ADT 300D
Production Estimating Program
ESTIMATING PURPOSES
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Read
instruction sheet before starting. Yellow colored cells are for job entry
data; light blue cells contain
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information;
gray cells contain the grade calculator if needed.
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Material
Density (lbs. per bank cubic yard)
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Rated ADT payload is 60,186 lbs.
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Load Factor
(see instructions)
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Rated capacity is 21.6 c.y. heaped
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ADT Payload
(lbs)
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Excavator
Bucket Size (heaped c.y.)
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Fill Factor
(see above)
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Base Cycle
Time of Excavator (sec.)
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Loose material 17 sec.
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Medium material 22 sec.
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Hard material 27 sec.
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Sec.
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Min.
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Excavator
wait & repositioning allowance (sec.)
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Total Cycle Time
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Normally 1.5 sec. if next ADT is in
position;
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sec. if not in position
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Calculated
excavator cycles per ADT would be
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The actual number is
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cycles.
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Enter x
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in the yellow cell (B17) to select
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as the number of excavator cycles.
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Number of cycles selected
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Haul
(see below)
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Grade %
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Grade %
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Haul Road
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Total
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Time
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Distance (ft)
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Adverse
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Favorable
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Factor
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Resistance
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(min)
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MPH
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Section
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A
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Section
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B
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Section
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C
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Section
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D
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Section
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E
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Section
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F
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Section
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G
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Section
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H
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Section
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I
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Section
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J
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Section
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K
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Tot. Dist.
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Tot. Time
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Avg. MPH
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Haul
Road Description
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Factor
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Very firm and smooth, well
maintained
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1
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Use whole
numbers only. Max calculated total
resistance is 49 on the haul and 60 on the return. If vehicle speed will be reduced by the driver for safety or other reasons
on any section, select a haul road factor that will result in the desired
speed. Example: ADT will be
negotiating curves on a downslope where the computed speed would be 30 mph,
but desired safe speed would be 10-12 mph.
Select a haul road factor that would result in a total resistance of 4
on the haul or 10 on the return.
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Firm and
well maintained
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2
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Firm with
flexing or gradual undulations
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3
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Giving but
fairly smooth: 1" tire penetration
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4
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Soft,
smooth surface: 2" of tire penetration
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5
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Soft,
smooth surface: 3" of tire penetration
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6
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Very soft
with 4" of tire penetration
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8
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Very soft
with 8" of tire penetration
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14
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Extremely
soft with 12" of tire penetration
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20
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Extremely
soft with 16" of tire penetration
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26
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Extremely
soft with 20" of tire penetration
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32
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Important: Payload is
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lbs. over/ ( - if under) rated load.
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The
total haul road
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resistance
factor was automatically
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for each haul section.
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Grade
Calculator
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Enter degree of grade (up to
16 deg.)
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1
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Read % of grade
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Enter
first number of ratio to one, e.g. 12 in a 12:1
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1
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Read % of grade
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Fill
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Positioning
and dump time (sec.)
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Fast
.5
min.
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15 Sec.
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Average .75 min.
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45 Sec.
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Slow > 75 Sec.
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Return
(see below)
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Grade %
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Grade %
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Haul Road
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Total
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Time
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Distance (ft)
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Adverse
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Favorable
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Factor
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Resistance
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(min)
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MPH
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Section
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Section
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Section
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Section
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Section
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Section
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Section
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Section
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Section
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Section
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Section
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Tot. Dist.
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Tot. Time
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Avg. MPH
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Default
Delay (Acceleration/deceleration calculated by spreadsheet)
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Sec.
(haul and return)
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Additional
Delay (Record any anticipated maneuver/delay time for each ADT cycle in
sec.)
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Examples
of additional delays are: Making sharp turns on high speed sections (8 sec.
delay per turn), crossing highway, going up short slope for which there is
not a separate section, intentionally driving at slower than max speed on any
high speed sections (if not accounted for in haul road factors). Do not include wait at loading
area--account for that in cell F13.)
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Total number of BCY to be moved
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or
Tons to be moved per hour
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Number of hours for job
completion
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Weeks (40 hr)
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PRODUCTION
ESTIMATE
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Estimated Load (BCY)
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Actual excavator cycles per load*
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Effective cycles per load
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Time (min)
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Load
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Haul
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Dump
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Return
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Delay
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Total
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Time (sec)
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Load
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Haul
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Dump
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Return
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Delay
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Total
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Total Distance (ft)
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Average Speed (MPH)
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Includes haul, return,
and delay.
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50 min hr
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60 min hr
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Cycles per Hour per ADT
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50 min hr
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60 min hr
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Production per ADT in BCY
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Production per ADT in
Tons
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Number of ADTs needed to complete
job on time (50 min/hr)
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(May require larger or additional
excavators)
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Maximum number of ADTs
that can be employed
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(Adjusted for excavator bottleneck)
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BCY Hours
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BCY Weeks
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Tons Hours
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Time required for
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ADTs to complete job
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Time required for
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ADTs to complete job
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Time required for
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ADTs to complete job
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* Total loading time is
based on
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full cycles. Production (BCY) is based on
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excavator cycles per truck.
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The production estimates are based on gradeability performance
calculations and field tests. Results
on any given job can vary significantly if trucks are out of specification
(especially engine and tire inflation), operators are driving at less than
maximum speed for the conditions, etc.
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