraska
the San Juan
averaging
five
record-ings
per day in winter.
Along with orienting
the average
A
number of
good opportunity
exists
at
and Forest
shots to obtain
to employ additional
Service personnel
visited
of a second generation
the possibility
heading has been reduced to approximately 30.
a
green-thumb or
of the true-lines this equipment
complete the running
RCA
and by using the new Hensley form for posting
points-on-line
European
electronics were concluded
slip-on
detector
perfectly
and has been used
in
temperatures
orients.
Instrument manufacturers
The
as practical.
down
with a look
with
Smaller lighter theodolite
concept.
receiver
program people to
similar
laser
transmitter performs
to eight below zero
F.
two-hundredths
Because of heavy snows
this
time.
However
of a
CORRECTION
Number
12 issue
third line listing
685
in
Nebraska
one 3/4-mile
This
foot.
An
is
and Colorado
line in
Nebraska
consistent with
error was inadvertently
of Field Notes.
under
Volume
Please
make
From to
most of the
the accuracy
made
in
the
pen-and-ink
read
E-02
22
lines
cannot be cleared
was pushed through and closed
Foot3
we have had
in
at
the past.
December 1973 Volume
change on page 10
metre3
m3
in
5
the
2.831
at
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