SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
Method statement
SAMWHAN CORPORATION
PREPARED BY SONG DA 2.07
1
SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
A. general
Content consists of method statement on construction technology and organisation of
contract package - Topaz tower block 3 and 4 shown in drawing from No.P2A/S000/2 to
No.P2A/S-259/7 and other archetectural drawings of The Saigon Pearl Development Project
at 92 Nguyen Huu Canh street, ward 22, Binh Thanh district, HCMC, Vietnam. Document
includes:
1- Receiving handing over possession, boundary, cordianation system located points
and other related documents.
2- Site preparation and mobilisation of manpower and equipment.
3- Construction of RC structures (column, wall, beam and slab)
4- External and internal brickwork
5- Plastering and tiling work
6- Co-ordination with other contractors during construction (M&E, earthing,
telecommunication & media, alluminum, interior contractors ect.)
7- Completing, cleaning and handing over
B. Technical and organising method
I- Receiving handing over possession, boundary, cordianation system
located points and other related documents.
Possession is to hand over to the Contractor together with documents and drawings by the
Owner after contract is awarded.
1.1. Receiving handing over possession, boundary, and cordination system located
points
A joint handing over is undertaken between the Owner/Consultant and the Contractor.
Handing over is clearly show the location, project boundary on land where to be confirmed
by the Owner/Consultant for contractor’s possession of package. Required possession and

1.3.2. Organizing requirement:
The Owner and Contractor by TRANSMITTAL confirm taking over technical document.
Comments of reality and accuracy or other may found by a team of construction experts or
architects from their studying shall be submitted to the Owner for their review. Written report
of any failure may found shall be submitted to the Owner and Construction Manager within
30 days since technical documents to be passed except force majored (if any) may found
during construction.
Handing over sequence is shown on lay out of “possession handing over sequence”.
II- Site preparation and mobilisation of manpower and equipment.
After having possession from the Owner, site preparation and mobilization of manpower and
equipment are to start promptly.
2.1. Temporary and minor works
This work is including construction of temporary site office, other temporary facilities such as
toilets, water tanks, storage and stockpiling areas and fencing ect.
The facilities shall be arranged at suitable areas near the construction site to ensure not
affected to construction works and permanent works as well as to avoid relocated many time
when required. In fact possession area is very narrow which is not enough space for
worker’s camps and to overcome this situation we already prepared to rent house outside
for them near the site for convenience during contract duration.
(See layout of temporary works No. BPTC – 01).
2.1.1- Site office contains of 2 areas:
SAMWHAN CORPORATION
PREPARED BY SONG DA 2.07
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SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
Site engineer (supervisor) room and staff room. Site engineer room is flaming camp roofed
by tole 60m2 enough space for 24 site engineers. Staff room is 3 office containers-40 feet
and well equipped where includes Project manager’s office, engineer’s room, administrator’s
room, accounting room, material control room enough for 20 people working in.
2.1.2- Staff’s accommodation:

line that have suitable capacity to sub-load. Transmission line to small stations at upper
floors is a main line size 3*35+1*25 and branched to small station every 2 floor.
2.1.8. Material storage:
SAMWHAN CORPORATION
PREPARED BY SONG DA 2.07
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SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
It is provided convenient places for income, stockpiling and transportation during
construction work. According to the proposed schedule, storage areas are planning as
follows:
Rebar and rolling steel stockpiling areas is 10cm concrete cast provided curb to keep dry
from wet or water. With the consumption of rebar about 400 ton per month, the required area
is at least 200 sqm. This area is located near fabrication area and within tower crane arm
reaching.
Cement is stored in flaming house roofed by tole. With the consumption of cement per
month about 300 ton per month mainly for plastering and brick works, the required area is at
least 100 sqm. This area is located near the hoist for convenience of moving up.
Sand area:
Brick area:
2.1.9. Mechanical service area:
This kind of work is very important for construction activities as of steel formwork, and
platform and other maintenance works and services for equipment. Mechanical workshop is
equipped 3 welders – 3 phases, 1 rebar bender-cutter, 2 pipe steel cutter. 2 gas torchlights,
1.5 ton sewer, table welder and other handle machineries ect. This workshop is ran by a
qualified engineer with 12 to 15 mechanics at level 3/7 to 5/7, possession area is estimated
150 sqm located at site. Workshop is steel flaming house roofed by tole.
Temporary works and minor works shall be started as long as the Contractor received
handing over form the Owner. Every preparation work is operated by site
engineer/supervisor and construction teams (Electrical team, plumbing team and mechanical
team…). This period is planed for 7 days shown on master program. Lay out of temporary

structure of building as manufacturer’s instruction.
2.2.2. passenger/material hoist:
During construction of superstructure most of instruments and materials will lifted up by
tower crane, therefore passenger should be used for moving people and/or material to
upper floor and for brickwork and plastering as well.
This kind of hoist has maximum carrying load of 1000 kg equivalent to 12 persons per trip
with the height of building is 138.74m so hoist must be required to meet this condition. This
is a compelling condition subjected to the height of building.
To meet with above conditions we select model CS100 made in China –max load 1000kg –
standard lifting height 90m – lifting speed 40m per minute. It is intended installation of 2
hoists. Locations have been shown in layout No. BPTC – 02; BPTC – 03.
The maximum demand at critical time of schedule is hoist up material for nine top floors
doing the finishing works within 3 months. It is calculated about averagely (66x1.8x1.5x9/90)
= 17.82 ton per day at the height of 120 m with speed of 40 m per minute. The capability of
trip is estimated 2+3+2+3 = 10 minute.
Max trips per day is 24+60/10x50% = 72 ton
Max volume lifted up per day is 72x0.5 ton per trip = 36 ton
Selects 2 passenger hoists-1000kg-standard lifting height …-speed 40 m per minutes per
block. Locations show on “lay out of site organization”
Hoists are to brace to the main structures of building in compliance with manufacturer’s
instruction.
To ensure the continuous communication between on land, tower cranes and hoists walkie-
talkie system – KENWOOD made in Japan – speaker DAIMOND battery made in China
should be provided.
2.2.3. Main equipment selected:
Main equipment shall be mobilized to site according to the schedule listed in table bellows:
No
Description of equipment
(type, model, brand)
Unit Qty

9 Level SOKIA
nos
2 2005 Japan
10 Stable concrete pump 150m, 60m3/h
nos
3 2004 Japan
11 Water pump H200m, Q20m
3
/h nos 3 2005 Italy
12 Complex scaffolding set 40 2005 Vietnam
13 Single supporting post post 1000 2006 Vietnam
14
Pre-fabricated for 2 floors m
2
10.00
0
2006 Vietnam
15 Concrete breaker nos 10 2006 Japan
16
Finishing scaffolding m
2
30.00
0
2006 Vietnam
17 Needle D36-:-50; 1,1kw nos 40 2006 China
18 Handle driller MAKITA nos 8 2006 Japan
19 Table vibrator nos 8 2006 China
20 Welder 23kw nos 15 2006 Vietnam
Equipment shall be mobilized to site based on the schedule of work and purpose of work.
Equipment is required to check by relevant parties before and during construction. The

Technical management:
Equipment and machinery service: 01 mechanical engineer with 6 years working
experience and other 3 engineers who can control, arrange and maintain equipment for
all over the project.
Administration: This group includes 10 persons who manage the administrative and
security works.
Material management: This group includes 4 persons who provide materials for project
and co-ordination with suppliers for delivery and management.
Safety, environmental and medical management: 01 safety officer and 4 assistants who
have at least more than 3 years to make the suitable program for safety, environmental
and medical plans.
04 engineers/supervisors are in charge to formworks
04 engineers/supervisors are in charge to reinforcement works
02 surveyors are in charge to surveying works
04 archetects/superviros are in charge finishing works.
04 archetects/superviros are in charge designing, as-built and quantity works.
Material management: This group includes 3 persons who provide materials for project
and co-ordination with suppliers for delivery and management.
07 staff are deliverying, supplying and seecking for small materials.
Administration: This group includes 2 persons who manage the administrative and
security works.
06 security guards
Safety, environmental and medical management: 01 safety officer and 2 assistants are
in charge to safety, environmental and medical works.
Project manager in Contractor’s rules conducts the above titles.
2.3.2. Construction team:
Including construction teams working directly on site with capability estimated in 8-hour
working shift.
Formwork team: 04 teams - 25 workers per teams.
Reinforcement teams: 04 teams - 20 workers per teams.

2.4.11. Ready mix concrete: Holcim, Linh Thanh, UNI EASTERN VIETNAM CO., LTD, Tra
Mi concrete, Mekong Concrete, Lafarge conrete are big suppliers who can satisfy the
capacity.
2.4.12. Chemical and admixture (Sika): Special chemical and admixture using for
complecated and special structure or works shall be supplied by Sika Vietnam Co., Ltd.
III- Construction method for RC superstructure (column, wall, beam
ECT).
3.1. RC column:
RC column of building is installed through up from basement to transmission slab with cross-
section 1x2m; 1x1m. Height of column from 3.8m to 4.45m.
3.1.1. Formwork:
Bamboo formwork is tied back by anchor system and braced properly to the dimension of
column see in detail shop drawing of column formwork.
It is required to follow the surveying data provided. To ensure the dimension before
formwork installation the points must be fixed by welding or drilling. Use bolts for anchoring
SAMWHAN CORPORATION
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SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
and bracing to provide properly supporting. Vertical formwork is supported by supporting
system and checked by plump and thedolite. Before concreting required elevation should be
marked to avoid failure of the nest works. Formwork is to provide firm, tightness, alignment
and vertical. Other data must be followed design requirement. Formwork can remove after
48 hours.
3.1.2. Rebar works:
Reinforcement includes main rebar and stirrup. Main rebar has bigger diameter they are all
fabricated on site at fabrication area and hoist up by tower crane. Installation of rebar is to
supervise by site engineers in accordance with design to ensure the lapping, spacing,
location and dimensions.
3.1.3. Concrete works:

PREPARED BY SONG DA 2.07
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SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
All pre-pouring concrete works are checked before concreting like inspection of formwork
and rebar, concrete supplying, pumping system, working platform, manpower, equipment
and machinery ect. Besides our mentioned works, the good co-ordination with other
contractor for related works like M&E contractor for embedded system inside RC structure.
Concreting is only allowed to start when the necessary requirements are met.
Ready mix concrete is transported to site by truck mixer 6 m3. Slump is required to check
before placing. To avoid non-stopped supplying contractor prepares 01 concrete pumps,
SANY HBT60C-1413DIII-50m3- per hour-140m pump up to location and 01 stand by one
SANY HBT60C-1413DIII in good working condition and ready to support if required.
Contractor intend to fix 3 piping system per block at convenient location for pumping in
which 2 piping system using often and other one is stand by one. Placing concrete for beam
is done first then slab later, which is divided in every 3-4 m section each. Waiting time is not
exceeding 3 hours. During concreting requires monitoring the deflection of formwork or
unforeseeable thing may have (if any) to treat in time. Placing in pile is not allowed to avoid
over loaded problem causing formwork may be collapsed. Curing concrete is maintained by
clean water during 01 week.
3.4. Beam and slab concrete of transmission floor (1
st
floor):
This is a special block of beam and slab structure having big cross-section of beam
(H*B=2500*2400) and slab thickness is 1000. This type of structure is quite different in
working sequence.
3.4.1. Formwork:
Formwork arrangement basing on the calculation of load on formwork , supporting and load
capability of under slab in the impaction of working load. Sequences of work as well as
calculation are indicated in Calculation for formwork and scaffolding. From the calculation,
solution of construction is as follows:

st
floor. To
reach the target of this work 4 concrete pumps shall mibilised to site working at same itme.
Cold concrete is proposed to avoid shrink during concrete freezing. Reducing slump is an
other solution to avoid shrink.
Placing concrete in same level to avoid over loading in area.
3.5. Beam and slab of typical floor:
Specification and sequence are required to comply with the same sequence of podium floor.
This step is started the same sequence of work. So how to prepare formwork to save time
and materials is very important.
3.5.1. Formwork:
Supporting system is type A50 or H42 combined with timber size (80 x 100) mm and cold
profiled size (50 x 100 x2.5) mm and 50 x 50 x 2.5 for slab supporting and 50*100*2,5 timber
100*80 for beam supporting.
Beam bottom formwork is formwork combined cold profiled size 20 x 40 x 2 and 1.5cm
bamboo plywood.
Slab formwork is plastic one - FUVI.
Other opening shall be closed by bamboo plywood.
Specification is required to comply with the same sequence of podium floor.
3.5.2. Rebar and concrete:
Same as podium floor.
3.6. RC staircase and water tank:
This kind of work for whole project is not very big and it is planed together undertaking with
other work with the same sequence of others.
RC structure water tank: Formwork is steel flaming plywood and supported by steel post.
After installation of formwork, centerline and elevation are to determined by theodolite and
total station in compliance with design for rebar work later. Final check to construction joints,
lapping or welding, tightness or firmly before concreting work.
Using tower crane and concrete pump for concreting staircase and water tank.
Concreting for wall is placed by layer 50 cm thickness and well vibrated by D40 vibrator.

floor at elev. +44.79m to +74.04m.
3
rd
layer: from 20
th
floor to 29
th
floor at elev. +74.04m to +106.54m;
4
th
layer: from 30
th
to roof top at elev. +106.54m to roof top.
Brickwork is started from 2
nd
layer up according to the detail progress attached.
Professional surveyors shall provide enough data like center line, elevation, locations before
works can start.
Tolerance is followed specification.
Before the next brickwork, start requires clean the join and watering brick. Any hit or
vibrations are not allowed with brick wall just finished.
Brick is watered before masonry and mixed design is required to meet as submitted.
Provide lay out of material stockpiling and area under construction.
Using level checks location and elevation of other embedded works (if any)
Mixed design should be made and checked during construction (record must be followed as
concrete works)
After lay-out and markings had been made, roughening and cleaning of concrete surface
shall be made by using manual labor or electric driven squabbling machine, this is to ensure
a proper bonding between concrete slab and brick wall. Apply a bonding agent approved by
the Owner/Main Contractor on the surface affected before rendering base mortar. Inspection

Mixer and pump mix Motar up by special pump
Mixed design should be made and checked during construction (record must be followed as
concrete works)
5.1.2. Execution:
Plastering is only allowed to start :
Brickwall’s surface is dry.
Brickwall surface is cleaned.
Embedded work is finished
Surveyor will establish off-set marking from wall to be rendered, provide a button as a guide
for determining the surface finish of the wall.
Establish and mark elevation each wall to be used for the determining the correct elevation
of the openings and other related works.
Internal plastering is following sequence from basement to roof, and external is in contrast
with internal. The sequen of work is from ceiling → beam → wall, this sequence is forced to
avoid other work damaged.
At locations have thickness is >= 2cm should be divided into 2 layer, each layer is <= 1,5cm
not thiner than 5mm. privious surface is roughed for good bonding of next plastering.
Using 2.5m measure to flat surface. Floating in circle direction must ensure lapping in order.
To minimise cracks on surface, platering is required flat in desinged thickness and not to
derectly faced under the sun.
5.2. Tiling work:
SAMWHAN CORPORATION
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SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
5.2.1.Material for screeding, floor tiling and wall tiling:
Sand: Aggregate size is according to the specification and free from dirt.
Cement: Using cement PCB30 is not allowed stored over 3 months.
Water: Clean anf free from other matters stored in tank or covered contain.
Motar is mixed by mixer and pump up by special pump

White cement liquid is to fill up to joints for finishing surface.
SAMWHAN CORPORATION
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SAIGON PEARL PROJECT – PHASE 2 - SUPERSTRUCTURE
After 10 minutes using soft dusty or rubber clean all dirty matters on surface and curing
finishing surface properly.
Work is to final check to how surface is flat, firm, uniformed color, tight and hollowless.
VI- Site organisation and contractors co-ordination:
Site organisation is very important role in construction quality, progressive, safety and
effectively.
6.1. Site organisation for RC, brick work and finishing work.
Preparation works are mentioned in items 1 & 2 which is the key of target, and quality.
Learn to this contractor considers preparation works is necessary . RC structure of block 3
and 4 are planed to commence after 1 weel. Schedule of item of work is indicated in
master program. Why the work of 2 block not carried out at same time because of
contractor try to avoid the risk of over works of concreting and save formwork by exchange
of pre-fabricated formwork. This solution save alot of time and ensure the quality of work.
Conractor plans working 2 shifts per day, the best solution to reduce the time. The
manpower mentioned in item 2.3 provides enough for the whole of wok.
Lay out of tower crane show in (site organisation). The advantage of provision 2 tower
crane is they can support each other when required.
According to the submitted program the direction of brick work and finishing work go the
same with RC structure but slower than RC work a division layer of building height (equal
to 9 floors). The reason why contractor choose this solution because it is safety and
progressive. External scaffolding/safety scaffolding is installed following the construction
layer as divided above. Detail of this indicates in finishing work area.
Workers working on site is stated above which divided into construction teams who are
skilled full working in accordance with method statement. This solution contractor chooses
is the best that can reduce the time, increase the capacity, fit with big scale project. The

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