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8/18/2019 Embankment Construktion Metod.pdf
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Spirit of Innovation
Location of the selected embankment work
is in stopway, runway, and shoulder runway
STA 0+090 to STA 2+410. The work also will
back fill the location in runway that has
been excavated in previous work. We do this
because in new design the elevation of
proposed design is higher than the previousone.
STA 2+410STA 0+090
Note:
Start of Work
Finish of Work
Direction of Work
Work Area
• Stopway
Length : 120 m
Width : 60 m
• Runway
Length : 2200
Width : 45 m
Width (turning pad) : 47.5 m
• Shoulder Runway
Length : 2214.76 m
Width : 7.5 m
Total Area : 152125 m2
MaterialEmbankment : Selected Sandy Gravel From
Tono River
Flowchart illustration
CONTINUE TO NEXT LAYER
SELECTED EMBANKMENT
(LAYER1)
START
FINISH
Q
LAND CLEARING
Yes
Yes
No
No
SUBGRADE COMPACTION
COMPACTION (LAYER 1)
Q
LAND GRUBBING / STRIPPING
SITE MANAGEMENT AND WORK AREA
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Technical Specification
• Before Embankment Construction the surface of the ground shall be
graded and compacted to achieve 90% of maximum dry density to a
depth of 200 mm below resulting ground.
• The Fill is compacted to a minimum of 95% of maximum dry density.
The area will be divided into 18 lanes. The width of each lane 2.5 meter. It refers to
the spesification and also the equipment ability. For compaction, we’ll use two
vibro rollers. One vibro start from the left side to centerline. And other start from
centerline to the right side. If later on the equipments added for acceleration, the
method will be adjusted in the field.
The material will be spread 100 meters in advance of rolling. Number of passes is
10 passes. It get from trial that has been done before.
SEQUENCE
Note:
Start of Work
Finish of Work
Direction of Work
18 Lanes
Equipment lanes and passes
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The area will be filled by Selected sandy gravel from tono river. Backfill will be
divided into several layers (number of layers depend on the depth). Backfilling will
be done under runway and shoulder pavement. Start from subgrade which has
been compacted until reach the elevation bottom base course.
The thickness of each layer 20 cm in compacted condition and maximum 25 cm in
loose depth. The test will be done in each layer. If the requirements are met, then
the work continue to the next layer.
In the layer width will be made a longer span than the upper layer (see the picture
above) to avoid the landslide and to tie the layer with embankment in stripway
that will be done later on.
SEQUENCE
Compacted Subgrade
8% CBR
Selected Sandy
Gravel 35% CBR
Bottom Base
Layer @20 cm
Total Layer
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1 Preparation
The contractor prepare the equipments and access of the equipments to
the site. Then the surveyor will measure and install the location of boundary
markers clearing based on drawing.
LAND CLEARING
Clearing work
Start
Finish
Preparation
Transport material to
disposal area
Q
No
Yes
Equipments
• Bulldozer : 1 unit
• Excavator : 1 unit
• Dump Truck : 4 unit
Resources
• Operator : 2
• Driver : 4
• Surveyor : 1
• Asisstant Surveyor : 1
• Helper : 2
• Supervisor : 1
• Safety Officer : 1
Productivity : 800m3/hour
METHOD
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2 Land Clearing
3 Transport to disposal area
The material rubbish of cleaning result will be dumped to the disposal area
that have been approved using dump truck and excavator to take material
into dump truck.
Excavator
Clearing the bushes and other material that are not needed anymore using
bulldozer. The material will be stacked in some spots to ease the excavator loadthem to the dump truck.
LAND CLEARING
METHOD
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1 Preparation
The contractor prepare the equipments and access of the equipments to
the site. Then the surveyor will measure and install the location of boundary
markers grubbing/ stripping based on drawing.
LAND GRUBBING/STRIPPING
Flowchart illustration
Start
Preparation
Yes
Q No
Finish
No
Yes
Removal Grubbing
material and stripping
top soil
Transport to dump area
Q
Equipments
• Bulldozer : 1 unit
• Excavator : 1 unit
• Dump Truck : 4 unit
Resources
• Operator : 2
• Driver : 4
• Surveyor : 1
• Asisstant Surveyor : 1
• Helper : 2
• Supervisor : 1
• Safety Officer : 1
METHOD
Productivity : 400m2/hour
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2) Removing existing bushes, undergrowth, etc and stripping top soil.
Stumps exposed or buried logs, bushes, undergrowth, etc will be
grubbed up by bulldozer. Then stripping the top soil to prevent
contamination and subsequent mixing of the the selected embankment
materials with organic soils.
.
3 Transport to disposal area
The material rubbish of cleaning result will be dumped to the disposal
area that have been approved using dump truck and excavator to take
material into dump truck.Excavator
LAND GRUBBING/STRIPPING
METHOD
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METHOD
Start
Preparation
Yes
Finish
Spreading
Compacting
Q
No
Yes
Flowchart illustration
SUBGRADE COMPACTION
Equipments
• Motor Grader : 1 unit
• Vibro Roller : 1 unit
• Water tank : 2 unit
1 Preparation
The contractor prepare the equipment and access of the equipment to the
work site. Then the surveyor put up stakes and elevation plans of the
subgrade.
Resources
• Operator : 2
• Driver : 2
• Surveyor : 1
• Asisstant Surveyor : 1
• Helper : 2
• Supervisor : 1
• Safety Officer : 1
Productivity : 300m2/hour
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Final compaction by vibro roller and also by spraying water to the
compaction area surface. After that, the subgrade density field tested and
witnessed by consultant.
3) Compacting
To obtain the elevation plan subgrade surface using a motor grader. The
Ground is spreaded and levelled by motorgrader. Then doing initial
compaction using vibro roller followed by watering to the surface using
water tank until reach the optimum water content.
2) Spreading
METHOD
SUBGRADE COMPACTION
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1) Back Filling
The material is selected Sandy Gravel from tono river. The dump truck bring
the material from stock pile and place it to the location.
SELECTED EMBANKMENT
Start
Preparation
Backfilling
Finish
Spreading
Compacting
Q
No
Yes
Equipments
• Motor Grader : 1 unit
• Vibro Roller : 2 unit
• Dump Truck : 4 unit
• Water Tank : 2 unit
METHOD
Resources
• Operator : 3
• Driver : 6
• Surveyor : 1
• Asisstant Surveyor : 1
• Helper : 2
• Supervisor : 1
• Safety Officer : 1
Productivity : 100m2/hour
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2) Spreading
3) Compacting
To obtain the elevation plan of selected embankment using a motorgrader. The material will be spreaded and levelled by motor grader until
we get the thickness plan of layer in loose soil. As mentioned in
spesification, The materials shall be laid in layers not greater than 250 mm
loose depth. But it may be changed by considering of compaction trials
result.
Compacting the layer with vibro roller with a several passes (number of
passes depend on the trial test) then followed by watering with a water
tank. After compaction work, the surveyor will check the thickness of layer.
The layer density field tested and witnessed by consultant. If it takes the
requirement, the work continue to back fill the next layer.
SELECTED EMBANKMENT
METHOD
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TRIAL TEST
Before embankment throughout the area, we do trial test for compaction
work. The purpose of the trials is to optimise the method of working to
achieve the compaction requirement. Material of selected sandy gravelfrom tono river shall be placed in a loose layer not greater than 250 mm
in thickness.
The area 45 m wide is divided into 4 zones. We name them as Zone A, B,
C, and D. Each zone having a different number of passes.
A
B
C
D
8 Passes
10 Passes
12 Passes
14 Passes
Requirement
• Field CBR : minimum 35%
• Laboratory CBR : minimum 35%
• Dry Density : Minimum of 95% of maximum dry density
Method
Result
From trial test that has been done, we get the minimum passes that meet the
requirement is 10 passes.
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1. Each personnel using general safety equipment's (mask,
glasses, safety boot, gloves, etc.)2. Provide flagman to control traffic circulation
3. Provide warning sign
4. Provide working border area
5. Periodic safety patrol control
6. Tool box meeting before and after work
7. Provide safety officer
Standart safety equipments :
SAFETY AND ENVIRONMENT
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