ACSC ITP INSPECTION & TESTING PLAN Project: Legend: Quality Control for: No Point to be checked SMC MANUFACTURING (VIETNAM) FACTORY - PHASE PLASTERING WORK How to measure How often Quality Requirements Prepared by References Reviewed by Action plan for Defective Work Approved by Hold Point H Witness W Surveillance S Document Revie R Checking & Inspection Record SC KOA VN SE QA-QC H S Material Approvals, Shop Drawing Approvals, Method Statement Approval 1.1 Material Approvals, + Sand Size Modulus from 1.5 to 2.0 & meets requirements for gradation with Test reports issued by the 3rd party laboratory + Cement Cement Brand name NGHISON, HOLCIM, FICO -PC40 + 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 + Metal lath mesh 1.0 mm diameter galvanized metal lath mesh of size 12x12 mm + Bonding agent As Kajima's approval + PVC plaster beads, groove bars K.U.S PVC corber bead in light grey colour or white colour H 1.2 Shop Drawing Approvals Shoft Drawings shall clearly indicate all details of plastering Work Spec., Material approvals, with layout of groove lines in plaster, plaster thickness, positions MS where metal lath mesh, corner beads to be provided, 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 2.1 Acceptance work 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, 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 Spec., Material approvals,Shop Dwg Approval TCVN 4459-1987 TCVN 9202-2012 TCVN 9377-1 & -2012 Material Delivery to Site 3.1 Cement As approved Brand names, Type TCVN 324-2004 TCVN 6260-2009 3.2 Water Water from drilled wells or City water Supply source as Kajima's Approval 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 : Kg per set a7 sets for each 40 tons of approved cement delivered Sand: 40 Kg per set & sets for each 350 m3 of approved sand delivered Water: litters for every month for water from drilled well litters for each 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 Mock up Work 4.1 Internal wall plaster mock - up 4.2 External wall plaster mock -up Preparation Mark check lines or recover check lines of Masonry work, 200 mm offset from brick wall lines or concrete columns & wall lines, groove lines 5.1 Line marking 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 All hardened cement slurry on substrate surface to be removed & cleaned All form oil, grease, contaminat on concrete suface to be removed & cleaned 5.2 Level peg installation 5.3 Substrate Surface Treatment 5.4 Apply onto prepared concrete surface by striking cement mortar of mixing ratio C:S=1:2 & cure for days Thickness of applied dash is 5.0 mm Use brush to remove loose ones after day curing Bonding agent if required to be mixed with cement mortar for dash Applying spaterring dash to concrete surface for bonding 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 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 Visual check, Measuring tape 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 5.10 Tools & equipment for plaster work 5.11 Materials & Water supply, Power supply 5.12 Access way, protection for floor & adjacent items Ensure all embeded conduits, pipes…of M&E work already installed with inspection records & hand over records Ensure mixers, tools for platering are available at working areas Visual check, review Ensure materilas prepared with enough quantities & volume for plastering, stand by power source, water supply source Ensure access way granted and floor protection with plastic sheet at mortar mixing area & platering area Provide protection for marked check lines R R Preparation work Inspection Request No Point to be checked How to measure How often Quality Requirements References SC KOA VN SE QA-QC H S Separate contaminant, organic matter, big size aggreagate, clay from sand for mortar mixing • 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 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 6.2 Mixing method 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 ( bag of cements mixed with buckets of 18L ) Taking samples for each 300m2 wall plaster applied 6.5 Use of mixed mortar 6.6 Mortar application for plaster 6.7 Extension above the ceiling lines Visual check, 2m long alu ruler, 30x60 cm square During plastering Pot life of mortar of 60 minutes, not use mortar after mixing 60 minutes Do not allow add more water to mortar for remixing +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 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 At least 100mm extension from the ceiling lines for ceiling installation Visual, Measuring Tape,2m alu Construction joints shall be cut straightly and postion of C.J at outer wall corner 6.8 Construction joint Use square to make wall corner to get right angle during 6.9 Squareness of wall corners o trowelling Tolerance for inner wall corner : +/- Visual, 6.10 Edge straightness Sharp-edged, Straight, tolerance following Table TCVN 3032006 6.11 Water drip groove As per approved dwgs (Ex: soffits of balcony, sunshade, gutters…), tolerance following Table TCVN 303-2006 6.12 Slope as required location As per approved dwgs (Ex: window & door sill, top of parapet…), tolerance following Table TCVN 303-2006 6.13 Removal of level pegs 6.14 Curing time Visual check After plastering 6.15 Protection for fresh plaster All level pegs to be removed after surface levelling & patch up with mortar day curing period required For layer application, the 1st layer to be cured for days before the 2nd layer application Protect external wall plaster from rain, sunlight by providing canvas sheets to cover Final Check (after curing) 6.2 Thickness Even, uniform texture, consistent, no stain and no contamninant by organic matters, homogeneous color Tolerance: +/- 1.0 mm 6.3 Flatness Straigthegde check with 3m long alu ruler : 2.0mm/3m 6.4 Verticality 6.5 Level of plaster termination 6.1 Checking & Inspection Record Plastering 6.1 Sand sepraration Action plan for Defective Work Plaster surface 6.6 Groove lines 6.7 Hollowness +/-5.0mm /3.0 m high Visual, Tape, Strainght-edge tape, Plumb, Set square +/-5.0 mm per 5.0m long but not exceed 10mm for the At completion whole length Spec., MS, Straightness: +/- 2.0mm / 1.0m but not exceed 3.0mm for before next TCVN 9377 : 2012 the whole length works Verticallity: 1.0mm/1m but not exceed 5.0mm for the whole height Width : +/-1.0 mm Depth : +/- 2.0 mm Check with round metal ball rod for hollowness 6.8 Defects 6.9 Protection No defect, no crack lines 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 Adjustment / Repair, redo KV/FORM/PJT/84/PLW/02 H R R Plaster Inspection Request