INDUSTRIAL EXECUTION METHOD Civil work (Road, pavement..) Infrastructure (WS, WD, Electric, Lighting) Main Workshop (Soil treatment, piling work, foundatioin, Floor, Reinforce concrete, steel structure, sandwich panle, metal sheet, roof, brick work, finishing, epoxy...) Main Office (Soil treatment, piling work, foundatioin, Floor, Reinforce concrete, steel structure, sandwich panle, metal sheet, roof, brick work, finishing, epoxy...) Utility Bike shed Car park Underground tank Mechincal (WS, WD, CDA< PCW, SCB. LPG, PLUMBING, ..) ELECTRICA (TRANSFOMER, MDB, MAIN FEEDER, ELV, LIGHTING, ...) F.P (FIRE FIGHTING, F.A, SMOKE, STRUCTURE)
TECHNIQUE AND PROGRESS CONTENT A.I:EXECUTION METHOD EXPLANATION A.I.1: INTRODUCTION Project: Hanoi sky lake resort golf club house Location: Chuong My town- Ha Tay province Content of bidding package Construction work is built on the area of golf court in Chuong My town Ha Tay province Work area: Building all the club building Scale Architecture solution – Construction work is floor building and pit floor, concreted roofing with art tile Structure solution – Construction work is designed body structure solution using column, beam, and 250# reinforced concrete floor Execution method: – Construction work is floor building and pit floor, built and belong to central area, thus, execution method must guarantee following factors: – Execution method must meet standards about noise, safety, cleaning and next construction works, ensure not affect to surrounding – Transportation means must be cleaned, not dirty tires, no garbage on the street A.I.2: PREPARATION WORK Contractor confirms preparation with large decision to quality of construction After searching for drawing contractor sees that this work requires high quality art, these are some preparation of contractor before execution Document After searching for contractor’s drawing which manage quality work, setting up legal document management is through out from company to construction site such as: employee document includes labor contract, labor safety commitment; material equipment management file includes tested material quality results, checking equipment; completion certificate In Contractor office, there a team of skillful engineer who sets up solution method execution progress for each work in details Pursuant to execution progress file, contractor has planed to prepare manpower, materials, and construction equipments Document is proceeded by contractor and finished when starting execution 2 Human Resource Contractor will appoint a vice director who controls execution directly _ Technology department of contractor has an experienced team of staff who regularly follows up quality of construction work _ Manpower: Contractor has been executing many project of Taiwan, China, Korea and Japan, so contractor has a skillful and responsible team in construction work However, contractor still confirm quality of human resource to the success of contractor Hence, staffs are still trained to enhance ability and especially, 100% of workers are must work with good health skills and safety _ Human resource: Contractor arranges human resource depend on work, especially main work like concrete building, plaster will be guaranteed for production line Professional labor team divided into plaster, building, plaster, steel, concrete, electricity, water supply, equipment installation is combined tightly with each other in execution to ensure progress Material, equipment _ Material and supply: Investor must test material before using, quality of main material must be tested Material must be estimated to be suitable for progress and construction plan in each period In this work contractor focuses on concerning about things for high quality and artic construction work _ Equipment: Contractor has plan to use equipment reasonably, depends on work amount and progress, to supply on execution time, right standard Plan Plan preparation affects to execution progress and construction work quality significantly To arrange reasonable plan, contractor will proceed survey and search for plane, confirming plan of execution, set up execution progress in detail for each category to define office location, store, material ground, mixing machine area and entrance during execution time Contractor proceeds preparation such as locating construction, calculating material transport road, transport land, necessary area for mixing concrete ground, small structure, installation, mixing mortar, brick ground and formworks, steel ground and ensure arranged reasonable plan After calculating for necessary, contractor proceed to protect from dust for environment Main requirement After calculating above floor limiting fallen materials as well as dust After executing floors, Contractor will proceed to spread A.I.3-ARRANGE PLAN Plan must be installed electricity, water supply, control office, tent, depot, other tents are arranged to be convenient for execution Construction concrete is fresh concrete and use concrete pump Requirements when arranging execution plan When arranging the execution plane, contractor will calculate to ensure following factors: Offices and depots: Ensure enough area, satisfy functions of office Store floor is embanked high and chocked for damp-proof to cement Inflammable materials are put separately and packet in buckets Fire extinguishers in offices and depots Security office: Near the entrance and observable to everywhere in the construction site Fixed telephone, fire extinguishers, security equipments in security office Reinforcement executing ground: Tent floor is built high and have satchels Formwork assembling ground: Contractor uses most of corrugated ion formwork The system to support formwork is log of wood and steel log Contractor is responsible for maintaining formwork Contractor also uses both steel and wooden formwork Thus, processed formwork must be far away from depots Water supply Contractor must contact with investor and local government to have water for execution Water supply system is tight in the ground and far from road Sewage system Contractor installs a temporary sewage system, connect water from many areas and pump water to gas hole Electricity Contractor supplies electricity and private wire to electricity box Moreover, contractor prepares generator to guarantee electricity Using rubber covered cables with phases or cores There is electricity clock to measure electricity numbers There are main power sources: For equipments and machines For other activities Contractor installs tension pole across roads, wire is larger than or equal m Lighting system Contractor installs headlights around the work, Light system to protect and serve for execution at night Moreover, contractor supplies another dynamo.40KVA ensures lighting of work and serve machines in case of power cut or executing process at night Arrange plan, contractor guarantee the standard of work, environment, security and safety A.I.4 EXECUTION METHOD GENERAL REQUIREMENT Guarantee execution steps as same as design Guarantee safety for people, machines and work Guarantee surrounding environment Avoid making noise Clean transport means when leaving the work Contractor covers the boot of bike when going out the wor Execution method Base on the drawing, contractor gives the method presented following Survey method Contractor surveys when beginning executing work Survey engineers help experiences and take part in many works In order to set up, maintain figures in work correctly, survey team receives a border line and investor’s standard (receivable certificate) Then, team is responsible for defending border line and fix Base on border line high standard to main pivot, set up pitch system to confirm the pivot Setting up pitch by: each pitch is confirmed by center point This point is set up to use easily and exactly, not affect to execution In execution, contractor bases on pitch and height to execute according to requirement of investor and drawing Survey is always checked and noted in detail Figures are announced to investor A.I.4.1 FOUNDATION EXCUTION METHOD 1)Excavation method Due to large amount of land, we use both method of machine and manuals Excavating by machine is used regularly, using manuals to fix foundation hole Excavating and fixing foundation hole follow to designed depth Around hole, drainage ditches and arrange pump to absorb water continuously in case of rain Excavation process is suitable for restriction to guarantee the stability of roof In case of less stable place, we process to build stake Dimension, form, height of foundation hole must be suitable for design Taking over before going on next work * Risk of excavation Digging in the heavy rain causes soil fall After rain, filling in hole, change 15cm in hole in comparison to designed level After fixing each ground layer, replacing foundation by concrete bricks There is “underground rock” or other, replace by mixing sand and crushed rock Filling up foundation hole After executing foundation concrete, filling foundation hole * Technical requirement in filling land When covering sand, guarantee that foundation sand has moisture in restricted area Dry sand needs to be watered; reduce moisture for much humid sand Cover sand and distribute into each layer and stamp *Technical method Use compactor and worker Stamp layer to another tightly Fill sand by line Foundation work After finishing foundation, place and fix it Pour the lean concrete layer for foundation Use survey machine to confirm centre and mark on the surface of middle layer concrete Proceeding steel installation when the concrete commit to the hardness Use block for small concrete with the same depth as concrete layer for steel Label of this is equal to one of foundation concrete After reinforcement assembling, installing casing used iron formwork Foundation formwork commit to designed type Foundation casing is kept by steel column which is wrapped and wooden column It is important for contractor to guarantee stability of formwork Checking steel formwork and cleaning before pouring concrete Pour foundation concrete: Replace mixed concrete into concrete pump Material of concrete commits to clean standard Use stamping concrete d=45-60mm to stamp concrete The concrete is poured into each layer and damped following to technique Surface of foundation is smooth by hawk, guarantee flat degree and designed level Covering foundation is only proceeded after maintaining concrete following technique finishing, underground work and accepted by investor A.I.4.2: CONCRETE EXECUTION METHODS FOR BODY PART RAW MASONARY Execution of wall, concrete, steel, pit floor Base on structure design contractor estimate, design using casing and recycling during work Reinforcement assembling Tie block concrete with the same thickness as protected concrete and grade as one of structure concrete Preliminary acceptance for reinforcement Drill concrete floor to hammer steel to fix wall thickness Formwork assembling in one side only Pour concrete for wall Reinforcement assembling Before install steel for the wall, contractor uses survey machine to define centre of pivots on the concrete floor Base on pointed centre on the concrete, check the right position of steel, tight steel to other steel in case of right position * Wall reinforcement procedure – Drill to create roughness of wall foot concrete and clean – Adjust straight ahead steel bar, ensure distance between steel bar – Connect straight steel bars with another – Install cross-bar – Adjust steel bars to guarantee size and distance between bar – Tie steel and concrete block into one side, the number of block mass ensure to make steel stable and unbroken – After finishing work, investor checks steel Contractor only proceeds to combine formwork if it reaches requirement Wall formwork combination Contractor confirms: Formwork combination must make wall straight, flat, smooth Thus, formwork must be hermetic, stable Corrugated iron formworks have the same size as structure size In case of missing corrugated iron formworks, contractor uses wooden formwork Contractor cleans and paints a petrol layer before using to untie easily * Formwork assembling procedure Base on defined centre of pivot Line lines to wall edge Drilled hole D12, distance 1.5m per hole Hammer steel pieces D12 following to line in order to become bolt inside formwork Combine one side corrugated iron form work Install steel boxes into lines: Line 1: 20cm from bottom of concrete wall Line 2: 60cm from Line Line 3: 15cm from wall surface Boxes control thickness of concrete wall If thickness of wall always commit to standard, casing will not be deformed After installing and fixing boxes bar, conducting to tie concrete block into other steel wall side Then, clean wall foot and combine casing After combining, casings are propped up by length control machine Contractor uses D12 cable with control machine to control and to pull casing inverse to propulsive force of pulled bar in order to balance pressing force on casing, guarantee stability of casing and control wall casing to the right or the left easily After combining casing, contractor invites investor to check Next, contractor prepares to pour concrete Pit floor concrete wall pouring Method By concrete pump Concrete is poured on the partition with the thickness of 30cm with many times to guarantee solid and adhesive degree Pit floor wall concrete stamping method Before pouring concrete wall, contractor uses pump to water wall foot brick and pour a cement layer with rate ½ and mix additive for damp-proof After pouring mortar, pouring concrete immediately Wall concrete has 14cm- landslide, distance between wall steel is large Thus, contractor uses stamping machine with diameter D50, radius is equal as 1/3 as length of power hammer When covering next layer on previous layer, power hammer is staked out with the depth of more than 5cm Concrete pour requirements Avoid changing position of steel, formwork and guarantee the depth of protected concrete layer Pouring concrete continuously in oder to avoid separately of concrete until finishing any structure following to design The height of falling concrete is smaller than 1.5m to avoid classifying If it is higher than 1.5m, pour concrete by sloping conduit or movable pipe Material conduit must be smooth and hermetic Material conduit width is as 3.5 times as the largest diameter of reinforcement Slope of conduit is guaranteed for concrete not stuck Pouring concrete note: Formwork, scaffold and reinforcement are tested tightly in case of trouble Concrete is stamped by stamping machine All position is stamped in the right way Canvas is available to cover concrete when rain Concrete is not poured because of problems, wait until it reaches at 25kg/cm2 Before pouring, roughness flat is handled, pour solid cement, mix additive for damp-proof Thickness of concrete layer bases on concrete supply, transport distance, type of stamping power, characteristic of structure and it doesn’t exceed standards: Straight stamping: Length of each layer