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Biện pháp thi công bằng Tiếng Anh từ A-Z

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Mục lục
INDEX
Content
Page
Part A: Technique and progress content
4
A.I​
Execution method explanation
4
A.I.1​
Introduction
4
A.I.2​
Preparation work
4
A.I.3​
Arrange plan
6
A.I.4​
Execution method
7
A.I.4.1​
Foundation execution method
7
A.I.4.2​
Concrete execution method for body part
9
1​
Execution of wall, concrete, steel, pit floor
9
2​
Reinforcement assembling
9
3​
Contruction
17
A.I.4.3​
Completion methods for finishing work
19
1​
Plaster
19
2​
Pressing and plastering work
19
3​
Painting work
20
4​
Glazing execution
21
5​
Door installation
21
6​
Electricity, thunder proctection
22
7​
Drainage and supply water system
23
8​
Damp-roof work
23
A.II​
Construction execution progress and construction progress guarantee
24
A.III​
Guarantee method of construction quality
25
A.III.1​
General explanation
25
A.III.2​
The explanation about material and machine supply . Contractor will appply works standard guarantee quality acccording to design
25
1​
Main materials
25
2​
Equipments
25
A.III.3​
Human resource arrangment
26
1​
Technical supervisors
26
2​
Technical engineers and workers in work
26
3​
Workers
26
A.III.4​
Equipments for execution
26
A.III.5​
Execution arrangment
27
A.III.6​
Acceptance
27
A.III.7​
Material supply
27
A.III.8​
List of main materials used in construction
28
A.III.9​
Technical method to guarantee work quality
29
1​
Reinforcement
29
2​
Concrete execution
29
3​
Formwork excution
30
4​
Construction
30
A.III.10​
Apply progressive science and techonology in construction
30
A.III.11​
List of main machine and equipment in construction execution
31
A.IV​
Maintenace commiment
32
Part B: Fire fighting method, safety-insurance bid environental hygiene safely for surrounding work
33
B.I​
Fire fighting method, safety-insurance bid environental hygiene safely for surrounding work
33
B.I.1​
General explanation
33
B.I.2​
Safety –insurance for worker, risk of contractor
33
B.I.3​
Material safety, equipment
34
B.I.4​
Security
34
B.I.5​
Environment sanitation
34
B.I.6​
Fire ,earthquake, flood and storm prevention method
34
B.II​
Safety for surrounding work
35

Part C: Conclusion
35

Part D: Drawing
36
 
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A.I.1: INTRODUCTION
Project: Hanoi sky lake resort golf club house
Location: ChuongMy town- Ha Tay province
1)[FONT=&quot] [/FONT]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
2)[FONT=&quot] [/FONT]Scale
ü[FONT=&quot] [/FONT]Architecture solution
- Construction work is 3 floor building and 1 pit floor, concreted roofing with art tile
ü[FONT=&quot] [/FONT] Structure solution
- Construction work is designed body structure solution using column, beam, and 250# reinforced concrete floor
ü[FONT=&quot] [/FONT]Execution method:
- Construction work is 3 floor building and 1 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
[FONT=&quot][/FONT]
 

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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
1)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.
3.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
4. 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
ü Main requirement
After calculating above floor limiting fallen materials as well as dust.
After executing floors, Contractor will proceed to spread
 

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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 3 phases or 4 cores. There is electricity clock to measure electricity numbers
There are 2 main power sources:
-For equipments and machines
-For other activities
Contractor installs tension pole across roads, wire is larger than or equal 4 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.
 

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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
2. 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.
 

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A.I.4.3. COMPLETION METHODS FOR FINISHING WORK
1. Plaster
Mortar of wall which has been kept for a long time. Then, conducting to mortar to guarantee quality of mortar and affect to surrounding work.
Before conducting mortar, contractor invites investor to check column centre, wall flat degree, tight mortar pulse.
Contractor conducts to mortar, contractor waters on walls, make wall surface and mortar adhesive. Mortar layer do not elastic
Mortar follows to design, thickness depends on structure
Create drainage ditches to sink wire column and technical box.
Mortar surface must be equal and solid
Type of mortar and thickness of mortar base on design standard 15-20mm and divide mortar into 2 periods. Vertical deviation is 0.5% and horizontal deviation is 0.8%
General requirements
Mortar surface is smooth
Angle has square shape
Guarantee structure standards
Contractor is responsible for mortar and completion. In mortaring angles, contractor uses angle ruler to check straight and square shape
Contractor maintains mortar layer after plastering 24 hours
Engineer team completes and are in works regularly
 

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2. Pressing and plastering work:
üPlaster brick is up to the following factors:
Contractor’s title are up to these following parameters:
Absorbent degree Hp<0,2%.
Pressing degree Rn>500kg/cm2.
Curving degree Ru>500n/mm2
Abrasion degree Mn<130mm2.
Durable degree with acid, base, not mouldy surface.
Bricks used must be brand new.
When carrying bricks to rooms for plastering, Contractor will put them along with the wall side in order not to affect structure.
üPlastering work:
Plastering work begins when structure work is finished. The plaster floor is smooth and clean.
Plaster material is in right sizes, colors, design. Plaster brick is at high standard. Cut bricks must be smooth.
Plaster floor is smooth, not rough. Checked by 2m long protractor. Slots between plaster floor and protractor <=2mm. Slopping degree and direction are at right design.
Between plaster floor and bricks is full of mortar. Check solid degree by knocking lightly on the plaster floor.
The thickness of cement layer <=15mm. The circuit between bricks is pure cement and water.
At compulsory positions about damp-proof, check the damp-proof layer and other details before plastering.
Plaster floor must be built according to design about pattern color, height, smooth, plopping, connection to floor degree.
Pressing and plastering work will be ensured the whole enamel surface of producer by the contractor after being finished.
ü Pressing work:
Pressing work is installed after building and taking over electricity and water departments and other underground parts.
Press structure surface is according to straight direction. Across pressing circuit needs being full of mortar building pressing and building producer.
Clean the press floor after pressing each part or all parts. Cleaning the press floor is processed only after pressing circuit gets hard.
Press floor must be followed the following demands:
General press floor is ensured the right shape and geometric size. The color must be the same.
Across and straight mortar circuit is sharp, straight, regular.
Mortar between structure and pressing bit is solid.
There is no stained point of paint and lime. When checking by 2m protractor, slot between pressing bit and protractor is <= 2mm.
 

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3. Painting work:
After checking that all walls are so smooth, we do the painting. In painting process, check every angle by lights. All mistakes must be corrected at once.
Painting layer surface is smooth, not rough.
Protection method must be made in crowded areas.
4. Glazing execution:
Structure is stable, no dirty, oil before Glazing.
To guarantee the connection between smooth mortar layer and floor, the smooth surface needs watering. If having the lined smooth layer divides 10 – 15cm areas.
The last smooth layer uses cement sand mortar with maximum material rod<= 2mm. After 4-6 hours, depending on the weather, moisture and air temperature, we finish by spreading a concrete line or thin mortar concrete.
The smooth surface must be guaranteed about surface finish according to design. Grinding process is done at the same time with mending general tit and tear surface.
Thread bend work is done right after painting. Thread line need regular about weight, depth and sharpness. If use roller with anti-smooth material, roll right after color cement layer is not solid.
Areas and positions have demand about high damp-proof such as: toilet, water tank, conduit….must process damp-proof layer according to design.
Quality of smooth surface must guarantee about taper, plane ness.
5. Door installation:
- Wooden doors and aluminum-glass frame doors are manufactured in workshop according to design and rechecked through practical execution. Contractor will give product quality certification to investor before execution.
- Contractor guarantees installing with right technique and experienced team. Check carefully straight, door frame smooth degree when installing.
-Aluminum-glass frame doors are checked by high pressure pump. The connection between door and wall is processed by glue and damp-proof.
- Coefficient of hardness of door must be high and no deformation.
- Detail installing must be accuracy. Doors must move smoothly. Bolt lock, hinge are tight, fine art.
- Door surface must be smooth, no cement mortar or closed chemical on it.
- Glass is up-to standard product, no ripple.
- The filled connection is used with transparent and good silicon glue which is not changed color when sun and rain.
- Installing windows and doors are processed late. It is guaranteed not to spoil already work such as ceiling, wall…
- Hinge must have good incompetence and be installed tightly and accuracy. Handgrip, door lock must be installed tightly and accuracy.
- All door and glass wattle must have good incompetence, against windstorm according to design.
 

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6. Electricity, thunder protection
Electricity execution
Contractor appoints a skillful and experienced engineer and technical team
Investor checks materials like conduit, wire protected pipes, plug foot protected pipe...
Contractor checks electricity system before giving for investor
Electricity execution divided into 2 steps:
Step1: Stretch underground -wire
Step2: Installation floated wire equipments
üStretch underground wire
Investor checks quality of wire, conduit, and wire protected pipes, plug foot protected pipe….Then, contractor starts to install
Before plastering walls, ceilings, contractor estimates wire plan, position of connection boxes, sockets, electricity box
üUnder ground wire pipe installation follow steps:
- Base on electricity drawings, line electricity map on the wall
- Cut pipe to help install pipes on right position
- Contractor puts plated corrugated or zinc pipe with thickness of 15mm. Thickness is equal to length of wall or floor. Contractor uses cement mortar to keep wall or floor
- Guarantee distance between hot pipes and other heat surface is 15cm. After installing pipes, it must be dry and contractor uses glue to connect pipes by pike
- At bend point, contractor uses spring – mattress and not reduce pipe area .Inside radius is not smaller than pipe diameter
- Pipes must guarantee: Straight, covered, smooth
- Rim pipe tight, avoid water and other objectives
- Clip pipe carefully ,clip point is not exceed 200mm from electricity box edge .Distance between clips is not exceed 1000 mm and 800 mm to the straight direction
- Before using pipe, if it is humid, contractor uses air compresses to make dry. After installing, contractor surveys and invites investor to check. Cover XR mortar on the pipes before finishing survey
üocket foot, switch foot, connection box, and electricity box
Distance between socket and floor according to design
Distance between switch and floor according to design
Distance between electricity box and floor according to design
üRequirements:
Box foot, contractor estimates to prominence to make foot and wall equal
Inside wall box are the same in types
üAbove electricity installation
Equipments are executed at last, after finishing others
Investor checks types of equipments .Quality of work must be checked. Packets are labeled dates and location, features. Contractor gives certificates to investor
After checking products, contractor installs equipments to be suitable for design. Equipments must be clipped carefully.
After installation, contractor invites investor to try and check
üThunder protections
Thunder protection system includes: Thunder collected needle D16 with length of 0.8m; Thunder collected line D10 placed on wall and ceiling. Ground connection steel line D14 connecting steel line and ground connection column is 63*63*6 with the length of 2.5 cm
After installing, contractor investor to check, contractor guarantee features : Underground connected resistance R<= 4
7. Drainage and supply water system
Consist of running water, fire fighting supply system and drainage system for completion
Drainage and supply water system is galvanized and PVC and do according to requirement
Inside wall equipments are placed by contractor. After installing, contractor will test run to check pressure and takeover
Pressure for drainage system is 0.7 kg/cm2 and trial run time is 12 hour, reducing pressure to be smaller than 0.005 kg/cm2.Contractor gives trial methods to investor to try
In executing water supply system, contractor guarantees tight and is not leaked out
Base on design and requirement of contraction document, checking and taking over types. Then, contractor starts to install equipments
Sanitation equipments must be clean until taking over. Avoiding remained sand, collected funnel is without cement, sand, paint…
Forbid using before sanitation equipments except in experiment
8. Damp-roof work
- Damp-roof work is very important because it affects to using and aesthetic. Thus, contractor supervises tightly execution.
- Damp-roof work demands the combination of many phases, even BTCT execution will be noticed carefully.
- Aggregates (sand, rock) must be cleaned by fresh water before concrete pouring. This part of reinforcement concrete needs additive material to improve damp-proof competence of structure. Additive material is used following to supervisor.
- Proof floor and toilet floor must be soaked with cement water during 20 days.
- Concrete surface must be cleaned before damp-proof execution. Its surface must be dry and cleaned by pressure-blower.
- Damp-proof surface must be filled with a pure cement mortar layer before plastering or bottom concrete pouring. Concrete pouring work to make slope needs executing when mortar layer is still wet so that it is guaranteed mortar layer is not harmed.
- The second damp-proof by glue is processed above the surface of slope to satisfy the demand of smooth slope. After that, it is swept according to design.
- In the position of drainage pipe must be used metal, no plastic funnel.
 

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A.II. CONSTRUCTION EXECUTION PROGRESS AND CONSTRUCTION PROGRESS GUARANTEE.
- Construction has a beautiful view and demands fine art quality and high technique. In order to guarantee about fine art quality, high technique and progress construction, contractor will arrange staff team and experienced engineers to manage the structure.
- Contractor will use a suitable method to manage manpower. Each employee will receive detail work and have high responsibility.
- Contractor ensures to use qualified employee.
Progress construction diagram:
- Ensure to follow the right design, contract document and requirement of investor.
- Ensure to execute with good quality, safety and the right process.
- Arrange myriapod, flexible method according to the details work.
- Arrange manpower to be suitable with process, each work and guarantee process line is suitable and not overlap and waste.
- Supplying material is guaranteed to be on time and never to be in shortage condition.
- Machine is supplied to be on right time according to process. Contractor uses mechanization into process. In necessary case, contractor will add more machines to hasten the process according to investor.
- Supply enough formwork, scaffold for concrete pouring and 3 floors and avoiding the death time.
- Guarantee to combine and impart the investor’s idea.
Contractor and represented investor always check process and plan on every Monday to guarantee the rate of progress.
With this aim and plan, Contractor guarantees to finish all of work within 190 days.
 

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A.III GUARANTEE METHOD OF CONSTRUCTION QUALITY
A.III.1. General Explanation.
Contractor especially appreciates building construction quality management. Building construction quality is the main aim of contractor. Building construction quality also is the main factor which creates stable belief of investor to contractor and this makes contractor successful.
A.III.2. THE EXPLANATION ABOUT MATERIAL AND MACHINE SUPPLY. CONTRACTOR WII APPLY WORK STANDARD TO GUARANTEE QUALITY ACCORDING TO DESIGN.

  • Main materials
Contractor guarantees the standard quality for all material according to technical stipulation design. All material will have certificated quality result, finished bill, quality register of producer, experienced result to present to investor before using. Contractor will guarantee to supply 100% newly material according to design.
üCement
Using Porland PC30 cement following to TCVN 2682-92 standard. The spare time of batch of cement before use is within 3 months. Manufactured date and year is on the wrapping or have certificated producer.
üSand, Rock
Construction uses mainly yellow, black sand. Rock is stable enough, no impurities not to influence to concrete’s volume, stability and damp-proof. Rock is grinded by machines. Contractor guarantees not to use exploited, manual rock.
üMixed concrete
Contractor will supply fully fresh concrete to be suitable with process according to design’s label and have enough quality certification.
ü Reinforcement
Use Thai Nguyen steel or qualified steel according to investor’s demand.
üOther material
Other material using in construction will be guaranteed about quality according to investor.

  • Equipments
Contractor will have plans to supply motor bike, detail execution equipment to each period according to the amount of work. Contractor guarantees to have the best effect and right process.
Contractor will add more amount of motor bike in necessary case according to work and process.
Contractor will contact directly and have necessary permission to transport all type material and machine to construction. Contractor supplies the amount of scaffold, formwork in right demand.
 

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A.III.3. HUMAN RESOUCE ARRANGMENT
1. Technical supervisors
Construction engineers, responsible skillful and experienced supervisors includes:
+Technical engineers (Machine, Construction equipment) : 1 person
+ Construction technical engineers (plan, materials) : 1 person
+ Supervisor : 2 persons
+ Construction engineers (Execution) : 2 persons
Execution methods for each specific work, check working procedure of workers
Combine with controllers to check and take over works, set up checking certificate, completion document
Checking quality of materials, safety
2. Engineers, technical engineers and workers in work
Arranging technical staffs in work who are generic, experienced, and healthy. These staffs guide and check work regularly work
+ Geodesic engineers : 01 person
+ Electric and water engineers : 02 persons
+ Construction engineers : 03 persons
+ Architect : 03 persons
Checking and taking over inside between supervisors of company and water construction company. After finishing, investor concludes
Set up construction work document diary, other certificates
3. Workers
Skillful workers have grade of more than 3/7 and are trained about construction field. This team took part in many works
 

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A.III.4. EQUIPMENT FOR EXECUTION
Equipments are equipped for execution of workers; ensure quality, capacity as following:
+ Mason:
-Ruler , hard aluminum ruler
-Plumb bob
-Nivo
-Square angle ruler
-Nylon line
-Steel scaffold
-Brick and concrete cutting machines
+ Home decorated carpenters are quipped:
Electric– saw, planer, air compressor, nail gun, rulers, and plumb bob
+ Steel man is equipped:
Cutting machine, curved steel machine, wielding machine
Use all general equipments to serve execution effectively and fast like: using excavation machine, car, steel scaffold, formwork in execution and equip light system at night…
Equip computers, telephone, fax, mobile phone…
+ Survey department
Arrange staffs, survey engineer with experience
Use measurement machines for survey:
-02 theodolite machines
-02 water box machines
-Steel ruler with length of 100m
These kinds of machines must be tested and licensed
Survey team must be in construction work
Survey team must be in construction work from the beginning to completing work.
Set up axis center, construction work center, border
Serve completion work, measure to complete the work.
 

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A.III.5 .EXECUTION ARRANGEMENT
Plan execution progress in detail every week; combine between concrete, raw construction, plaster, ashlar pave
Combine execution works to avoid overlapping
Prepare space reasonably, avoid making noise and dirty to surrounding works
A.III.6. ACCEPTANCE
Check and take over according to order, from inside contractor to contractor and technical supervisor. At last, transfer work. Basis of taking over is:
-Tested design document
-Technical regulations and instructions of producers to maintain materials
-Test results, experiment and equipment volume are done during construction process
A.III.7.MATERIAL SUPPLY
Choose high -quality material factories and supply sources
Quality material test: It is very important to guarantee work quality. Materials must be tested before transferring to the work and investor to test quality
Main materials must be tested:
- Reinforcement
- Concrete
- Cement
- Brick … ( Serve for building, plasting…)
 

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A.III.6. ACCEPTANCE
Check and take over according to order, from inside contractor to contractor and technical supervisor. At last, transfer work. Basis of taking over is:
-[FONT=&quot] [/FONT]Tested design document
-[FONT=&quot] [/FONT]Technical regulations and instructions of producers to maintain materials
-[FONT=&quot] [/FONT]Test results, experiment and equipment volume are done during construction process
 

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A.III.7.MATERIAL SUPPLY
Choose high -quality material factories and supply sources
Quality material test: It is very important to guarantee work quality. Materials must be tested before transferring to the work and investor to test quality
Main materials must be tested:
- Reinforcement
- Concrete
- Cement
- Brick … ( Serve for building, plasting…)
 

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A.III.8. LIST OF MAIN MATERIALS USED IN CONSTRUCTION
No
Main material
Manufactured source
1
PC30 cement
Hoang Mai, Bim Son, Nghi Son or so on
2
White cement
Hai Phong white cement or so on
3
Mixed rete
Mixed station
4
Steel types
Thai Nguyen steel
5
Thread brick
Label A1 type factory>=75
6
Sand types
Vietnam standard fresh sand
7
Macadam types
Grinder by machine standard rock Kien Khe-Phu Ly
8
Paint
KOVA paint, Mexilitex or so on
9
Pressing non-slip brick
Viglacera brick
10
Plastering ceramic brick
Viglacera, Long Hau, Hong Ha brick
11
Door types
Depend on design type
12
Material and equipment electricity
According to design
13
Material and equipment drainage
According to design
14
Casing, formwork
Fixative corrugated casing and wooden pressing casing
15
Scaffold, satchel
PAL, Minh Khai scaffold; steel constriction satchel

Besides, all material will be supplied into construction according to design and investor’s demand.
 

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A.III.9.TECHNICAL METHOD TO GUARANTEE WORK QUALITY
General explanation
Contractor is responsible for work execution according to agreement, guarantee work quality according to technical drawings, procedure and execution, construction standard, construction quality.
Contractor guarantees high quality to any articles concerning to work, from space preparation, land survey, dimension precise, material quality and work completion
Contractor notices to investor to consider and deal with if there is any problem. Contractor deals with by themselves. After discussing with investor, contractor prepares and dismounts
Contractor notices to investor if there is any problem in design document as well as petition method for contractor to consider and approve.
Materials are transferred in work like: cement, reinforcement, sand, rock, brick. Concrete must are tested
Materials for damp- proof must be tested
Materials have resources
At last, all materials must be allowed by contractor and Supervisor.
Once more time, contractor confirms each work quality
 

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1. Reinforcement
Read, look at design drawing: pivot, beam, floor, stair…
Use right type of reinforcement designed in drawings and only using when having certificate
Test dimension of reinforcement
Execution following to restriction, technical standard processed by Vietnam
Reinforcement is processed, installed according to drawings
Workers have grade and experience
Provide equipments fully for reinforcement
Reinforcement in concrete must be tested and accepted by engineer supervisor
Forbid cutting concrete by Acetylene
 

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2. Concrete execution
Concrete execution plays an important role in deciding tonnage burden of work
Check landslide degree in concrete pour place and note in document (responsibility of contractor)
Cast concrete sample in concrete place (sample volume according to restrictions)
Press concrete sample done in laboratory (Age result 7 days and 28 days)
Form of cement, sand, rock and concrete samples are noted full
Concrete pour and concrete beam are done according to restrictions of supervisors, investors and contractors
Concrete meets to standard in Vietnam
Concrete maintenance is done after 24h from pouring time, then, maintain within 7 days continuously.
-Use pump to water
-Use equipments to cover direct light
-Distribute people to maintain everyday
Largest height for concrete is 1.5m. Using pipe to pour concrete when structure is greater than 30cm
Thickness of structure is larger than 60 cm, pour, and beam into each layer of 30 cm thick
Forbid using additive having Canxi
 

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