Method Statement of Foundation

CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
Architects & Construction Service Corporation

METHOD STATEMENT
SMC Manufacturing (Viet nam) Factory-phase 1 Project

RC FOOTINGS

Ref No:
SMC-ACS-MS-00-RCF-001 Rev 01

ACSC- CONG TY CO PHAN XAY LAP THUONG MAI 2

SMC-Factory No.1/MS-Footings

Page 1


CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
Architects & Construction Service Corporation

Revision History
Revision
00
01

Date of issue
24/7/2015
01/8/2015

Purpose of issue (approved/ revision)

For Review
For Approval

Submitted by ACSC
Name
Prepared by
Lương Văn Lượng
Reviewed by
Phạm Vũ Nam
Approved by
Nguyễn Văn Trung

Position
Deputy Site Manager
Site Manager
Project Manager

Date

Signature

Approved by KOA
Checked by
QA-QC
QA-QC
HSE
KDA

Position

Date

Signature

Reviewed by
Approved by

Approved by Client Name
Prepared by
Reviewed by

SMC-Factory No.1/MS-Footings

Position

Page 2

Date

Signature


CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
Architects & Construction Service Corporation

METHOD STATEMENT
FOR
RC FOOTINGS
Contents

SMC-Factory No.1/MS-Footings

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
Architects & Construction Service Corporation

1. INTRODUCTION
1.1. PURPOSE
The purpose of this Method Statement is to set the policy for construction procedures and quality
according to Contract Specifications. To outline the work instruction by which RC Footings is carried
out.

1.2. DEFINITIONS:
PROJECT PARTICULARS:
Project name

: SMC MANUFACTURING (VIET NAM) FACTORY-PHASE 1 PROJECT

Address

: Long Duc Industrial Park, Long Duc Ward, Long Thanh District, Dong Nai Province,
Viet Nam.

PARTY:
Client/ Owner : SMC MANUFACTURING VIETNAM CO., LTD
Contractor

: KAJIMA OVERSEAS ASEA PTE LTD.

Responsible for the supervision of Contractors who will construct the podium and all
related activities as outlined in this procedure.

SCOPE OF WORK
The works to be carried out by Sub-Contractor (ACSC) and shall apply for works at Factory No.1 of SMC
MANUFACTURING (VIET NAM) FACTORY- PHASE 1 PROJECT.
1. Construction Reinforcement Concrete Structure works included:
a. Pile head treatment
b. Earth work
c. Formwork
d. Reinforcement Steel Rebar work.
e. Concrete work
2. Finishing works included:
a. Brick work
b. Plaster work.
c. Painting work
d. Tiling work (Wall & Floor)

2. BUILDING DESCRIPTION:
Location:
SMC-Factory No.1/MS-Footings

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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Factory No.1 are located at the corner of Road No.D5 &N2-5 in Long Duc Industrial park as below

Factory No. 1

Description:
-

Building purpose : Factory
Foundation
: Spun piles (D300, 350, 400 mm)
Structure
:RC structures + steel rafter; Slab on grade.
Dimensions:
o Factory
 140m long (14x10m); 60 (4x15m) - 69m wide
 Ground Floor (FL. 0.00m); 1st Floor (FL. +7.25m)
 Height : 11.40m
o Utilities area: 2 x (120m long, 4.5m wide).

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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GROUND FLOOR PLAN

-

Floor load:
o Factory Ground Floor
o WC Ground Floor

o Stair case
o Storage/Utilities

: 40 KN/m2.
: 2 KN/m2.
: 3 KN/m2
: 10 KN/m2
Thay mat cat
nay bang ban
ve moi

CROSS SECTION OF FACTORY No.1
-

Slab thickness:

SMC-Factory No.1/MS-Footings

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
Architects & Construction Service Corporation
o
o
o
-

Area:
o

o

Factory Ground floor slab
: 300 mm thk.
Storage/Utilities Ground Floor slab : 150 mm thk.
1st Floor slab
: 140 mm thk.
Ground floor
+ Factory area
+ Storage/Utilities area
1st Floor

SMC-Factory No.1/MS-Footings

: 9561 m2
: 8400 m2
: 1161 m2
: 9561 m2

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3. ORGANIZATION CHART
3.1. Organization Chart
Project Manager
NGUYỄN VĂN TRUNG (MP: 090 330 7742)

Site Manager
PHẠM VŨ NAM (MP: 093 767 6736)


Deputy Site Manager 1

Deputy Site Manager 2

NGUYỄN HOÀNG TRINH (MP:090 291 1235)

LƯƠNG VĂN LƯỢNG (MP: 093 734 3055)





Site Engineers

QA&QC

Nguyễn Minh Tuấn (MP: 098 314 5069)

Trần Văn Nghiệp (MP: 090 935 6020)


Trần An Toàn (MP: 090 803 3934)
Trương Thanh Việt (MP:093 872 2730)

QS
Lê Trọng Thức (MP:098 967 4457)

Procurement& logistics
Thái Doãn Long (MP:097 799 7711)


Shop Drawings
Hoàng Văn Hải (MP:908 818 1059)

Safety Supervisors
Phạm Văn Mạnh (MP:097 235 2459)
Nguyễn Văn Triểu (MP:093 996 0180)

Construction teams

SMC-Factory No.1/MS-Footings

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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3.2. Assignment
Position
Site Engineer
QA&QC Engineer
Safety Supervision

SMC-Factory No.1/MS-Footings

Factory No.1
NGUYỄN HOÀNG TRINH
NGUYỄN MINH TUẤN
LƯƠNG VĂN LƯỢNG
PHẠM VĂN MẠNH

Page 9

Factory No.9
TRẦN AN TOÀN
TRƯƠNG THANH VIỆT
TRẦN VĂN NGHIỆP
NGUYỄN VĂN TRIỂU


CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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4. FLOW CHART AND DIRECTION OF WORK
The work sequence of construction the RC footings is shown at the following flow chart.

Excavation foundation

Lean concrete

Pile head treatment

Formwork fabrication

Installation of form work

Rebar fabrication

Installation of rebar

Casting concrete

Curing concrete

Back filling

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5. SCHEDULE
Construction Schedule of Footings is attached in Appendix-2.

6. SPECIFIC STANDARD
Reinforced Concrete Footings shall be carried out in accordance with the requirements of:
-

-

SMC MANUFACTURING (VIET NAM) FACTORY-PHASE 1 PROJECT Specification for Footing works.
Current Vietnamese Construction Standards.
+ TCVN 4447-2012 Vietnamese standard 4447-2012 (Earth works - construction, check and
acceptance)
+ TCVN 5593 : 1991 Vietnamese standard 5593-1991 (Building engineering work - Permissible
tolerances in geometry)
+ TCVN 1651-2008 Vietnamese standard 1651-2008 ( Steel for the reinforcement concrete,
part1+2)
+ TCVN 4453 – 1995 Vietnamese standard 4453-1995 (Concrete structures- codes for
construction, check and acceptance)
+ TCXDVN 371 - 2006 Vietnamese standard 371-2006 (Acceptance of constructional quality of
building works).
Related Materials approved by KAJIMA & Owner.

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7. TOOL & EQUIPMENT
The equipment to be used for the construction of Footings is listed below.
Item

Description

Unit

Q’ty

Dump Truck

10 tons capacity

Nos.

2

Back hoe

L= 4.5m,
capacity

0.70m3

ea.

2

Submersible Pump

4 inches,
minimum

H=24m

Nos.

8

Stand by pump for dewatering

Rammer

Nos

10

Compacting backfilled soil

Plate compactor

Nos

3

Compacting for lean concrete

Concrete Vibrator

Nos

4

Concrete cutter

Nos.

2

Nos

2

Gas cutter

Nos

1

Use for cutting surplus pile rebar

Straightening
machine

Nos

1

Use for reinforcing steel work
Diameter <8mm

Cutting machine

Nos

1

Use for reinforcing steel work

Welding machine

Nos

4

Use for reinforcing formwork

Bending machine

Nos

2

Use for reinforcing steel work

Hack-sawing machine

Nos

10

Manufacturing formwork

Screwdriver /Drilling
machine

Nos

14

Manufacturing formwork

Compressor

10m3/min

8. MATERIALS
a/ Concrete: ready mixed concrete (supplied by KOA)
-

For Lean concrete: grade B10
For structure: grade B20

b/ Steel rebar: (supplied by KOA)

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Remarks

Use for cutting surplus pile head


CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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-

With Diameter < 10mm: SR295
With Diameter >10mm : SD390, B15-B35

c/ Form work:
-

Plywood, 18mm thk. reinforced with steel box 5x5 (cm), 4x8 (cm)

9. MATERIALS HANDLING, STORAGE AND DELIVERY
-

-

-

Concrete: Ready- mixed concrete are transported from batching plant to site in concrete truck (6
to 12 m3 capacity). The concrete must be delivered to site within maximum 60 minutes depend
on the mix design of concrete supplier.
Formwork: Formwork will be pre-fabricated then stocked on yard with protection of plastic cover.
Before installing, the formwork will be transported to site and placed near the excavation.
Steel rebar: Steel bars are stored on the steel platform or concrete blocks to prevent the contact
of steel rebar with the ground. All steel rebar are stocked in the steel yard with roofing and cover
with plastic sheet to protect them with rain water.
Other materials are keeping in storage and they are transported to the site work when they are in
used.

10. PREPARATION WORKS
-

Excavation foundation
+ Receiving the construction area transited by KOA.
+ Receiving the coordinate, benchmark system from main Contractor (KOA).
+ Clearing the ground and remove any obstruction on the ground.
+ Set up drainage system for rainwater and underground water inside and outside pit
+ Prepare internal road from the excavation to the stock yard of surplus soil.
+ Setting out excavations with their center lines, dimension and marking on the ground.

-

Pile head treatment
+ Completing piling work by other Contractor.
+ Completing the excavation works.
+ Completing the lean concrete.
+ Manufacturing the steel plate of pile cap starter bars.
+ Marking the cutting level of the piles.
+ Preparing and check the cutting machine.

-

Casting lean concrete
+ Completing the excavation above design level about 100mm high.
+ Drainage and pump water regularly, keep the pit dry.
+ Trimming the surplus soil by hand to the design elevation.
+ Compacting the base of foundation and testing, if required.

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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-

Installation of form work
+ Completing lean concrete
+ Setting out and marking the gridlines and dimensions of footings on lean concrete surface.
+ Pre-fabricate formwork
+ Cleaning and applying release agent on formwork surface, if required.

-

Installation of rebar
+ Shape and dimension of rebar.
+ Machine for fabricate rebar.
+ Obtaining the approved Shop drawings.

-

Casting concrete
+ Inspecting of rebar and formwork (record, pictures).
+ Prepare internal road for delivery concrete
+ Cleaning formwork, lean concrete's surface, pump water out of pit.
+ Check finishing level of concrete
+ Covered starter rebar by PVC sheet before casting.
+ Prepare bucket or slide for casting from top to bottom.
+ Order the concrete

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11. CONSTRUCTION METHOD
11.1. Excavation foundation
•
•

Step 1: Survey and mark the foundation on the ground.
Step 2: Excavate the soil: Using 2 backhoe machines (0.7 m3) to excavate the soil. Factory
No.1 is divided into three zones: zone 1 (axis A-E/ 1-6); zone 2 (axis A-E/ 7-11), zone 3
(axis A-E/ 12-15)
zone 1

zone 3

60000

15000

15000

4500

zone 2

4500

15000

15000

F DN

3000

10000

10000

10000

10000

10000

10000

10 000

10000

10000

10000

10000

10000

10 000

10000

14 0000

1

3

2

5

4

6

7

8

9

10

11

13

12

15

14

zone 1

4500

TEMPORARY ROAD

15000

BACK HOE MACHINE NO.1

15000

SOIL MASS

BACK HOE MACHINE NO.2

15000

60000

MOVEMENT DIRECTION

4500

15000

SOIL MASS

3000

10000

10000

10000

10000

10000

10000

10000

10000

10000

10000

10000

10000

10000

10000

140000

1

SMC-Factory No.1/MS-Footings

2

3

4

5

6

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7

8

9

10

11

12

13

14

15


CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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•

Step 3: Transportation and disposal surplus soil.

a. Stocked soil:
Surplus soil will be transported to the soil reservation location on the site designated by KOA. For the back
filling process, the soil is gathered as masses which less than 1.5m height and more than 1.5m distance far
from the edge of opening hole. It is temporary covered by canvas to prevent the dust and used for back filling
process later.

The volume of soil stocked on construction area (for backfilling) are calculated based on the excavated soil
deducted the volume of concrete of footings and stump columns occupied in excavation. The volume of
excavated soil, volume occupied with concrete and remaining stock soils are shown in table below:

VOLUME OF EXCAVATED SOIL (m3)
No
.
1

Excavation

Location

F1-F2

A-A1
F1
F2

2

FOUNDATION
COM.

A/7
F11
F2
F12

3
4

F1-F1

F1-F2

A
E-E1
F1
F2

5

F2A-F2

E-E1
F2A
F2

6

FOUNDATION
COM.

E/7

11.0
0
11.0
0
11.0
0

Page 16

Volume

213.47
207.57

1.00
2.00
1.00
1.00
2.00
8.00
8.00
8.00
4.00
4.00
4.00

41.16
28.38
31.19
46.85
155.25
150.96
75.11
83.02

1.00
2.00
1.00

F11
F2

SMC-Factory No.1/MS-Footings

Q’ty

41.16
28.38


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1.00
2.00
1.00
1.00
39.0
0
8.00
8.00
3.00
3.00

F12
7
8
9

F1-F1
F1
F2

E
E1/10
E1/10

10
11
12
13
14

F3
F2A
F1A
F3A
F2
TOTAL

EA-E/2-14
A-E/1_A-E/15
A-E/1_A-E/15
A-E/1
A-E/15

31.19
46.85
10.74

20.50
812.03
140.55
85.92
65.96
61.51
2,377.74

VOLUME OCCUPIED BY RC STRUCTURES (m3)
A
1

FOUNDATION
F1( -1800)
F1(-2600)
2 F1A(-1800)
3 F2( -2100)
F2(-2800)
4 F2A(-2000)
5 F3(-1600)
6 F3A(-2100)
B STUPM COLUMN
1 CA1
2 CA2
3 CA3
4 CA4
5 CA5
6 CA6
7 CA7
TOTAL






232.19
11.87
2.54
3.39
49.14
3.64
11.24
139.62
10.74

28
6
8
27
2
8
39
3

21.59
1.37
6.90
5.50
4.13

1.20
1.50
1.00
253.78

12
26
22
33
1
1
4

Volume of compacted soil to be backfilled= 2,377.74 – 253.78 = 2123.95 m3
Volume of compacted surplus soil to be removed= 253.78 m3
Volume of ripped surplus soil to be removed= 253.78 x 1.3 = 329.92 m3
Volume of ripped soil to be backfilled = 2123.95 x 1.3 = 2761.14 m 3

where 1.3 is the coefficient of ripping.
The ripped soil to be backfilled will be stocked on construction areas at height 1.5m with quantity and volume
as shown in table:

No.

SMC-Factory No.1/MS-Footings

Lot

Q’ty

Volume

Page 17

Unit


CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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1
LOT 1
2
LOT 2
3
LOT 3
4
LOT 4
5
LOT 5
TOTAL

2
1
1
2
20

541.815
502.7625
488.09925

717.9
501.003
2,751.58

m3
m3
m3
m3
m3
m3

The location of stocked soil on site as shown in the attached drawing.
The surplus soil will be transported by truck to the stock yard (≈2000 m2) designated by KOA. Remaining soil
will be leveled at height of 0.5m from existing ground level.
ACSC Soil stock

b. De-watering excavation:
Because of construction in rainy season, a collection pit (WxLxH: 50 x 50 x 50 cm) will be dig in each
excavation outside the lean concrete area. The water in this pit will be pump out the excavation through the
hose directly to the nearest open drainage trench along the factory boundary.

11.2. Lean concrete.
•

Step 1: Trimming the soil: This work is carried out by digging to form an even and firm
base at the right bottom levels of foundation.

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
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•
•
•

Step 2: Using the soil compactor to compress the soil to get the level K >= 0.95
Step 3: Using steel box 50x100 to manufacture the form work for foundation lean
concrete layer
Step 4: Casting lean concrete grade B10, stone 1x2

Welding line
Lean concrete
Steel box 50x100

11.3. Pile head treatment.
•

•

Step 1: Designated cut-off level should be marked by marker around concrete surface of
the pile to keep cutting edge clear and the perimeter of cut-off level marking should be
cut in about 20mm depth by small concrete cutter..
Step 2: Cutting the spun piles at the designed level. After cutting, the eccentricity of the
pile center should be surveyed and recorded (by others).
The surplus segments of cut plie will be moved out of the excavation by excavator then
transported and temporarily stocked in the designated stock yard. Later all the remaining
of cut piles will be moved out the site by ACSC.

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REBAR - SD295A
4 Ø12 - L=1000

VIEW "A"

600

100

50
0

300

CONCRETE INSIDE
B20

STEEL PLATE
Ø170x2mm
180

PILE CAP DETAIL

STEEL BAR
2Ø10

60

180
300

60

VIEW A
•

•

Step 3: Install the assembly of steel plate and rebar inside the pile head. It is temporary
hung by the wire fixed to 02 cross rebars on top of pile head. Starter rebars are attached
to steel plate by welding.
Step 4: Casting concrete B20 inside pile head and vibrating concrete.

11.4. Formwork calculation:
Formwork of footings are made of plywood 18mm thk. and steel boxes.

11.5. Installation of Form work
•
•
•
•
•

Step 1: Install the pre-fabricated formwork at the locations and dimensions, which are
marked before.
Step 2: Fix the bottom of formwork with steel box, nails.
Step 3: Adjust the formwork to be plumb and straight with steel propping and adjusting
jack.
Step 4: Fix the corners of formwork with nails and secure the formwork with adjusting
jack against the stake on ground.
Step 5: Fill any gap of formwork with lean concrete with mortar.

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Wooden plate thk. 18mm
SAFTY BARRICADE

1000

GFL± 0.000

Steel box 50x50mm
Base jack

500

Steel box 40x80mm

75
°

450450

Round tube steel D49
STEEL LADDER

590

700

1110

Refer to bottom level of foundation
DRAINAGE HOLE

1110

2000

590

TYPICAL ELEVATION OF FORM WORK INSTALLATION FOR FOUNDATION

Wooden plate thk. 18mm
Steel box 50x50mm

Base jack

Steel box 40x80mm

Drainage hole

Round tube steel D49

TYPICAL LAYOUT OF FORM WORK INSTALLATION FOR FOUNDATION

11.6. Steel works
•
•
•
•
•
•

Step 1: Cleaning rebar surface.
Step 2: Fabricate the steel rebar by cutting, bending in compliance with approved shop
drawings. Tagging the steel rebar.
Step 3: Transport the fabricated steel rebar to site.
Step 4: Marking the positions of rebars on lean concrete surface and place the rebars in
sequence bottom first and then top. Position for lap and lap length as direction
Step 5: Tie the steel rebars securely with wire in correct positions and distance.
Step 6: Insert spacers under and outside of steel cage to form the concrete cover.

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REBAR

SPACER

TYPICAL LAYOUT OF REBAR INSTALLATION FOR FOUNDATION

11.7. Concrete work
•

Step 1: Delivered ready-mixed concrete will be checked of slump as regulation, slump for
foundation should be 8÷10 cm.
Step 2: Concrete will be poured to formwork with chute or concrete pump, depend on
the distance from the concrete truck to the footings.
Step 2: Concrete will be poured layer by layer. Each layer should be less than 0.5m,
casting form inside to outside, form far to near.
Step 3: Using vibrator for compaction of concrete. Vibrating distance is less than 50cm,
and duration of each vibration is not less than 10 second.
Step 4: Check the finished top level of concrete surface and remove surplus concrete.
Step 5: Finishing the concrete surface with troweling.

•
•
•
•
•

SAFTY BARRICADE

COVER SHEET

500

GFL± 0.000

S TART REBAR

STEEL LADDER
Refer t o bottom level of foundation

590

700

1110

1110

2000

590

DRAINAGE HOLE

CASTING CONCRETE

•

Step 6: Curing concrete. After 12 hours casting concrete, the surface of RC footing is
covered by a hessian. Spraying water at least 2 times per day (sunny day). Curing concrete
is not less than 05 days

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SAFTY BARRICADE

GFL± 0.000

COVER SHEET
START REBAR

500

HESSIAN SHEET

STEEL LADDER

700

2000
CURING CONCRETE

11.8. Back filling
+ Marking the elevations of each backfilled layer on footing/stump columns. The thickness of
each layer is not exceed 0.3m/ layer.
+ Backfill the excavation with excavated soil layer by layer.
+ Leveling the soil.
+ Compacting using rammer to reach the designed compaction ratio K≥ 0.95
+ Repeat the backfill and compaction until reach to the finished level.

12. QUALITY CONTROL
With regards to the quality control, all works shall be carried out following the established Project
Quality Control Plan. Method to treat mistake or defect during constructing:

-

Excavation foundation:
+ Locate position of project by survey machine.
+ Determine the level of bottom slab by leveling machine
+ Check dimension of pit by tape.
+ Tolerance for border, center line, dimension of pit: ± 20cm.

-

Lean concrete:
+ Check the surface by survey machine, tolerance ±1cm

-

Installation of form work
+ Check by leveling machine, tape: Axis tolerance ±8mm; Tolerance for the whole foundation
height ±20mm

+ Check tightness of formwork by visual.
+ Check rigidity and stability of bracing.

-

Installation of rebar

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
Architects & Construction Service Corporation
+ Checking material: certificate, check dimension by caliper, take the sample for checking
physical-mechanical.
+ Check the length, number, position, anchor length, joint by visual and ruler.
+ Thickness of protection: checking by tape
+ Tolerance for installation: Spacing among main rebars: 20mm, Stirrups spacing: 10mm.
+ Tolerance for protection layer: Foundation: 10mm.
+ Tolerance for fabrication: The whole length: 20mm, bending: 20mm
+ Lap length: Rebar SD390 Ribbed bar: 40d (tensile), 15d (compressive)

-

Casting concrete
+ Level tolerance on surface: 20mm.
+ Horizontal tolerance of section: ± 8mm.
Back filling
+ Inspect each layer after compacting.

+ Testing compaction factor as technical requirements and method of owner.

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2
Architects & Construction Service Corporation

13. SAFETY PLAN
With regard to health and safety control, all the works shall be carried out following the established
Project Occupational Health and Safety Control Plan (ST-PL-POHSCP).
No.
1

Description of job
Excavation works

Hazards
+Traffic accident
during
mobilization/dem
obilization
+ Accident during
excavation
and
transportation
the soil.
+ The soil around

of foundation can
be slide.

Hazard events
Injury or death to
workers or
operators

Preventive measures
+ Security standby and control
public
traffic.
Mobilization/demobilization
should not carry out during
heavy traffic jam (morning
time/evening time)
+ Excavator should observe
roads speed limits.
+ Follow strictly the method
to prevent the landslide.
Heavy objects must stand by
at least 1.5m from the edge of
opening excavation.
+ Apply the barrier, ribbon &
signboard to prevent the
workers fall down to the pit.
+ Excavator driver must has
license, excavator must be
verify certificate and good
active status.

Action by
Forman /
Supervisor /
Worker

2

Pile cap treatment

Injury of
people/worker

+ Workers must alert when
they start breaking work.
+ Workers wear protective
equipment
during breaking works.

Forman /
Supervisor /
Worker

3

Form and Re-bar
Installation and
Concreting Works

Fall down of

concrete
equipment
accessories
worker hit by
these
falling
objects
Fall down of
concrete
equipment
accessories
worker hit by
these falling
objects

Injury of
people/worker

Forman /
Supervisor /
Worker

4

Removal or
dismantling forms
or any temporary
structures
Backfilling works

Workers struck or
hit by falling fill
materials or any
objects.
Workers struck or
hit by falling fill
materials or
equipments

Injury of
people/worker

+ Workers must alert when
installation of heavy steel
materials
and
during
welding works.
+ Wear protective equipment
during
installation and concreting
works.
+ Provide qualified person
nels to do and supervise the
job.

Injury of
people/worker

Provide proper equipment

platform and qualified
signal man for dump trucks
unloading backfill
materials.

Unsanitary Site
Condition

Scattering of
dirt/garbage and
some chemicals

Damage to
neighborhood
inhabitants

+ Avoid leaking of chemicals
and other solution

5

6

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+ Keep the site clean before

Forman /

Supervisor
Forman /
Supervisor

Forman /
Supervisor /
Worker