Method Statement of RC suspended slab

CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation METHOD STATEMENT SMC Manufacturing (Viet nam) Factory-Phase Project RC 1FL SLAB Ref No: SMC-ACS-MS-00-CCW-003 Rev 01 ACSC- CONG TY CO PHAN XAY LAP THUONG MAI SMC-Factory No.1/MS-RC 1FL slab Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation Revision History Revision 00 01 Date of issue 28/9/2015 30/9/2015 Purpose of issue (approved/ revision) For Review For Approval Submitted by ACSC Prepared by Reviewed by Approved by Name Lương Văn Lượng Nguyễn Hoàng Trinh Nguyễn Văn Trung Position Deputy Site Manager Site Manager Project Manager Date Signature Approved by KOA Checked by QA-QC QA-QC HSE KDA Position Date Signature Date Signature Reviewed by Approved by Approved by Client Name Prepared by Reviewed by SMC-Factory No.1/MS-RC 1FL slab Position Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation Contents SMC-Factory No.1/MS-RC 1FL slab Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation INTRODUCTION 1.1 GENERAL • This document describes the procedures and method of work for carrying out the construction works for RC slab of building factory No.1 This method statement will be applied for first floor (level +7.250m) Construction work of this slab will be repeatedly carried out after s underneath columns completed The constructions of columns were carried out by previous stage; therefore they will no longer discuss in this method statement 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 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 SMC-Factory No.1/MS-RC 1FL slab Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 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)  Height : 11.40m o Utilities area: x (120m long, 4.5m wide) SMC-Factory No.1/MS-RC 1FL slab Page CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 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-RC 1FL slab : 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-RC 1FL slab Page 5000 500 2000 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation TYPICAL CROSS SECTION SMC-Factory No.1/MS-RC 1FL slab 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 VÕ CÔNG HIẾU (MP: 01676211311) LƯƠNG VĂN LƯỢNG (MP: 093 734 3055) voconghieu@acsc.com.vn luonglv@acsc.com.vn Site Engineers QA&QC Nguyễn Minh Tuấn (MP: 098 314 5069) Trần Văn Nghiệp (MP: 090 935 6020) tranvannghiep@acsc.com.vn Nguyễn Văn Hào (MP: 0938.722.730) Shop Drawings Hoàng Văn Hải (MP:908 818 1059) Safety Supervisors Nguyễn Anh Đức (MP:0986 274 758) Đỗ Vũ Quyền Anh (MP:090 853 1908) Construction teams An An Company Phương Phương Việt Company SMC-Factory No.1/MS-RC 1FL slab 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 VÕ CÔNG HIẾU Factory No.9 TRẦN AN TOÀN NGUYỄN MINH TUẤN NGUYỄN VĂN HÀO TRẦN VĂN NGHIỆP ĐỖ VŨ QUYỀN ANH LÊ VĂN TUẤT BÙI CÔNG HUYNH BÙI THANH HẢI PHẠM VĂN MẠNH SCHEDULE Construction Schedule of 1FL beams/slab is attached in Appendix-2 SPECIFIC STANDARD Reinforced Concrete Beams/slab shall be carried out in accordance with the requirements of: - - SMC MANUFACTURING (VIET NAM) FACTORY-PHASE PROJECT Specification for beam/slab works Current Vietnamese Construction Standards + TCVN 5593 : 1991 Vietnamese standard 5593-1991 (Building engineering work - Permissible tolerances in geometry) + TCVN 1651-2008 Vietnamese standard 1651-2008 ( Steel for the reinforcement concrete, part1+2) + TCVN 4453 – 1995 Vietnamese standard 4453-1995 (Concrete structures- codes for construction, check and acceptance) + TCXDVN 371 - 2006 Vietnamese standard 371-2006 (Acceptance of constructional quality of building works) Related Materials approved by KAJIMA & Owner SMC-Factory No.1/MS-RC 1FL slab Page 10 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation PREPARATION WORKS - Scaffolding preparation: + Scaffolding will be installed aside the and be propped/braced securely + Install platform and handrail on each story of scaffolding + Provide the ladder on scaffolding from the ground to the working level - Surface preparation + Chip out and remove all debris, loose material on top surface of s + Cleaning the surface on the top of s with water + Cleaning any laitance, dirt, dust on the starter bars - Pre-fabricate formwork + Plywood are cut in compliance with design width + The reinforced steel boxes 4x8 (cm) are fixing to plywood to result the formwork panels + The formwork panels will be transported to site near the construction area + To ensure the fair-face formwork, the plywood will be used with maximum cycles - Pre-Fabricate Steel rebar + Obtain approved shop drawings and Bar Bending Schedule + Manufacturing steel rebar + Casting concrete block for spacer + Deliver steel rebar to site and stock near construction area + Install the starter bars of 1FL s, if any + Concrete blocks will be used as spacer for side in order to keep the appropriate concrete covering Spacers will be pre-made with fine aggregate concrete, grade B20 They are shaped by casting in PVC mould D42- D49 (mm) Their heights are depended on the thickness of concrete cover determined in Technical Specification for each kind of structures The concrete proportion is proposed for one mix as below: Cement Sand Fine stone (dmax=10mm) Water - : 50 kg : 49 liter : 99 liter : 22.8 liter Concrete work + Cover starter rebar of s by PVC sheet before casting + Prepare the location for concrete pump + Order the concrete SMC-Factory No.1/MS-RC 1FL slab Page 13 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation CONSTRUCTION METHOD 9.1 Installation scaffolding & support: - The scaffoldings for support are divided into two kind: o For beams: using steel supports 1.0 x 1.0 (m), included props of D49 segment 2.5+ 2.5 + 1.0 (m) bracing with D42 steel pipes and their accessories such as base/top jack These steel supports are braced together with D49 steel pipes and clamps o For slab: using scaffolding 1.25 x 1.50 (m), mostly included layers: 4x 1.5 + 0.9 (m), which are continuously connected together Typical layout of scaffolding for beams and slab is shown as below: Support of Beams Support of Slab All scaffoldings/ supports will be installed on base jacks directly placed on lean concrete of ground floor The supports of beams and slab are also braced together by using D49 steel pipes and clamps to form a secure system SMC-Factory No.1/MS-RC 1FL slab Page 14 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation See attached drawings for more details 9.2 Installation of formwork - Before any use, all the plywood surface will be applied the release agent The elevations of beam bottom and slab will varies depend as designed See attached drawings for more detail Formworks of the beam shall be installed first Gridline will be clearly marked on the top of s Beam formworks will be made by plywood and supported by rectangular steel box 40 x 80 mm for side and bottom of the beam SMC-Factory No.1/MS-RC 1FL slab Page 15 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation SMC-Factory No.1/MS-RC 1FL slab Page 16 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation - Tie rods will also be used through PVC pipes which have a diameter of 10mm to bear the lateral pressure of concrete After casting concrete and take out formwork, this hole from PVC pipe will be treated and filled with mortar See typical detail below - Formworks of the slab shall be installed next The secondary girders, steel boxes 2(4x8) cm are placed on top of scaffolding along the number grid lines The primary girders- steel boxes 8x4 (cm) will be placed directly under plywood at distance 400 mm See typical detail below 9.3 Installation of steel bars - - Fabrication and Installation of rebar shall be done according to the approved working drawing and project specification This will also carry out considering the specified splicing length, splicing location and standard concrete cover Slab rebar or stirrups spacing will also be marked particularly the design spacing Rebar will be installed based on the design layout Concrete or mortar blocks will be used as spacer for side in order to keep the appropriate concrete covering SMC-Factory No.1/MS-RC 1FL slab Page 17 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation - - Beams reinforcement consists of main rebar and stirrups will be assembled first Concrete spacer will be placed both sides of beams and bottom to get appropriate concrete cover Then slab reinforcement bars (bottom and top layers) will be installed next Concrete spacer will be placed at the bottom layer of slab The top layer of slab will be supported with steel chair to get appropriate concrete covering At intersection of main and secondary beams, the top bars (of main beam) and bottom bars (of secondary beams will be cranked to maintain the design concrete covers as illustrated below Top bar of Main beam to be cranked Bottom bar of Secondary beam to be cranked Main beam Secondary beam 9.4 Concrete work - - a Construction joint: The construction joints will be determined at middle span of main beams, e.g 5,0m from the numeric gridlines The formwork of construction joints are made of steel boxes 2x4, 4x8 (cm) or plywood as illustrated below The construction jonts will be reinforced with D10@200 for slab as instructed by Designer SMC-Factory No.1/MS-RC 1FL slab Page 18 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation - The construction joints then will be cut at 2cm deep to straighten them before next adjacent cast b Casting sequence: The 1FL slab will be cast during 13 courses ST cast will start from area of grid 15-14 then continue to the end at grid The layout and sequence of casting concrete as below - Concrete will be transported from batching plant to site by mixer truck, the slump of concrete must be within 12 ± 2.0 (cm) Ready mixed concrete from mixer truck will be then discharge to concrete pump which is set-up near the construction area how its boom can reach to the casting slab SMC-Factory No.1/MS-RC 1FL slab Page 19 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation - Concrete will be cast from a corner of slab to the opposite corner generally with two steps: 1/ Beams will be cast first and well vibrated Only the beams in the zone of casting will be cast to avoid waiting time longer than set time of concrete SMC-Factory No.1/MS-RC 1FL slab Page 20 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 2/ Continue pour concrete of slab c Leveling concrete surface: Concrete finishing level will be permanently controlled by rails installed along casting direction Using spreading vibrator and straight bar to spread and level the concrete The rails are made from D20 steel pipes placed on top of the adjusting support D10 The rails are placed along sides of each cast area at interval 3.7m to suit with length of screeding vibrator These supports will stand on concrete blocks, which are fixed to formwork plywood with nails and tie wire at interval 0.6m After removal of formwork, these nails will be cut off SMC-Factory No.1/MS-RC 1FL slab Page 21 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 3/ Troweling by machine will be carried out to get smooth surface after 2-3 hours - d Curing: The concrete will be cured with water during days Formwork system will be removed when test result of concrete reach to 80% of designed strength, side formwork will be removing after day from finished time casting concrete SMC-Factory No.1/MS-RC 1FL slab Page 22 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 10 TOOL & EQUIPMENT The equipment to be used for the construction of s is listed below Item Description Unit Q’ty Remarks Equipment Steel support D49, L=2.5m With joint pcs 3500 For beams support Steel support D49, L=2.5m Without joint pcs 3500 For beams support Steel support D49, L=1.0m Joint D49 Without joint pcs pcs For beams support For beams support Bracing D42, L=1.0m pcs Base jack D42, 500mm long Top jack D42, 500mm long Platform (360x1000)mm Scaffolding frame H=1.5m Scaffolding frame H=0.9m Scaffolding bracing pcs pcs pcs pcs pcs pcs Top jack D34 pcs Steel pipe D49, L=6m Steel pipe D49, L=3m Steel pipe D49, L=0.5m pcs pcs pcs 3500 3500 2400 3500 3500 200 4300 1080 5500 2100 2000 250 7200 Steel boxes 4x8 (cm), L=1.5m pcs 5000 Steel boxes 4x8 (cm), L=3.0m pcs 1250 Steel boxes 4x8 (cm), L=6.0m pcs 5000 Yoke 2(5x5) cm, L=1.2m pcs 2600 Tie rod D12, L=0.8m pcs 3600 With nuts & washers Tie rod D16, L=0.8m pcs 1800 With nuts Plastic cone, D20/40 pcs 7200 Scaffolding ladder pcs 80 Scaffolding platform 400x1500 pcs 100 1.22 x 2.44 (m) pcs 3620 Boom 45m long ea nos Nos Nos nos 2 Plywood 18mm For beams support For beams support For beams support For beams support For slab support For slab support Machines Concrete pump Spreading vibrator, L=4.0m Concrete Vibrator Gasoline Hammer machine Trowel machine SMC-Factory No.1/MS-RC 1FL slab Page 23 Pumping concrete Vibrate concrete For roughening surface concrete CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation Portable steel cutter Straightening machine Nos Nos Cutting machine Welding machine Bending machine Hack-sawing machine Screwdriver /Drilling machine Level machine Theodolite Nos Nos Nos Nos Nos Nos Nos 1 For cutting steel bar Use for reinforcing steel work Diameter 10mm : SD390, B15-B35 c/ Form work: - Plywood, 18mm thk reinforced with steel boxes 40 x 80 x 2.0 (mm) Wooden strip to form chamfer 15x15 (mm) d/ Curing agent: - SIKA Antisol-S 11.2 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: Delivered reinforcement bars are to be stored in stockyard nearby fabrication shop for convenient moving to the shop for cutting and bending SMC-Factory No.1/MS-RC 1FL slab Page 24 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 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 Unloading reinforcement from trailer by a suitable crane for lifting up reinforcement bundles 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 - Other materials are keeping in storage and they are transported to the site work when they are in used 12 QUALITY CONTROL With regards to the quality control, all works shall be carried out following the established Project Quality Control Plan Installation of form work + Check by leveling machine, tape + Check tightness of formwork by visual + Check rigidity and stability of bracing - Installation of rebar + Checking material: certificate, check dimension by caliper, take the sample for checking physical-mechanical + Check the length, number, position, anchor length, joint by visual and ruler + Thickness of protection: checking by tape + Lap length: Rebar SD390 Ribbed bar: 40d (tensile), 15d (compressive) The tolerance of works related to beams & slab will comply with KOA ITP shown in Appendix SMC-Factory No.1/MS-RC 1FL slab Page 25 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI Architects & Construction Service Corporation 13 RISK ASSESSMENT See attached Appendix No.5 14 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 Oil spillage to earth SMC-Factory No.1/MS-RC 1FL slab Damage to neighborhood inhabitants Page 26 + 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 Safety check sheet is attached in Appendix No.6 15 APPENDIX Appendix-1: Construction Method Drawings Appendix-2: Construction Schedule Appendix 3: Calculation of Formwork Appendix 4: KOA’ ITP for related works Appendix 5: Risk assessment Appendix 6: Safety check sheet Appendix 7: Certificate of steel support D49 1.0x1.0(m) Appendix 8: Catalog of TEKCOM Plywood END SMC-Factory No.1/MS-RC 1FL slab Page 27 [...]... 1B6A 1S1 1S2 1S3 1S4 1S5 The RC beams are divided into: Main beams: supported directly on columns Secondary beams: supported on main beams 7 FLOW CHART AND DIRECTION OF WORK SMC-Factory No.1/MS -RC 1FL slab Page 11 SIZE (MM) 300 x700 400 x 1100 NOTE RC RC 300 x 1100 140 140 140 140 140 RC RC –S.P.S RC –S.P.S RC –S.P.S RC –S.P.S RC –S.P.S CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service... placed both sides of beams and bottom to get appropriate concrete cover Then slab reinforcement bars (bottom and top layers) will be installed next Concrete spacer will be placed at the bottom layer of slab The top layer of slab will be supported with steel chair to get appropriate concrete covering At intersection of main and secondary beams, the top bars (of main beam) and bottom bars (of secondary beams... be cast from a corner of slab to the opposite corner generally with two steps: 1/ Beams will be cast first and well vibrated Only the beams in the zone of casting will be cast to avoid waiting time longer than set time of concrete SMC-Factory No.1/MS -RC 1FL slab Page 20 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation 2/ Continue pour concrete of slab c Leveling concrete... slab is shown as below: Support of Beams Support of Slab All scaffoldings/ supports will be installed on base jacks directly placed on lean concrete of ground floor The supports of beams and slab are also braced together by using D49 steel pipes and clamps to form a secure system SMC-Factory No.1/MS -RC 1FL slab Page 14 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation See... bottom of the beam SMC-Factory No.1/MS -RC 1FL slab Page 15 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation SMC-Factory No.1/MS -RC 1FL slab Page 16 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation - Tie rods will also be used through PVC pipes which have a diameter of 10mm to bear the lateral pressure of concrete After casting concrete... XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation 6 SCOPE OF WORKS: The 1FL suspended slab include main area 140m long x 60m wide and the sub-area along grid A & E The finished level of slab mostly is +7.250 (m) from the Ground floor Some areas have the finished levels at -0.05 or -0.15m (in compared with 1FL) The RC members are listed as below: DIMENSION BEAM SLAB MEMBER LIST MARK... MẠI 2 Architects & Construction Service Corporation The work sequence of construction the RC 1FL slab is shown at the following flow chart Columns underneath suspended slab Previous stage Casting lean concrete of ground slab Installation scaffolding & supports Formwork fabrication Installation formwork Rebar fabrication Installation of steel rebar MEP conduits embedment (by others) Install rails for... top of the adjusting support D10 The rails are placed along sides of each cast area at interval 3.7m to suit with length of screeding vibrator These supports will stand on concrete blocks, which are fixed to formwork plywood with nails and tie wire at interval 0.6m After removal of formwork, these nails will be cut off SMC-Factory No.1/MS -RC 1FL slab Page 21 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects... Top bar of Main beam to be cranked Bottom bar of Secondary beam to be cranked Main beam Secondary beam 9.4 Concrete work - - a Construction joint: The construction joints will be determined at middle span of main beams, e.g 5,0m from the numeric gridlines The formwork of construction joints are made of steel boxes 2x4, 4x8 (cm) or plywood as illustrated below The construction jonts will be reinforced... reinforced with D10@200 for slab as instructed by Designer SMC-Factory No.1/MS -RC 1FL slab Page 18 CÔNG TY CỔ PHẦN XÂY LẮP THƯƠNG MẠI 2 Architects & Construction Service Corporation - The construction joints then will be cut at 2cm deep to straighten them before next adjacent cast b Casting sequence: The 1FL slab will be cast during 13 courses 1 ST cast will start from area of grid 15-14 then continue