Method Statement of Brickwork

CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation Reviewed by Nguy n Hoàng Trinhễn Hoàng Trinh Site Manager Approved by Nguy n Văn Trungễn Hoàng Trinh Pr

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METHOD STATEMENT

SMC Manufacturing (Vietnam) Factory-phase 1 Project

BRICK WORK & PLASTER WORK FACTORY No.1

Ref No:

SMC-ACS-MS-01-BRW-001 Rev 02

ACSC- CONG TY CO PHAN XAY LAP THUONG MAI 2

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CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2

Architects & Construction Service Corporation

Reviewed by Nguy n Hoàng Trinhễn Hoàng Trinh Site Manager

Approved by Nguy n Văn Trungễn Hoàng Trinh Project Manager

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1 INTRODUCTION 4

1.1 PURPOSE 4

1.2 DEFINITIONS: 4

2 BUILDING DESCRIPTION: 5

3 ORGANIZATION CHART 8

3.1 Organization Chart (Factory No.1) 8

3.2 Assignment 9

4 SCHEDULE 9

5 SPECIFIC STANDARD 9

6 SCOPE OF WORKS: 10

7 FLOW CHART AND DIRECTION OF WORK 13

8 PREPARATION WORKS 14

9 CONSTRUCTION METHOD 14

9.1 Brick work: 14

1 Mortar & mixing mortar 14

2 Wall ties (Dowel bars): 15

3 Brick wall construction method: 16

4 RC lintel & siffener 18

5 Work sequence: 19

9.2 Plastering work: 21

1 Mortar & mixing mortar 21

2 Construction method: 21

3 Work sequence: 25

10 RESOURCES 27

10.1 TOOL & EQUIPMENT 27

10.2 MATERIALS 27

1 Type of material: 27

2 Materials handling, storage and delivery 27

11 QUALITY CONTROL 29

12 RISK ASSESSMENT 30

13 SAFETY PLAN 30

14 APPENDIX 31

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Most of brickwork are for walls of Utilities Building and will be applied from the ground to 1st floor ofbuilding All walls will close the spaces between concrete structures of column to column and slab toslab, therefore they are classified in non-load-bearing walls

There will be some openings on the brick wall at location of doors and windows Around theseopenings, reinforcement concrete stiffener and lintel beams will be cast before to carry out the brickwalls

After brick walls have been completed, the plastering will be applied on both sides of them, if any

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

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2 Finishing works included:

- Building purpose : Factory

- Foundation : Spun piles (D300, 350, 400 mm)

- Structure : RC structures + steel rafter; Slab on grade

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o Factory Ground floor slab : 300 mm thk

o Storage/Utilities Ground Floor slab : 150 mm thk

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GFL+11.900T.O.BEAMGFL+13.650T.R.BEAM

CANOPY; STEEL BEAM

CORRIDOR ZINC ROOF SHEET

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TYPICAL CROSS SECTION

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Deputy Site Manager 2

LÊ LONG HẬU (MP: 093 734 3055)

Nguyễn Minh Tuấn (MP: 098 314 5069)

Nguyễn Văn Hào (MP: 0938.722.730)

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3.2 Assignment

NGUYỄN VĂN HÀO

LÊ VĂN TUẤTBÙI CÔNG HUYNH

4 SCHEDULE

Construction Schedule of Brick work and Plaster work is attached in Appendix-1

5 SPECIFIC STANDARD

Brick work and plastering works shall be carried out in accordance with the requirements of:

- SMC MANUFACTURING (VIET NAM) FACTORY-PHASE 1 PROJECT Specification for Concrete works

- Current Vietnamese Construction Standards

1 TCVN 7572 & 7570 Test method & Acceptance for Coarse & Fine Aggregates

2 TCXD 127: 1985 Fine sand for concrete and mortar, use of fine sand

3 TCVN 2682:2009 Specification for Portland Cement

4 TCVN 5438: Cements – Terminology and Definitions

5 TCVN 9202: 2012 Cement for brick work and plastering work- Masonry Cement

6 TCVN 6260: 2009 Portland Cement Mixtures – Technical Requirements

7 TCVN 4506:2013 Water used for mixing concrete & cement mortar

8 TCVN 5992: 1995 Sampling water for testing

9 TCVN 6492: 1999 Determination of pH of water

10 TCVN 2671: 1978 Determination of organic contaminants in water

11 TCVN 4560: 1988 Determination of total dissolved salt content in water

12 TCVN 3118: 993 Method for determination of concrete strength

13 TCVN 9115: 2012 Assembled concrete and reinforced concrete structures

-Practice for erection -and acceptance

14 TCVN 1450: 2009 Hollow burnt clay bricks

15 TCVN 1451: 1998 Solid burnt clay solid bricks

16 TCVN 6477: 2011 Concrete blocks

17 TCVN 5593 : 1991 Building engineering work - Permissible tolerances in geometry

18 TCVN 9377-2:2012 Finishing work- Construction and acceptance- Part 2: Plastering work

19 TCVN 3121-1:2003 Mortar for masonry - Test methods Part 1: Determination of

maximum particle size of aggregate

20 TCVN 3121-2:2003 Mortar for masonry - Test methods Part 2: Sampling and

preparation of sample

21 TCVN 4314: 2003 Mortar for masonry – Specifications

22 TCVN 6355-2:2009 Bricks – Test Methods Part 2: Determination of

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26 TCVN 4459:1987 Cement mortar mixing and use of cement mortar

F

1st FLOOR WALL LAYOUT

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Based on the characteristics of walls, they are divided into the types as below:

- Type MW + B80a & MW+DW 75i : 80mm thk ,1.10m high

Mostly this type is applied for the perimeter wallscombined with metal siding or insulation walls:

o On Ground floor: mostly placed on grid A1,E1, 15, 15A

o On 1st Floor: mostly placed on grid A1, E1,

80 mm thk, full height from floor to the ceiling

These wall types are mostly applied for the inside and dividing walls of the rooms in Office, Utilities area on ground and 1st floor

Depending on the finishing, these walls will be applied with plastering, painting or tiling

INSIDE

MW+B80b INSIDE

STEEL PARTITION

METAL SIDING LGS 75

BRICK WALL PLASTER w/PAINT

METAL SIDING BIRDNET

METAL SIDING FLASHING

BRICK WALL PLASTER W/PAINT

R.C LINTEL 80x200 PLASTER w/ PAINT

(12.5 kg/ m³)t 50 w/ PAINT

FLASHING

BRICK WALL+ TILE

GYPSUMBOARD 12.5THKLGS 75

8015 105

PLASTER w/ CERAMIC TILE

BRICK WALL

WALL TYPE LEGEND

8015 120

8015 130

BRICK WALL PLASTER w/TILE

8015

(FIRE RATED WALL)

STEEL PARTITION

METAL SIDING LGS 75

INSIDE INSIDE GLASS WOOLINSULATION

(12.5 kg/ m³)t 50 w/ PAINT

FLASHING

BRICK WALL+ TILE

B80T0 B80T1 BRICK WALL+ TILE B80T2 BRICK WALL+ TILE B80P0 BRICK WALL+ PLASTER B80P1 BRICK WALL+ PLASTER B180P1 BRICK WALL+ PLASTER DW75i LGS 75+GYPSUM BOARD

GYPSUMBOARD 12.5THKLGS 75

8015 105

BRICK WALL

WALL TYPE LEGEND

8015 120

(FIRE RATED WALL)

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METAL SIDING LGS 75

R.C LINTEL 80x200 PLASTER w/ PAINT

(12.5 kg/ m³)t 50 w/ PAINT

FLASHING

BRICK WALL+ TILE

8015 10

BRICK WALL

WALL TYPE LEGEND

8015 12

(FIRE RATED WALL)

180 mm thk, full height from floor to the ceiling

This wall type is applied for the inside wall of Electricroom on Ground floor and the wall at connection corridor

STEEL PARTITION

METALSIDINGLGS 75

BRICK WALLPLASTER w/PAINT

METALSIDINGBIRDNET

METALSIDINGFLASHING

BRICK WALLPLASTERW/PAINT

METALSIDINGFLASHING

BRICK WALLPLASTERW/PAINT

PLASTERw/ PAINT

GLASS WOOL(12.5 kg/ m³)t 50w/ PAINT

FLASHING

BRICK WALL+ TILE

GYPSUMBOARD 12.5THK

LGS 75

PLASTERw/ CERAMIC TILE

BRICK WALL

WALL TYPE LEGEND

BRICK WALLPLASTER w/TILE

8015

(FIRE RATED WALL)

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7 FLOW CHART AND DIRECTION OF WORK

The work sequence of Brick work and Plastering works are shown at the following flow chart

1 RC Structures (Columns, slab, wall)

construction Covered by previous submittal

2 Installing wall ties from columns Start of Brickwall

3 Positioning wall by marking on slab, column

4 Preparing working scaffolding & platform

5 Preparing brick & mortar

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All brick units shall be moistened by water 1- 2 hours before executing the construction.

D Scaffolding preparation:

+ Scaffolding will be installed aside the wall and be propped/braced securely

+ Install platform and handrail on each story of scaffolding

+ Provide the ladder on scaffolding from the ground to the working level

9 CONSTRUCTION METHOD

9.1 Brick work:

1 Mortar & mixing mortar

Sand for mixed mortar shall be natural sand free from any deleterious materials such as clay, flaky or elongated particles, mica, shale or other laminated materials, organic impurities,iron pyrites Sand shall be clean, hard, durable, crushed It shall be thoroughly washed and all dirt, shells etc removed before use

Water for brick work shall be clean and uncontaminated potable water from the city main supply or any other approved source free from harmful matter

Mortar type to be used shall be sand-cement mortar, class mark #100 (28days compressive

strength 10 Mpa) with its proportion: 1 part of cement: 3 part of sand in volume

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The mortar proportion will be verified with the result of trial mix on site and testing prior to beuse

Mortar will be mixed by mixer which has capacity of 100 liters on site Material of mortar will

be measured in containers with defined volume to maintain control and accuracy of proportion.Mix by placing one-half the water and sand in operating mixer Then add cement and remainder of sand and water Mix batch for not less than 3 minutes after all ingredients are in the mixer

Workability or consistency of mortar on the board shall be sufficiently wet to be worked underthe trowel Water for tempering shall be available on the scaffolding at all time Mortar which has

begun “set” two (2) hours after initial mixing will be discarded

2 Wall ties (Dowel bars):

Dowel bars shall be installed at the spacing of 400mm for each skin of wall (one layer for single wall and 2 layers for Double wall)

Wall ties are made of steel bars of D6, 400mm long (100mm embedded in concrete, 300 mm exposed) The diameter of drilled holes in RC items for installation shall be 8.0mm

Wall ties will be inserted in the columns by drilling and applying of bonding agent (Sikadur 731) The diameter, depth of drilling as well as application of bonding agent will strictly follow theinstruction of manufacturer

With the stiffeners, what will be cast after laying brick wall, the wall ties will be placed in the brick wall during construction Then these wall ties will be embedded in the concrete of

stiffeners

RC Column

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3 Brick wall construction method:

as damp-proof course on the slab

b) Brick wall forming:

Laying brick course by course to build the wall On every course of straight wall as well as at intersection of them, their brick units will be staggered with the previous course to avoid coincidence of vertical joint in brick block

The first course and top course of brick walls shall be of solid bricks

Mortar will be laid to form joints between courses of brick The width of horizontal and vertical joints shall be 10.0 mm wide and joint shall be fully filled with cement mortar and compressed by steel trowel

Horizontal joints shall be level and neatly pointed around as the work proceeds within

tolerance of ±10 mm / 5m Vertical joints shall be plumb and in alignment from top to bottom

of wall within a tolerance of ±5 mm / 3m.

 Single S k in Bri c k Wa l l s The bricks for single skin walls shall be hollow bricks and the wall thickness shall be of 80.0mm thick

 Double Skin Bri c k Wa l l s Bricklaying shall be 1 course of headers to 5 courses of stretchers in order

The gap between skins shall be filled up with mortar before laying the headers.The bricks for double skin brick walls shall be hollow bricks for stretchers and solidbricks for headers, the wall thickness shall be 180.0mm thick with a 20mm gapbetween two skins

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Prior to resuming masonry work, remove loose units and loose mortar, clean exposed surfaces

of set masonry and wet units lightly

c) Application:

Brick will be generally laid in running bond

- Form bed joints of thick layer of mortar slightly furrowed or battered

- Bevel or pyramid the bed mortar

- Form head joints by applying a full coat of mortar on the brick to be laid

- First layer will be solid brick

- Lay closure brick with mortar on each bedding surface of unit to be laid and units in place

- Place brick carefully without colliding to brick previous laid

- Strike flush joints Tool vertical joints first then brush joints to remove all loose and excess mortar

- Repeat this sequence for next course

d) Cleaning, curing and protection:

- Remove immediately concrete scum, mortar and grout stain on the wall during construction

- After the wall is constructed it should not be saturated with water for curing or any other purposes

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- When or where the atmosphere is dry, the masonry wall shall have its surface dampened with

water during a curing period for the mortar of 3 (Three) days.

- Protect completed work:

(a) Keep completed walls clean and protect from staining

(b) Cover top of walls with waterproof covering or membrane to prevent rain or mortar stain

(c) Do not apply uniform loads for at least 12 hours or concentrated loads for at least

72 hours after masonry is constructed

4 RC lintel & siffener

On the wall, there will be some openings to fix the door or window later Dimensions of these openings will be set by adding the dimensions of door (or window) a tolerance of about 2,5

cm for installation

Openings on brick wall will be formed and supported by Reinforced concrete stiffener and lintel around its boundary

Stiffener beams and columns shall also be provided to wall for each 15 m2:

 Where the length of wall is longer than 5.0m (Stiffener columns)

 Where the height of wall is higher than 3.0m (Stiffener beams) Typical section of stiffener (columns and beams) in Factory No.1 building will be:

 For single skin: Dimensions: 8 x 20 (cm), reinforced with main bar of 2D12 and stirrup

TYPICAL STIFFENER SECTION

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