CD 01 MOS earth work structure work rev 0

THE SUNCASA PROJECT MS001-Earthwork & structure work THE SUNCASA PROJECT LT ASSOCIATION METHOD OF STATEMENT FOR EARTHWORK AND STRUCTURE WORK REV 00 – 26 DEC 2017... THE SUNCASA PROJEC

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THE SUNCASA PROJECT MS001-Earthwork & structure work

THE SUNCASA PROJECT

LT ASSOCIATION

METHOD OF STATEMENT FOR EARTHWORK AND STRUCTURE WORK

REV 00 – 26 DEC 2017

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TABLE OF CONTENTS

1 General

1.2 Specification/Standard Reference

2 Material Supply, Storing and Handling

2.1 Rebar 2.2 Concrete 2.3 Water bar 2.4 Sikadur 731 / Hilti RE500

3 Work Procedure and its Quality Control Management

3.1 Procedural Flowchart 3.2 Quality control

4 Form work Rebar Insatllation and concreting

4.1 Form work 4.2 Rebar 4.3 Concreting

5 Risk Assessment (Safety, Environment Control)

4.1 Safety Control 4.2 Environmental Control Attachments

Attachment 1 : Excavation sequence Attachment 2 : Formwork for column , beam , slab Attachment 3 : Reinforcement detail shop drawing Attachment 4 : Concreting

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1 GENERAL

This method statement will cover for all task including earth work , rebar , formwork, concrete structure of clubhouse

Specification

Drawing S_CG_FPPL_001;S_CH_FPPS_001;S_CH_PCDT_001;S_CH_PPL1_01; S_CH_PPL2_01;CH&CP.KT.06-23

Standard : TCVN 4453-2016;BS8110

Material will be obtained from below sources which meet requirement of specification

1 Concrete grade 100Mpa ,250 Mpa Nam Hoang Ngan

;LDC

MANAGEMENT

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Fabrication rebar

Rebar installation pilecap , groundbeam,

ground slab, column rebar

Drawing / MOS approval

Preparation Work ( Equipment , material deliver

to site )

Taking over gridline /axis

Setting out of clubhouse parameter

and pile cap position

1 Excavate soil

2 Lean concrete ground beam

3 Making form work of pilecap , groundbeam by brick

4 Lean concrete ground slab

Concreting groundslab , pilecap,

groundbeam

Form work , scaffolding , rebar , concrete 1st floor

Form work , rebar , concrete column 1st floor

Rebar ,Form work , concrete column roof floor

Form work , scaffolding , rebar , concrete roof floor

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3.2 Quality control

3.2.1 Material Inspection

 Rebar delivery will check tag & deliver docket/ CO against approved rebar source Hoa Phat / Pomina catalogue

 Concrete : Concrete deliver will check slum & taking sample or compressive strength testing

Based on the type of concrete structure type, the suitable concrete class will be supplied as follows:

Cube Strength Test (MPa)

Slump (mm)

M250 Column , slab , beam ,

Sampling for determination of concrete strength shall be done based on the following

frequencies

 For continuous pours: 20 m³ < batches volume <100 m³, 3 random samples shall be

taken from which not less than six (6) specimens shall be tested 28 days

4 EARTH WORK

4.1 Equipment

Excavator 0.5-1m3 & dump truck 2m3 to excavate and deliver soil to indicated area

Plate compactor ,Jumping jack compactor together worker for compaction , leveling bottom of geound beam & ground surface

4.2 Excavation & leveling sequence

Excavtion work sequence : Pile cap ground beam Ground floor

The excavator dig the soil then pouring directly to dump truck for moving out side to stock area Worker use compactor to compact & leveling surface

See attachement 1 for logistic plan of excavation sequence

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CONCRETING

5.1 Form work

Form work for pile cap & ground beam will be made by brick

Form work for column & slab will be made by plywood / Shape steel and be fixed into vertical / horizontal segment with horizontal stud steel shape 50x50x1.8mm , vertical wale steel

shape 40x80/50x100x1.8 mm and tie rod d16 for beam

A support system by tube steel at bottom of the slab

5.1.1 Technical requirement of formwork

Scaffolding & formwork was set up to ensure strength , stabling, easy to assembly & remove and not obstruct during placing concrete

Formwork must be tight , not allow cement water coming out when casting & compaction and protect during setting out time of structure

Form work of slab /beam to be formed prior to install rebar

5.1.2 Installation

5.1.2.1 Column

Surveyor setting out the coulum boundary Note the steel in place of waiting on the floor to make room for the formwork anchor and fulcrum for bracing

Fabricating each part of column

Asemblly all parts of column

Use steel shackle, the shackle around 1.5m distance

* Assemble method :

-Setting out column section on floor

Erect turn the inside wall and then to the outer array and then use steel shackle link together and wedge 4 tightly array

- Fixed formwork system Turnbuckle column by column against the right column to adjust the heart, straight and solid

- Use a total station, to conduct hydro average check of the vertical columns

5.1.2.2 Beams

Includes 2 1 formwork and shuttering the bottom

Erection of the following ways:

- Identify centerline beams

-Set foot columns lining

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- Place the tree against T, put 2 plants against damage columns, fixed 2 poles, add some columns along the center beam

- Laying on the plywood floor beams supporting beams anti-T column, beginning with the fixed 2

bracing

- Put the beam formwork panels, nailing associated with the bottom beam, fixed on the edges with a shackle, tree against skewers, bolts

- Check center lne beams, beam bottom height adjustment for the designs

5.1.2.3 Floors

- Use a shaped steel formwork scaffolding system placed on the A-bearing steel support beams of wood and floor systems and steel purlins, maximum use of steel formwork area shape, with construction area of remaining difficult wood formwork used in combination

- The perimeter of the floor with plywood boards fringing associated fringing leech nails into formwork girders and beams supporting formwork girders

Please see detail in formwork shop drawing for column , beam , slab :Attachment 2

5.2 Reinforcement

All rebar must be free form dust , oil or other harmful chemical

Reinforcement was fabricated using 3 phase cutter & bending machine at workshop & deliver to working area

There are 4 types of dia for rebar :

-D16 for beam

-D8 for link of column & ground slab

-D10 for link rebar of beam & 1stslab, roof slab

-D12 for pile cap & column CW2

-D20 for beam

-D25 for beam & Column CW1

Detail reinforcement shop drawing please see : Attachment 3

5.3 Concreting

Equipment :

Electric Hand vibrator using direct to concrete when casting , worker use hammer to knock the outside of column formwork

Concreting : Concrete placing by crane pump and leveling , vibrating & making smooth

surface by worker with vibrator

Casting sequence , Please see : Attachment 4

Remove formwork :

Form work removal after one day casting when concrete obtain 25kg/cm2 for column

and 7 days for slab ( use R7 concrete )

Curing:

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Specimens:

Initial curing - Immediately after molding and finishing, the specimen shall be stored for a period of 48 hours in a shaded area or away from direct sunlight

Final Curing - Upon completion of initial curing and within 30 min after removing the molds, cure specimens with free water maintained on their surfaces or using water storage tanks (Storage water tank will be proposed on different method statements)

Slab & wall curing :

By spray water on the surface of structure right after casting 8hrs & 3 continuous days after remove form work

Testing :

During transportation, protect specimens with suitable cushioning material such as cloth, foam, paper, etc to prevent damaged Prevent moisture loss during transportation by wrapping the specimens with plastic or wet burlap

Concrete specimens will be tested at 28 days passing from the date of casting All specimens testing shall be conducted by approved testing laboratory

We shall follow our Occupational, Health, Safety, and Rehabilitation Plan and Project Safety Plan

General lighting with an intensity of 100 Lux will be provided around the work areas during the night if the work will be carried out at night time

All mixer trucks will be equipped with flashing lights and audible reversing alarms

Personal Protective equipment att all times

 Safety Helmet

 Safety Footwear

5.2 Environmental Control

We shall follow our approved Environment Management System

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