Method Statement of Brickwork

CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation METHOD STATEMENT SMC Manufacturing (Vietnam) Factory-phase 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 SMC-Factory No.1/MS-Brickwork Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation Revision History Revision 01 02 Date of issue 07/12/2015 12/12/2015 Purpose of issue (approved/ revision) For Approval Revised ITP & Checklist Submitted by ACSC Prepared by Reviewed by Approved by Name Lê Long Hậu Nguyễn Hoàng Trinh Nguyễn Văn Trung Position Site Engineer Site Manager Project Manager Date Signature Approved by KOA Checked by QA-QC QA-QC HSE KDA Position Date Signature Reviewed by Approved by Approved by Client Name Prepared by Reviewed by SMC-Factory No.1/MS-Brickwork Position Page Date Signature CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation Contents INTRODUCTION 1.1 PURPOSE This method statement describes the methodology for brick wall and plastering on brick walls of Factory No.1 Brickwork will be carried out after all constructions of relevant concrete structures such as slab, columns completed The concrete work constructions were covered by the other submittals, therefore they will no longer be discussed in this method statement Most of brickwork are for walls of Utilities Building and will be applied from the ground to 1st floor of building All walls will close the spaces between concrete structures of column to column and slab to slab, 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 these openings, reinforcement concrete stiffener and lintel beams will be cast before to carry out the brick walls 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 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 PROJECT Construction Reinforcement Concrete Structure works included: a Pile head treatment b Earth work SMC-Factory No.1/MS-Brickwork Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation c Formwork d Reinforcement Steel Rebar work e Concrete work Finishing works included: a Brick work b Plaster work c Painting work d Tiling work (Wall & Floor) BUILDING DESCRIPTION: Location: Factory No.1 are located at the corner of Road No.D5 &N2-5 in Long Duc Industrial park as below Factory No Description: - Building purpose : Factory Foundation : Spun piles (D300, 350, 400 mm) Structure : RC structures + steel rafter; Slab on grade Dimensions: o Factory  140m long (14x10m); 60 (4x15m) - 69m wide  Ground Floor (FL 0.00m); 1st Floor (FL +7.25m) SMC-Factory No.1/MS-Brickwork Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation o  Height : 11.40m Utilities area: x (120m long, 4.5m wide) GROUND FLOOR PLAN - Floor load: o Factory Ground Floor o WC Ground Floor o Stair case o Storage/Utilities - Slab thickness: o Factory Ground floor slab : 300 mm thk o Storage/Utilities Ground Floor slab : 150 mm thk o 1st Floor slab : 140 mm thk - Area: o o : 40 KN/m2 : KN/m2 : KN/m2 : 10 KN/m2 Ground floor + Factory area + Storage/Utilities area 1st Floor SMC-Factory No.1/MS-Brickwork : 9561 m2 : 8400 m2 : 1161 m2 : 9561 m2 Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation GUTTER CORRIDOR ZINC ROOF SHEET DOWN SPOUT C OR R ID O R ZIN C R OO F SH EET T R.BEAM GFL+13.650 / 20 T O.BEAM GFL+11.900 750 1/ 20 CANOPY; STEEL BEAM F AC TO R Y -02 1FL GFL+7.250 3650 C ON N E C T ION C OR R ID OR 650 STEEL KICKER GFL GFL±0 800 4800 250 500 1600 LOADING BAY GUARD POST ( 100?, H=1500) 500 5000 5000 5000 0000 SMC-Factory No.1/MS-Brickwork Page 5000 500 2000 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation TYPICAL CROSS SECTION SMC-Factory No.1/MS-Brickwork Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation ORGANIZATION CHART 3.1 Organization Chart (Factory No.1) Project Manager NGUYỄN VĂN TRUNG (MP: 090 330 7742) nguyenvantrung@acsc.com.vn Site Manager NGUYỄN HOÀNG TRINH (MP: 090 2911235) nghoangtrinh@acsc.com.vn Deputy Site Manager Deputy Site Manager NGUYỄN TRÍ KHOA (MP: 0937 229 680) LÊ LONG HẬU (MP: 093 734 3055) ngtrikhoa@acsc.com.vn haull@acsc.com.vn Site Engineers QA&QC Nguyễn Minh Tuấn (MP: 098 314 5069) Phan Quốc Trường (MP: 0906 027 797) quoctruong@acsc.com.vn Nguyễn Văn Hào (MP: 0938.722.730) Shop Drawings Safety Supervisors Hoàng Văn Hải (MP:908 818 1059) Đỗ Vũ Quyền Anh (MP:090 853 1908) Construction teams Phương Phương Việt Company SMC-Factory No.1/MS-Brickwork Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 3.2 Assignment Position Deputy Site manager Site Engineer QA&QC Engineer Safety Supervision Factory No.1 NGUYỄN TRÍ KHOA Factory No.9 TRẦN AN TOÀN NGUYỄN MINH TUẤN NGUYỄN VĂN HÀO PHAN QUỐC TRƯỜNG ĐỖ VŨ QUYỀN ANH LÊ VĂN TUẤT BÙI CÔNG HUYNH BÙI THANH HẢI PHẠM VĂN MẠNH SCHEDULE Construction Schedule of Brick work and Plaster work is attached in Appendix-1 SPECIFIC STANDARD Brick work and plastering works shall be carried out in accordance with the requirements of: - SMC MANUFACTURING (VIET NAM) FACTORY-PHASE PROJECT Specification for Concrete works Current Vietnamese Construction Standards 10 11 12 13 TCVN 7572 & 7570 TCXD 127: TCVN 2682:2009 TCVN 5438: TCVN 9202: TCVN 6260: 2009 TCVN 4506:2013 TCVN 5992: 1995 TCVN 6492: 1999 TCVN 2671: 1978 TCVN 4560: 1988 TCVN 3118: 993 TCVN 9115: 2012 14 TCVN 1450: 2009 15 TCVN 1451: 1998 16 TCVN 6477: 2011 Test method & Acceptance for Coarse & Fine Aggregates 1985 Fine sand for concrete and mortar, use of fine sand Specification for Portland Cement Cements – Terminology and Definitions 2012 Cement for brick work and plastering work- Masonry Cement Portland Cement Mixtures – Technical Requirements Water used for mixing concrete & cement mortar Sampling water for testing Determination of pH of water Determination of organic contaminants in water Determination of total dissolved salt content in water Method for determination of concrete strength Assembled concrete and reinforced concrete structures Practice for erection -and acceptance Hollow burnt clay bricks Solid burnt clay solid bricks 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 20 TCVN 3121-2:2003 Mortar for masonry - Test methods Part 1: Determination of maximum of aggregate Mortar for particle masonrysize - Test methods Part 2: Sampling and 21 TCVN 4314: 2003 preparation of sample Mortar for masonry – Specifications 22 TCVN 6355-2:2009 Bricks – Test Methods Part 2: Determination of compressive strength – Part 3: Determination of bending Bricks – Test Methods 23 TCVN 6355-3:2009 25 TCVN 4085:2011 strength Bricks – Test Methods – Part 4: Determination of water absorption Masonry structures - Code for construction and acceptance 26 TCVN 4459:1987 Cement mortar mixing and use of cement mortar 24 TCVN 6355-4:2009 SMC-Factory No.1/MS-Brickwork Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation SCOPE OF WORKS: The brick walls of Factory No.1 include the perimeter walls of factory and the inside/outside walls of Utilities area on Ground and 1st floors 4500 E1 C E F 15000 F F 60000 15000 D F 15000 C 15000 B 4500 A F C F C F F F F F A1 3000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 4000 140000 1A 10 11 12 13 14 15 15A GROUND FLOOR WALL LAYOUT 12000 A1 4500 E1 15000 E 15000 C 60000 15000 D 15000 B C 4500 A F F A1 3000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 4000 140000 1A 10 1st FLOOR WALL LAYOUT SMC-Factory No.1/MS-Brickwork Page 10 11 12 13 14 15 15A CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation LAYER 1st SOLID BRICK HOLLOW BRICK LAYER 2nd 200 MM THICK HOLLOW BRICK WALL LAYER 3rd, 4th, 5th, 6th LAYER 7th All work shall be carried up in a uniform manner with no one portion being raised more than meter above another at one time With the surface of walls which are subject to plastering or tiling, the joints are to be raked out as the work proceeds to form key for the plaster 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 SMC-Factory No.1/MS-Brickwork Page 17 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation - 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 (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 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: x 20 (cm), reinforced with main bar of 2D12 and stirrup of D6@200  For double skin: Dimensions: 18 x 20 (cm), reinforced with main bar of 4D12 and stirrup of D6@200  Concrete for R.C stiffeners shall be site mixed and of the grade of B15 The 28 days compressive strength of concrete shall not be less than 20 Mpa  All RC stiffener and lintel beams shall be cast after laying the wall with brickwork TYPICAL STIFFENER SECTION 200 200 4D12 180 80 2D12 D6@200 SINGLE SKIN WALL SMC-Factory No.1/MS-Brickwork D6@200 DOUBLE SKIN WALL Page 18 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation Work sequence:  Step 1: Cleaning - All rubbish, hardened mortar & concrete stuck on slab surface must be removed before work begins  Step 2: Line making for brick wall - Base on marked gridlines checked by Kajima’s surveyor ,ACSC surveyor will carry out line marking work for brick walls as below: - - The lines of wall sides lines also to be marked on RC column surface by using laser machine All offset lines will be checked by surveyor and inspection by KOA’s engineer ACSC shall provide the protection to floor surface and marked lines on floor for other finishing works by installing PVC sheets to floor surface  Step 3: Wall ties installation & roughening concrete surface - After line marking inspected and accepted by Kajima, carry out the drilling work for dowel bar installation - Drill holes of 8mm diameter with depth of 10cm ,then remove all drill dust inside drilled holes with air compressor - Insert dowel bars (ϕ6) into concrete column by Sikadur 731 - Mix components of Sikadur 731 & apply it into drilled holes - Install dowel bars into hole at depth of 10cm of the end without bituminous paint - Cure for 24 hours - Roughening concrete surface by hammer  - Step 4: Brick Laying Brick must be clean & wet with water before laying First layer of brick to be laid for adjustment of level with one layer of solid brick Lay brick layer by layer with join width 8-15mm thick The height of brick wall for each stage allowed is: + Single brick wall: 1.0m to 1.50 + Double brick wall: 1.50m to 2.0m SMC-Factory No.1/MS-Brickwork Page 19 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation - Where there is not enough space for laying whole width of brick, the half- brick or cut brick will be used at length to fit the actual space Breaking brick by trowel, hammer not allowed Fill in joint with mortar & joint must be full of mortar After laid, mortar joint must be checked for thickness, crack, looseness…  Step 5: Preparation and casting stiffener columns & beams - During laying of brick wall, the space for stiffeners will be formed - Install the steel rebar connecting to the starter bars installed during casting ground beams/slab - Fix the rebar in the right position with spacers and tie wires - Apply the formwork both sides of wall and fix them securely - Casting concrete grade B15 and vibrate well - Apply the same method with the lintels on the top of laid walls - Dimension of stiffeners, lintels and their reinforcement will comply with the typical design in shop drawings  Step 6: Curing SMC-Factory No.1/MS-Brickwork Page 20 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation - Curing period : within days after laid Curing materials: water spraying  Step 7: Cleaning Masonry faces shall be washed and cleaned free from mortar and cement stains after finish daily work - Washing and cleaning shall be done using fresh water and fiber brushes or wooden scrapers - Metal implements and excessive water shall not be permitted 9.2 Plastering work: 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 Size modulus Ms of sand for mortar mixing to be used for render and plastering works shall be from 1.5 to 2.0 Mortar type to be used shall be sand-cement mortar, class mark #75 (28days compressive strength 7.5 Mpa) with its proportion part of cement: parts of sand Mixed mortar must have stand a Pot life of hour, exceeds must be rejected The mortar proportion will be verified with the result of trial mix and testing before application 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 minutes after all ingredients are in the mixer Workability or consistency of mortar on the board shall be sufficiently wet to be worked under the trowel Water for tempering shall be available on the scaffolding at all time Mortar which has begun “set” one (1) hour after initial mixing shall be discarded Construction method: a Brick wall & RC member surface preparation With Brick wall surface • Brick wall after laid & stiffener column & beams casted must be cured for days & inspected by Kajima • The brick wall surface must be generally cleaned up, free from the dirt substances by water jet that be affected to cohesion of layers of plaster such as dust, grease, oil, mortar laitance, excess mortar… • The joints between bricks must be checked carefully for crack • The joints must be kept free from the dirt by brush • The excess edge of steel wire mesh exposed should be cut out or bended inward • The M&E installed conduits in the brick wall must be filled with non-shrink grout or mortar • Corner beads shall be set and secured at ends with mortar • The horizontal corner beads shall be installed perfectly level and vertical corner beads shall be plumb and straight, taking into account proper plaster thickness • Plaster stop beads shall be installed where indicated on the shop drawings or as required SMC-Factory No.1/MS-Brickwork Page 21 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation • • • to stop plaster surfaces against a dissimilar material to form a neat and definite joint The plaster stop beads shall be of correct dimensions and shall be installed to correct leveled, shall be plumb, square and true to line to provide the full thickness of plaster specified Leveling peg must be provided Line markings must clear horizontally & vertically to achieve plumbness & levelness each 2m The surface of brick wall must be water-sprayed to keep damp avoiding the bricks to absorb the water of plaster mortar With RC members surface: • • • • • • • • • • • • • The RC member surface must be checked carefully to clarify the crack, honeycombs or tie rods holes For the cracks & honeycomb must be investigated to find out the reason and treat it with the approved method For the tie rod holes at the external RC elements must be plugged by suitable wall plug for water tightness avoiding (The water plugging sample will be submitted later) the penetration of water The ceiling & RC members surface must be kept free from concrete laitance, excess concrete, grease…by water jet & steel brush For mortar laitance, blinder, deformation or convex surface must be taken out for flat by handy chisel or steel brush Taking out all timber, concrete debris, rivet, nail to have ready to receive plastering surface Corner beads shall be set and secured at ends with mortar The horizontal corner beads shall be installed perfectly level and vertical corner beads shall be plumb and straight, taking into account proper plaster thickness All concrete defects must be repaired with approved MS & materials and to be inspected & approved by Kajima Plaster stop beads shall be installed where indicated on the shop drawings or as required to stop plaster surfaces against a dissimilar material to form a neat and definite joint The plaster stop beads shall be of correct dimensions and shall be installed to correct leveled, shall be plumb, square and true to line to provide the full thickness of plaster specified Leveling peg must be provided Line markings must clear horizontally & vertically to achieve plumbness & levelness Cleaning up the M&E utility point, repair it if defect occurred The holes or cracks around the M&E services must be evaluated and treat it by suitable non shrink grout or mortar b Bonding coat & spatter dash • The surface of RC members must be brushed with stiff wire brush to remove all traces of loose concrete All concrete surfaces to be saturated with water before applying slurry • Slurry to be mixed with the proportion by volume: Cement: Sand: Liquid= 1: 1: Liquid: part of Sika Latex + part Water • Cement & sand shall be properly mixed until attaining uniform color, and correct amount of liquid (water & SIKA Latex) will be added to achieve workability SMC-Factory No.1/MS-Brickwork Page 22 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation c Plaster lines & plan marking Internal wall • From 200mm offset lines marked for brickwork, use laser machine for installation of level pegs at interval of 1.8m for both ways( directions) • The first finish plaster line of wall will be ink marked on the floor, this line will be offset out to 0.5 to 1m from real position of its (Root of wall) to avoid the loss or hiding by mortar during plastering • Laser machines/plumb will be used to position the second plaster line on the top of wall Exterior wall • From 200mm offset lines marked from the wall, use plumb & Theodolite for installation of level pegs at interval of 1.8m for both ways( directions) • The first finish plaster line of wall will be ink marked on the floor, this line will be offset out to 0.5 to 1m from real position of its (Root of wall) to avoid the loss or hiding by mortar during plastering • Laser plumb/laser machines will be used to position the second plaster line on the top of wall d Wire mesh reinforcement at connections of RC structures and brick wall • The joint between the concrete members & brick wall such as lintels, RC column, and around door, window openings…200mm strip of wire mesh be installed to cover the joint prior to plastering, the wire mesh to be fixed by nails not to exceed 300mm intervals, the head of nails must be treated with the bitumen before applying plaster (external wall) • At the joint of stiffener, intermediate column (250mm or under) and brick wall, 400mm strip of wire mesh shall be installed SMC-Factory No.1/MS-Brickwork Page 23 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation • The joint around M&E points utility, electric wire duct on the brick wall must be also covered by wire mesh with 200mm e Plastering Internal wall • Spraying water into brick wall surface to keep wetted prior to plastering • The plastering work should be carried out from up to down, from the middle to corner • The mortar will be applied higher than the pegs level of plaster plan, and spread out and make flat by float & aluminum straight ruler, the thickness of plaster internal is 1.5cm First line of plaster to be applied (Refer to figure 04) SMC-Factory No.1/MS-Brickwork Page 24 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation • Remove level pegs right after finish trowel of surface & patch up removed level peg areas • During the plastering work, the or 5m straight bar must be used to control the flatness • In all corner the plumb of corner beads must prevail External wall • Spraying water into brick wall surface to keep wetted prior to plastering • For groove area stiff timber will be used to assure the correct dimension & straightness of the groove • The plastering work should be carried out from up to down, from the middle to corner • The mortar will be applied higher than the pegs level of plaster plan, and spread out and make flat by float & aluminum straight ruler, the thickness of plaster internal is 1.5cm First line of plaster to be applied f Curing for plaster wall • • • Each mortar layer must be cured with water for three (3) days Curing material : burlaps and PVC sheets, water spraying Use chalk to mark the date of plastered wall on plaster surface for monitoring & curing Work sequence: - a/ Preparation: Wall surface shall be prepared to be free of all dirt, loose material, grease or oil and well damped before applying the plaster coat Scaffolding shall be installed adequately to meet the requirement of mason operation Cover the floor with plastic sheet or similar material to protect the floor surface b/ Setting out and marking: - Using theodolite to set up the location mesh for thickness and flatness in the vertical and horizontal direction of true plane of plastering at spacing of around 2.5x2.5 m c/ Installation of PVC Plaster Bead: - PVC corner beads shall be installed to exposed outer wall corners, internal door openings up to the level of 2.20m from the floor finish level PVC beads shall be fixed to brick walls and concrete by mortar at interval 400mm d/ Installation mesh: - Install meshes at the connections of RC structures (stiffeners, lintels) and on the M&E conduits Apply band of Ø1mm steel mesh 5x5mm, 120 mm wide at any joint on flush surface between brick wall and RC columns or stiffeners to prevent crack of shrinkage Any groove SMC-Factory No.1/MS-Brickwork Page 25 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation on brick wall to embed the conduit shall be cover with steel mesh as well e/ Plastering: - Plaster work will generally carried out from the higher to lower walls or area of wall Preparation, proportion, mixing of cement mortar for plaster work are the same as of brickwork Apply mortar to the wall surface for base coat of mm thick Using hand trowel to make the plaster surface smooth and straight Repeat the application for the finish coat of 10mm thick Using straight bar and rest on the location point to remove the excess mortar and make the true plane of plastering surface Using trowel to make a smooth, flat surface d/ Curing and protection: - Cover the plaster surface right after the work finished All plaster shall be keep damp for at least days by water SMC-Factory No.1/MS-Brickwork Page 26 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 10 RESOURCES 10.1 TOOL & EQUIPMENT The equipment to be used for the construction of s is listed below No Description Concrete mixer Specification 100 liters Unit ea Q’ty 2 Drilling machine 12 mm dia Max ea Wheel barrow ea 12 Electric Hoist ea Scaffolding set 1000 kg Capacity Remarks 10.2 MATERIALS Type of material: No Description Size Item Type Steel D6,8,10,12 Origin Reinforcement Bar Bituminous , Bonding agent Hollow brick Solid brick Cement Cement PC40 Fico, Cam Pha, Nghi son Concrete Concrete B15 Site mix Water Chemical Burned Clay Brick Burned Clay Brick Pomina, Vinakoyei Sika 180 x 80 x80 mm 180 x80 x40 mm Duong Hai Phat, Ton hung, Dại loc Kajima Materials handling, storage and delivery - Concrete: Ready- mixed concretes are transported from batching plant to site in concrete truck (6 to 12 m3 capacity) The concrete must be delivered to site within maximum 60 minutes depend on the mix design of concrete supplier - Formwork: Formwork will be pre-fabricated then stocked on yard with protection of plastic cover Before installing, the formwork will be transported to site and placed near the excavation The surface of formwork must be clean of dirt, loose concrete and to be applied the release agent, if needed - Steel rebar: SMC-Factory No.1/MS-Brickwork Page 27 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation Delivered reinforcement bars are to be stored in stockyard nearby fabrication shop for convenient moving to the shop for cutting and bending Fabricated bars will be separately stored in the next area in the fabrication yard with tagged bundles to avoiding steel scraps mix-up Steel bars are stored on the steel platform or concrete blocks to prevent the contact of steel rebar with the ground All steel rebar are stocked in the steel yard with roofing and cover with plastic sheet to protect them with rain water Prior to fabrication of reinforcement, samples shall be taken from each batch of each size of each delivery and tested for compliance in accordance with Quality Control procedures - Bricks: Brick will be stocked on firm, level ground with the height not exceed 1.5m - Cement: Cement bags delivered should be stored at enclosed storage with 100mm above ground level and covered by plastic protection in order to prevent the moisture The cement bags shall be stored in piles not more than bags high - - Sand: Sand will be stock on site on the plastic sheet Before using, it will be screened to remove the rubbish and other impurities Other materials are keeping in storage and they are transported to the site work when they are in used SMC-Factory No.1/MS-Brickwork Page 28 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 11 QUALITY CONTROL - - All burned clay brick, sand and cement shall be procured from approved sources Burned clay brick, sand and cement will be delivered to site under the control of the Procurement Section - All cement, brick, sand will be sampled and approved before any order and delivery - A delivery docket and mill certificates will be supplied with every delivery of burned clay brick, sand, cement Mortar sample also to be taken for testing for compressive strength prior to site mixing The tolerance of Brick work and Plastering work will comply with KOA ITP shown in Appendix Tolerance for bricks shall conform to TCVN 1450:2009 and TCVN 1451:1998 Tolerance for brick work of wall shall conform to TCVN 4085:2011 No Tolerance Deviation with designed dimensions Thickness Level of brick blocks and stories Width of wall panels between the doors Width of adjacent openings Baseline offset of center lines of structures Misalignment and angle deviation between planes of brick blocks with vertical true plane - Each story of building - Full height of building Lateral misalignment of brick block 10m long Asperity on vertical surface of brick block (check with 2m long straight bar) - On non- plastered surface - On to-be-plastered surface SMC-Factory No.1/MS-Brickwork Page 29 Permissible Deviation (mm) Wall Column ± 15 -10 15 20 20 ± 10 -10 10 10 30 10 30 10 5 10 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 12 RISK ASSESSMENT See attached Appendix No.3 13 SAFETY PLAN With regard to health and safety control, all the works shall be carried out following KOA Safety regulations Some of safety measures are shown as below: No Description of job Working at height Hazards +Falling accident during installation rebar, formwork + Accident during casting concrete +Falling object from the height Hazard events Injury or death to workers or operators Form and Re-bar Installation and Concreting Works Injury of people/worker High scaffolding Fall down of concrete equipment accessories worker hit by these falling objects + Scaffolding collapse Removal or dismantling forms or any temporary structures Unsanitary Site Condition Workers struck or hit by falling fill materials or any objects Scattering of dirt/garbage and some chemicals Injury of people/worker Injury of people/worker Damage to neighborhood inhabitants Preventive measures + Install scaffolding to provide sufficient working area on platform + Install the ladder for escalation + Install handrail around platform + Install warning tape, barrier to stop person enter the working area + Workers must alert when installation of heavy steel materials + Wear protective equipment during + Installation and concreting works + Scaffolding must be installed on firm and secure base + Using base jack to adjust the level of scaffolding base + Using steel prop to support the scaffolding + Bracing the single scaffolding together + Provide qualified personnel to and supervise the job Action by Forman / Supervisor / Worker + Avoid leaking of chemicals and other solution Forman / Supervisor / Worker Forman / Supervisor / Worker Forman / Supervisor / Worker Forman / Supervisor + Keep the site clean before stop working Machinery & Other Equipment SMC-Factory No.1/MS-Brickwork Oil spillage to earth Damage to neighborhood inhabitants Page 30 + To make sure all machinery free of oil leak + Repairing/maintenance of machine and other equipment should be done with proper way to avoid oil spillage to earth/ drain Forman / Supervisor / Worker CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 14 APPENDIX Appendix-1: Construction Schedule Appendix 2: ITP for related works Appendix 3: Risk assessment Appendix 4: Safety check sheet Appendix 5: Specification of Corner bead END SMC-Factory No.1/MS-Brickwork Page 31 [...]... dimensions Thickness Level of brick blocks and stories Width of wall panels between the doors Width of adjacent openings Baseline offset of center lines of structures Misalignment and angle deviation between planes of brick blocks with vertical true plane - Each story of building - Full height of building Lateral misalignment of brick block 10m long Asperity on vertical surface of brick block (check with... 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 of D6@200  For double skin: Dimensions: 18 x 20 (cm), reinforced with main bar of 4D12 and stirrup of D6@200  Concrete for R.C stiffeners shall be site mixed and of the grade of B15 The 28 days compressive strength of concrete shall... 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... SMC-Factory No.1/MS -Brickwork Page 22 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation c Plaster lines & plan marking Internal wall • From 200mm offset lines marked for brickwork, use laser machine for installation of level pegs at interval of 1.8m for both ways( 2 directions) • The first finish plaster line of wall will be ink marked on the floor, this line will be offset out... from real position of its (Root of wall) to avoid the loss or hiding by mortar during plastering • Laser machines/plumb will be used to position the second plaster line on the top of wall Exterior wall • From 200mm offset lines marked from the wall, use plumb & Theodolite for installation of level pegs at interval of 1.8m for both ways( 2 directions) • The first finish plaster line of wall will be ink... 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. .. Mpa) with its proportion: 1 part of cement: 3 part of sand in volume The mortar proportion will be verified with the result of trial mix on site and testing prior to be use SMC-Factory No.1/MS -Brickwork Page 14 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation Mortar will be mixed by mixer which has capacity of 100 liters on site Material of mortar will be measured in... method: a) Preparation: SMC-Factory No.1/MS -Brickwork Page 15 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation Clean top surface of concrete slab of dirt, projection and laitance before starting masonry construction Clean brick of all dust and dirt before laying Setting out by marking on slab and column the border lines of the wall with theodolite Spray water on sub-base... out the drilling work for dowel bar installation - Drill holes of 8mm diameter with depth of 10cm ,then remove all drill dust inside drilled holes with air compressor - Insert dowel bars (ϕ6) into concrete column by Sikadur 731 - Mix 2 components of Sikadur 731 & apply it into drilled holes - Install dowel bars into hole at depth of 10cm of the end without bituminous paint - Cure for 24 hours - Roughening... Laying Brick must be clean & wet with water before laying First layer of brick to be laid for adjustment of level with one layer of solid brick Lay brick layer by layer with join width 8-15mm thick The height of brick wall for each stage allowed is: + Single brick wall: 1.0m to 1.50 + Double brick wall: 1.50m to 2.0m SMC-Factory No.1/MS -Brickwork Page 19 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects