ITP Plastering work

ITP INSPECTION & TESTING PLAN Project: SMC MANUFACTURING VIETNAM FACTORY - PHASE 1 Prepared by Reviewed by Approved by Legend: Quality Control for: PLASTERING WORK Hold Point H Checking

ITP

INSPECTION & TESTING PLAN Project: SMC MANUFACTURING (VIETNAM) FACTORY - PHASE 1 Prepared by Reviewed by Approved by

Legend: Quality Control for: PLASTERING WORK

Hold Point H

Checking & Inspection

Action plan for

SE QA-QC

1 Material Approvals, Shop Drawing Approvals, Method Statement Approval

1.1 Material Approvals,

Inspection Request

+ Sand Size Modulus from 1.5 to 2.0 & meets requirements for gradation with Test reports issued by the 3rd party laboratory

+ Water Clean water source or city water supply source without discoloration of plaster after applying & free from harmful matters

+ Wareproof Admixture

For External wall plaster, SIKA LATEX or equivalent quality, Calcium chloride or any admixture containing chloride shall not

be allowed

+ PVC plaster beads, groove bars K.U.S PVC corber bead in light grey colour or white colour

1.2 Shop Drawing Approvals

Shoft Drawings shall clearly indicate all details of plastering Work with layout of groove lines in plaster, plaster thickness, positions where metal lath mesh, corner beads to be provided,

Spec., Material approvals, MS

1.3 Method Statement Approval

MS approved by KAJIMA and shall clearly show details of work sequence, requirements for plaster application including mortar grade, mixing ratio of cement mortar, thickness of each layer, curing time

Mixing ratio of C/S ( cement/ sand) = 1/4

Spec., Material approvals,Shop Dwg Approval

TCVN 4459-1987 TCVN 9202-2012 TCVN 9377-1 & 2 -2012

2 Acceptance work

2.1 Brick work Completion

Visual check, Acceptance Before

Brick work completed with all stiffener columns, beams, lintels cast, openings done as shop dwgs, all defects repaired &

accepted, 7 day curing period fimished & ready to receive plaster

All bulged concrete of stiffener columns & beams to be chipped off Bad joints or unfilled joints to be repaired & filled 2.2 Concrete Work Completion

Concrete work completed with acceptance & hand over records

All defects including honeycomb, bulged, repaired with acceptance, As-built Survey reports made & submitted

2.3 Waterproofing work Completion Waterproofing work completed & Water leak test carried out &accepted without water leaks

3 Material Delivery to Site

3.2 Water Water from drilled wells or City water Supply source as Kajima'sApproval TCVN 4506-2012

3.3 Sand

Size modulus of sand: 1.5-2.0 as Kajima's requirements for plaster work Delivered sand shall be the same with approved ones without contaminant, clay, mud, organic matters,

TCVN 7570-2006 TCVN 7572-2006

3.4 Waterproofing admixture, Bonding Agent As approved Brand names, Type

As Manufacturer's instructions & Technical Data sheets

3.5 Taking sample for Testing

Cement : 5 Kg per set a7 2 sets for each 40 tons of approved cement delivered

Sand: 40 Kg per set & 2 sets for each 350 m3 of approved sand delivered

Water: 5 litters for every month for water from drilled well

5 litters for each 6 months for water for city water supply source

Testing to be carried out at Test Lab approved by Kajima

Spec., MS, TCVN 2682-2009 TCVN 4787-2009 TCVN 7572-1-2006 TCVN 4506-2012

4 Mock up Work

4.1 Internal wall plaster mock - up

4.2 External wall plaster mock -up

5 Preparation

5.1 Line marking

Mark check lines or recover check lines of Masonry work, 200

mm offset from brick wall lines or concrete columns & wall lines, groove lines

5.2 Level peg installation

Install 40x40 mm brick levvel pegs at interval of 1.80 m in two vertical & horizontal directions Level pegs shall be fix to substrate surface with cement past & cure for 24 hours 5.3 Substrate Surface Treatment

All hardened cement slurry on substrate surface to be removed &

cleaned

All form oil, grease, contaminat on concrete suface to be removed & cleaned

5.4 Applying spaterring dash to concrete

surface for bonding

Apply onto prepared concrete surface by striking cement mortar

of mixing ratio C:S=1:2 & cure for 3 days Thickness of applied dash is 5.0 mm Use brush to remove loose ones after 3 day curing Bonding agent if required to be mixed with cement mortar for dash

5.5 PVC plaster Beads & groove bar fixing

A3-10 PVC corner beads to be fixed by galvanized steel nails at the distance of 500 mm

PVC stop beads as shown on the shop dwgs

As approved MS, groove lines are to be cut after plastering or by groove bar installation before plastering

5.6 Galvanized steel mesh installation

Visual check, Measuring tape

200 mm strip of Galvanized steel mesh is required to install in plaster at junctions between brick walls & concrete elements ( columns, beams, walls)

Plaster of thickness thicker than 20mm, or plastered extends over different substrate materials, where a substrate is chased out to receive electrical conduits or water pipes Place equally over each side of material 100mm width

5.7 Substrate surface wetting Water spraying onto substrate surface to keep damp prior to plaster apllying Stand water on floor is not allowed.

5.8 Door & Window Frame Installation As approved MS, ensure frames of doors & windows stably fixed to wall openings in correct position

5.9 All chased/concealed pipes, cables,

electrical conduit… installed

Visual check, inspection records, hand over records

Ensure all embeded conduits, pipes…of M&E work already installed with inspection records & hand over records 5.10Tools & equipment for plaster work

Visual check, review

Ensure mixers, tools for platering are available at working areas 5.11Materials & Water supply, Power supply Ensure materilas prepared with enough quantities & volume for plastering, stand by power source, water supply source

5.12Access way, protection for floor &

adjacent items

Ensure access way granted and floor protection with plastic sheet

at mortar mixing area & platering area

Provide protection for marked check lines

Checking & Inspection

Action plan for

SE QA-QC

6 Plastering

6.1 Sand sepraration Separate contaminant, organic matter, big size aggreagate, clay from sand for mortar mixing

6.2 Mixing method

• Put 2/3 to 3/4 of the water into the mixer

• Add the Masonry Cement to the batch

• Add the sand into the mixer, adding water as necessary to achieve the desired consistency

• Mix for at least 2 minutes in a mechanical paddle type mixer Add water to achieve desired consistency of mortar, less water for stiff mortar, more water for wet mortar

6.3 Mixed mortar Use clean containers and wheel barrows for contanining mixed mortar or water tight clean mortar bed with brick curb around.

6.4 Mortar mixing & Taking sample

Mixing ratio C/S =1/4 ( 1 bag of cements mixed with 8 buckets of 18L )

Taking samples for each 300m2 wall plaster applied 6.5 Use of mixed mortar

Pot life of mortar of 60 minutes, do not use mortar after mixing 60 minutes

Do not allow add more water to mortar for remixing

6.6 Mortar application for plaster

Visual check, 2m long alu

ruler, 30x60 cm

plastering

+Plaster thickness ≤ 15mm : 01 layer application Use 2m long alu ruler to spread mortar onto substrate surface &

timber floater for pressing to ensure the bonding & density of plaster Surface of plaster shoul be made flat with tmber floater +Plaster thickness > 15mm: 02 layer application

The 1st layer to be applied & cured for at least 3 days before the 2nd layer application During the 1st applied layer still fresh &

levelled, use steel notched trowel to make waving lines at the depth of 3mm for scratching

Wet the 1st layer before the 2nd layer applying

6.7 Extension above the ceiling lines Visual, Measuring

Tape,2m alu

At least 100mm extension from the ceiling lines for ceiling installation

6.8 Construction joint Construction joints shall be cut straightly and postion of C.J at outer wall corner

6.9 Squareness of wall corners

Visual,

Use square to make wall corner to get right angle during trowelling Tolerance for inner wall corner : +/- 2o 6.10Edge straightness Sharp-edged, Straight, tolerance following Table 1 TCVN 303-2006

6.11Water drip groove As per approved dwgs (Ex: soffits of balcony, sunshade,gutters…), tolerance following Table 1 TCVN 303-2006

6.12Slope as required location As per approved dwgs (Ex: window & door sill, top of parapet…),tolerance following Table 1 TCVN 303-2006

6.13Removal of level pegs

Visual check

All level pegs to be removed after surface levelling & patch up with mortar

plastering

7 day curing period required For 2 layer application, the 1st layer to be cured for 3 days before the 2nd layer application

6.15Protection for fresh plaster Protect external wall plaster from rain, sunlight by providing canvas sheets to cover

6 Final Check (after curing)

6.1 Plaster surface

Visual, Tape, Strainght-edge tape, Plumb, Set square

At completion before next works

Even, uniform texture, consistent, no stain and no contamninant by organic matters, homogeneous color

Spec., MS, TCVN 9377 : 2012

Adjustment /

Plaster Inspection Request

6.5 Level of plaster termination +/-5.0 mm per 5.0m long but not exceed 10mm for the

whole length

6.6 Groove lines

Straightness: +/- 2.0mm / 1.0m but not exceed 3.0mm for the whole length

Verticallity: 1.0mm/1m but not exceed 5.0mm for the whole height

Width : +/-1.0 mm Depth : +/- 2.0 mm

6.9 Protection Visual check Protect wall plaster from any harmful impacts

Hold point (H) – Defines a point beyond which work may not proceed without the authorisation of a designated personnel

Witness point (W) – Provides the nominated party with the opportunity to witness the inspection or test or aspect of the work, at their discretion.

Surveillance (S) – Monitoring of any stage of the work in progress

Document Review (R )- Reivew the submitted documents