Biện pháp cán láng nền nhà

Biện pháp cán nền dự án Riviera Point - Nhà thầu thi công Ssang Yong Hàn Quốc

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Rivera Point Condominium Development

-DESIGN AND BUILD OF MAIN TENDER (PHASE 1A)

FOR PROPOSED CONDOMINIUM DEVELOPMENT AT DISTRICT 7,

HO CHI MINH, VIETNAM FOR M/S RIVIERA POINT LIMITED LIABILITY COMPANY

Project : Rivera Point Condominium Development

Produced by : Ssangyong E&C

Assessment Duration : 7days

Document No : Refer to the submital list

Riviera Point Project

METHOD STATEMENT

FOR SCREEDING WORK

Dept

Prepared by

Rev Date Description

Approved (by) Ssangyong ICIC KLV Safety RPLLC

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Project: Riviera Point Project

Document No: RP_MOS -SW _SSY_ 01

The RA process is complied as the process chart and the person in charge has been indicated each team leader because the position of the personnel is quite changeable yet

RPLLC

Please update JSA according to the RA updated specifically

RPLLC

PPE for this scope of work is not consistency between Resources (page 6) & safety plan (page 21&22), please provide specific PPE relevant with work sequence

It has been specified as you pointed out

Page 11/88:

 Please quote where our specification allows compressive strength of mortar is minimum 7.5 N/mm2 as strength of mixture 1:4 (cement : sand) is higher than?

 This page indicated mixing ratio of cement and sand was 1:4, but page 17/88 was 1:3 so which one is correct?

 The compressive strength of mortar is minimum 7.5 N/mm2 as strength of mixture 1:4 (cement : sand) follow the contract specification

 Mixing ratio of cement and sand was 1:4 is correct

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Project: Riviera Point Project

Document No: RP_MOS -SW _SSY_ 01

10 Tan,ICIC Page 17/88: please clarify why you use dry mortar for

Page 20/88: tolerance of screeding level 10mm may not be accepted as it will cause a different level of tiling work and other trade.

Tolerance of screeding level for tiling work shall be:

 +/- 5mm under a 3m straight edge

Please indicate how frequency of strength test for screeding

Reviewer’s suggested status code for this revision only:

ICIC Consultant Review Consultant TYLIN Structural JRP MEP Review Consultant Consultant KPK Cost Other (state) Other (state) Other (state) RPLLC

This section is to record the reviewing party’s suggested status code only: the official status code for the submitted item is recorded on the first sheet of this document

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6 Plant & Machinery

7 Communication : Call-up List

8 Power

9 Lighting

10 Access and Egress

11 Emergency Preparedness

12 Risk and Control

APPENDICES 1~6 (please refer to the next page)

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APPENDICES

Appendix 1 ……….… Risk Assessment & Job Safety Analysis

Appendix 2 ………… ………Organization Chart

Appendix 3 ……… Drawings

Appendix 4 ……… ……… Material safety data sheet

Appendix 5 …….…… ……… First Aid Plan

Appendix 6 …….……… Material Specification

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1 Introduction

This method statement relates to the Screeding work

The project site is located in District 7, HCMC of Vietnam

We recognize that safety, health and environment (SHE) are primary premise in all decisions, being made for successful construction and shall comply with the relavant local authorities of Ho Chi Minh City, Socialist Republic of Vietnam

We will develop the construction method with the focus to avoid any harm to the health and safety of owner’s personnel, contractor employees and the public and also to minimize adverse effect to the natural and around environment

All necessary specifications, inspection and quality control will be complied with the contract documents, specification

If there is any discrepancy in the descriptions below, it will be designated by RPLLC

2 Definition & Abbreviation

The abbreviations are used for this method statement, as shown below :

1) Project Definition

- Project: Condominium housing development Riviera point (Phase 1A)

- Main-Contractor: Ssangyong Engineering & Construction Co.Ltd

2) Project Abbreviation

- SSY: Ssangyong engineering & Construction Co.Ltd

- RPLLC: Riviera Point Limited Liability Company, KPLC: Keppel Land Construction

- PM: Project Manager, CM: Construction Manager, SM: Site Manager

- PD: Project Director, PJC: Project company, KPLS: Keppel Land Safety team

- SHE: Safety Health Environment, RFT: Raft, SAC: Safety Awareness Center

- QA: Quality Assurance, QC: Quality Control, QS: Quality Surveyor

- DWG: Drawing, BSMT: Basement, FDN: Foundation, BLK: Block,

- NT : Ngũ Thường Ltd Co.,

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[ Site Location of Riviera Point Project ]

3 Scope of work

The main scope of work is Screeding work

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4 Resources (Materials, Equipments & Human Resources)

4.1 Resources for plastering work

4.2 Resources for Equiment

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4.3 Plan of Vertical supplying material by Hoist

Hoist will be reach 4 levels below from the level that is in progress of RC Work

Hoist

Material

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4.4 Equipment Location & Lifting Loading Chart

4.5 Losistics Plan for Item

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5 Sequence of work

5.1 Human Resources – Deployment of Manpower

0989 798928 Subcontractor Project Manager

0973086992 Subcontractor Site Manager

※ For site Organization Chart, please kindly refer to Annex 2

1) Screeding work Workforce Configuration (Engineer : 1 shift)

 Team 1 : 1 Foreman, 10 Workers

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5.2 Working Flow Chart

5.2.1 Summary Procedure of screeding works

INSPECTION

COMPLETION

GET H/O FLOOR

MATERIAL ARRANGEMENT

SURVEYING

INSTALL LEVEL PEGS

INSPECTION

MORTAR SCREEDING

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Cement

Approved Brand ( FICO orequivalent – TCVN

VIETNAM) One bag of Cement 50kg or 0.036m3 mixes with 0.17 m3 of Sand

Sand

Rough sand shall be clean, natural, uncrushed or partially crushed sand of a light color, free from organic matter, suitable for use in plastering and approved by the Legal ThirdParty

Water Shall be clean

Strength Composition Cement / Dry Sand ratio = 1 /4

5.6 Bonding Agent

 Type Sika Latex

 Supplier The Hung Sika Co., LTD

 Refer to Catalogue attached

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5.7 Material handling, storage and delivery

 Transportation of materials shall be by lorry or trailer and unloading by mobile crane, tower crane, pallet truck and/or by manual as appropriate which ever

as safer

 Store materials at designated location and adequately protected

 Cement bags delivered should be stored at enclosed storage with 100 mm above ground level and covered by plastic protection in order to prevent water

 The bagged cement shall be stored in piles not more than 8 bags high

 Prevent flood or be moisted by providing perimeter surface drainage if

necessary

 Boarded platform at least 75 mm off the ground and undercover are

recommended to protect bricks from muddy water, contact from soil and construction debris

 Materials shall be bring upto working floor by hoist

 The stages shall be installed out side of the building to receive the materials

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5.8 Mixing Yard Preparation

 Mixing yards location showing in the temporary facility plan & layout

 The mixing yard shall made following adjacent sketch, no have temporary waterproofing, but shall have wooden plate and mortar backing, curb around mixing yard by brick wall 100mm height, 120mm width and render both side shall be provided

 Water tap points inside of building must be considered and coordinate with M&E section to install water supply pipe and drain system

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 Concrete slab surfaces shall be thoroughly cleaned, free of dust,

efflorescence, and any other deleterious substance prior to commencement

of screeding

 Checking mixing yard including temporary power, water supply, materials, etc

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6 Working method

6.1 Preparation / Use of Mortar

 Substrate shall be swept by broom before pouring mortar

 Mortar shall be carefully mixed and prepared in small quantities as required

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 Cement and sand shall be properly mixed in mixer or concrete batching plant until attaining uniform color, and the correct amount of water shall be added to achieve workability

 Minimum mixing period of 1 to 2 minutes after water is added - shall be checked by SSY QA/QC in timely manner for each mixing place

 Mixed mortar shall be used within 60 minutes; Mixed mortar if not used within 60 minutes shall be discarded as “Reject” - shall be checked by SSY QA/QC

 Mixed mortar is transported by wheelbarrows or other appropriate method

 The size of gauge box or plastic tank (0.018m3), i.e 01 bag of cement (50kg or 0.036m3) mixed with 9 gauge box (0.162m3) of sand

 Re-tempering will not be permitted; render that has begun to stiffen shall be discarded

 Carry out installation of leveling peg by level machine

 The distance of nearest leveling peg shall be approximately 2000mm, to floor to determine the required thickness for finishing and finishing level

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6.4 Application of Render to Floors and Roofs

 Render shall be generally applied in one (1) coat

 Render shall be laid in bays not exceeding 15 m2 in area with approved types of control joints provided around edges of bays

 The surface shall be leveled with a wooden float and finished with a steel

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trowel

 Steel trowel the mortar surface to the required smooth finish for carpet, vinyl tiles, rubber tiles, damp-proof paint, waterproofing, cement render finish, and rough finishing for receving tiles, stone or marble etc

 Joints in render shall be same location with joints in the concrete base

 Surfaces shall be accurately laid to falls and cross falls as appropriate to facilitate efficient draining of water from the finished surface

 Triangular section fillets shall be formed at all junctions of roof render with walls, parapets etc and to sides of gutters

 At junctions of different backgrounds (e.g masonry to concrete) render shall

be reinforced with strip of expanded metal lath 250 mm wide

 Clean up and remove such material at completion of each day of operation

 Incase mater or heavy equipments during curing stage, 12 mm thick

plywood shall be provided to protect the screeding during curing stage Cooperate with other trades for protection of special finishes

6.5 Completion Requirement

 Exposed surfaces shall be clean and free from dust, dirt scratches, gauges,

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cracks, stains, discoloration or other defects or damages

 Surfaces shall be finished smooth and flat

6.6 Curing

 Moist conditions shall be maintained, using fine fog spray or vapor barrier covering; provided and maintained as necessary for proper hydration of cement and to prevent excessively rapid drying out of freshly placed surfaces

 Floor screed shall be cured wet condition for a minimum of three (3) days after application

 Incase material or heavy equipments must be loaded, 12 mm thick plywood shall be provided to protect the screeding during curing stage

6.7 Defective recovering works

6.7.1 Check for Defective Works

 Hollowness of the floor screeding can be checked using a metal round ball

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rod

 The metal round ball will be used to slide and make a light tap against the wall to check

5.7.2 Remedial Action for Debonding Plaster Area

 The new screeding shall be of the same materials and executed in the same manner as specified for the original work

 The finished surface of the new plastering shall be flushed with the face of the surrounding work

 Any unevenness in the finished surface shall be rubbed down to a true face

6.8 Quality control plan

Refer the Contract Specification, TCXDVN 303-2004, TCXDVN 303-2006 (QUALITY CONTROL / TOLERANCES / TESTING)

 Level of floor screeds: Permissible deviation in level of surface of screeds from datum: +/- 10mm

 Flatness of floor screeds: Sudden irregularities shall not be permitted The variation in gap under a straightedge placed any where on the surface be not more than ( to receive sheet or tile finished):

 +/- 5mm under a 3m straight edge

 Flatness of floor screeds: Sudden irregularities shall not be permitted The variation in gap under a straightedge placed any where on the surface be not more than ( to receive paint finish or plaster finished):

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DESIGN AND BUILD OF MAIN TENDER (PHASE 1A)

FOR PROPOSED CONDOMINIUM DEVELOPMENT (RIVIERA POINT)

AT DISTRICT 7, HO CHI MINH, VIETNAM

FOR M/S RIVIERA POINT LIMITED LIABILITY COMPANY

Project : Riviera Point Condominum Development

7 Communication

7.1 Organization chart for Brick work

※ Expanded general organization chart is shown at Annex 2

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7.2 Organization chart for Electrical emergency network

Notice.:

 If EVN company disconnects power, generator will operate in worksite Because there is Automatic Transfer Switch inside

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7.3 Configuration for Safety manager

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8 Power

8.1 Temporary Power Supplying Plan

 In case of the electrical blacked out then It will automatically supplying the

temporary power from the generator, Its specification is shown as below

In the event of and electrical Black out of

stand by generator will supply power

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8.2 Power Supplying Circuit & Lighting Circuit

Portable Distributor

Distributor

Main Distribut

or

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8.3 Power Supplying Circuit & Lighting Circuit

 No Distributor floor will be provided by extention line with socket

Portable Lighting

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9.2 Additional Lighting and Temporary Distributor

 We will prepare the additional lighting for inside working space while working in night

TDBX : Temporary Distribution Board at Floor

Working Area Working Area

Electric cable

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10 Access & Egress

10.1 Site access & egress

 Shall be provided at all times safe access to and egress from every block in the worksite in the course of work activities by means of entrance, stairways or scaffold ladder which shall be so protected as to safeguard the persons using them falling material

 Entrance or exit to the site shall only via the main entrance gates

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 All persons and vehicles entering or leaving the site are subject to search

 Suppliers are only permitted onto site, on presentation of a valid delivery note

 Such suppliers shall only remain on site for the orderly execution of their delivery

10.2 Site access & egress

 All personnel entering or leaving the workplace shall be subjected to security checks by SSYENC Security personnel on their entry and departure.

 All personnel entering the worksite shall register their particulars with our Security

by RFID

10.3 Hoist using access & egress

 Materials and work forces are accessing by Hoist

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10.4 Main Gate Entering control by RFID systm

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10.5 Speed Limit & Traffic Rules

 Maximum speed inside the project site for all motor vehicles and equipment shall

be 5 km/hour

 All vehicles shall keep to the right

 Local road traffic regulations shall be applied within the site area

10.6 Traffic / Re-routing schedule

 It is the responsibility of the project to co-ordinate with government agencies to have clearance as to re-routing, closing of streets, etc

 Traffic signs must be posted strategically as per approval by us

 Traffic circulation Details are shown as below

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11 Emergency preparedness

11.1 Emergency action when accident

 Means of emergency rescuemust be readily available to the confined spaceentry attendant for emergency extrication ofentrants

11.2. Site Supervision staffs

Inspection of the site, grasp the history of the occurrence, collect site information and evidences as well as photo records, preparation of sketches of the accident, supervision

The nearest hospital:1 km, 5 minutes away from site

Name:“BENH VIEN QUAN 7”Address:101 Nguyen ThiThap street, Tan Phu ward, distric 7, HCM city

Each Subcon’s Site Manager

0907 99

22 65

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12 Risk and control

12.1 Electric safety management

 Only qualified electricians will be authorized to do repair of defective electrical installation

 Adequate safety measures and approval from Electrical Superintendent must be secured prior to energizing any circuit

 Wear proper hand protection in dealing with high voltage lines and electrical equipment

 Electrical cord must be kept clear from walkways and other locations that may be

 exposed to damage or is tripping hazard

 Energized wiring in junction boxes, circuit breakers and the likes must be covered

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12.2 Water supplying system

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12.3 Storage & stacking management

All tool and equipment and other supplies, needed for construction work must be placed in a Storeroom for proper storage and safekeeping

12.4 Fuel / flammable materials management

 All fuel and flammable, needed for construction work must be placed in a Storeroom for proper storage and safekeeping

Fuel’s material safety data sheet is shown at place to contain materials for everybody can understand & follow accordingly

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12.6 Power tools management

 Wear safety goggles or face shield when necessary

 Only inspected and approved cords shall be used for operating purposes

 The usage of IP65 for electrical socket required

 All portable electrical tools shall be grounded

 Only inspected and approved pneumatic hoses shall be used in any operation that requires compressed air

 Never link air hoses to stop airflow

 When not in use, switch off power tools and lay down in a safe position to avoid accidental switch-on that may lead to accidents

 Grinders and other power tools must have adequate guards to protect users

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12.7 Fire management system

 It is the foremost objective to protect human life and properties

 Therefore, all fire hazard elements must be considered to eliminate or minimize loss of property and lives

 To this end the following measures are to be implemented:

 All fire fighting & protection shall be in compliance with the local Fire Police regulations

 Firefighting equipment and procedures are subject to audit by local Fire Police

 It is the Site Manager's responsibility to ensure that every employee under his supervision is well oriented in fire prevention practice

 All employees must know the proper usage of fire extinguishers

 Adequate number of fire extinguishers shall be distributed in the general work areas, to be used in case of emergency

 Fire extinguishers shall be periodically checked, to ensure their proper functioning

 Special attention shall be given in dealing with flammable and combustible materials, as follows:

1) Only the minimum amount of flammable material shall be kept at working places 2) Flammable material shall not be kept or stored in locations where it is difficult to see, or below open staging or floors

3) Flammable materials shall dispose of, immediately after they are no longer equired

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