2 clearing and grubbing bvt

Môc lôc VRAMP – CONTRACT PACKAGE RAP/CP6 7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH CLEARING AND GRUBBING TABLE OF CONTENTS CHAPTER I PREPRATION WORKS I PREPARATION WORKS II ARRANGEMENT OF CONS[.]

VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH CLEARING AND GRUBBING 1/ PHUONG THANH TRANCONSIN VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH TABLE OF CONTENTS CHAPTER I : PREPRATION WORKS I PREPARATION WORKS II ARRANGEMENT OF CONSTRUCTION SITE PLAN III MOBILIZATION OF MANPOWERS AND CONSTRUCTION EQUIPMENT CHAPTER II: CLEARANCE ,GRUBBING I PRESERVATION OF PROPERTY II CLEARING AND GRUBBING III DISPOSAL OF CLEARED MATERIAL IV MAIN EQUIPMENTS 2/ PHUONG THANH TRANCONSIN VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH CHAPTER I : PREPRATION WORKS I PREPARATION WORKS Construction signs The contractor shall arrange guards 24/24 hours, with installation of the project information signs that shows information about the project, size and content of signs, which are agreed by the Engineer and the Employer Electricity supply Contractor shall contact with local electricity company to purchase electricity and install the power stations in accordance with demand In case of electric power is not available for the construction, the contractor will use generators to ensure continuous construction At the construction site, the circuit breakers with cover for protection of electrical system will be installed and electric lines will be on posts to contact with construction areas, and also safety ground wires shall be installed in accordance with current safety standards of electricity Water supply: Contractor shall contact to local water suppliers to ensure enough clean and standard water for construction and living in site camping, offices It is needed to build a number of small auxiliary tanks for construction services Communication and information: The contractor will fix telephones, fax machines at the Site management Board and at the construction groups to ensure continuous communication 24/24h with all the related parties Fire fighting system : To prevent and handle fire and explosion which may occurs, some fire extinguishers at the needed points shall be equipped to dry out fires Officials inspecting the fire shall be assigned every day Prepare for construction materials The Contractor shall make the planning scheme, making purchasing orders with quarries and sources of materials such as: soil, sand, stones, steel, cement, and asphalt The Contractor will have material samples tested for the technical specifications in accordance with design requirements, and submit the Engineer and they can only be used for the works when having been approved by the Engineer and the Employer Contract Package is located within the city of Can Tho, located next to the Hau River is very convenient for collecting the material The material is expected to be transported by road associated with the river 3/ PHUONG THANH TRANCONSIN VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH Selection of working groups: By studying the topographical surveys of the site, based on work quantity, based on the ability to mobilize equipment and manpower, to facilitate the gathering of vehicles as well as equipment and materials materials, accelerating the construction schedule so as to meet the requirements of progress and quality of the work, the Contractor shall pick up some groups for construction as specified in the Workforce Mobilization Plan II ARRANGEMENT OF CONSTRUCTION SITE PLAN The contractor will to establish the Site management Board for construction nearby Km6+000 The Executive Board will be organized right next to the road for ease of movement and execution At the Site management Board, we shall arrange housing and accommodation for executive chief, staff, health services; housing for workers, guarding house; kitchen; toilets; warehouse for gathering materials, equipment; yards for materials, machinery, yard for casting structure; electrical and water systems for construction activities, etc III MOBILIZATION OF MANPOWERS AND CONSTRUCTION EQUIPMENT Manpower: The contractor will assign the key staff with corresponding professional qualifications, experience and good health to undertake the work For technical workers, drivers, machine operators: the skilled, experienced construction labor with high productivity, consistent with work requirements to achieve effective highest quality as well as work progress will be assigned For the unskilled workers: Take advantage of the existing force of the Contractor, if in shortage, the Contractor will hire additional employees of the locality to ensure and create jobs for local workforce seasonally Construction equipment and machineries The contractor shall arrange the construction equipment and machinery with good quality for project implementation All kinds of construction equipment have been tested and registered for licensing activities by relevant agency When mobilized for the project must be approved by the Engineer Use of construction equipment with the best performance, ensure high productivity, good quality, low cost, and mitigate the hard work for the employees 4/ PHUONG THANH TRANCONSIN VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH Chain method for construction will be applied based on characteristics of the construction, construction technology, construction schedule, volume and other conditions Regular and timely adjust the workforce of equipments and labor in order to ensure consistency, balance and facilitate the application of advanced construction technology Constantly improve the management level, technical level and repair and well periodic maintenance of construction equipment and implement Construction equipment and materials for construction are organized by centralized management and stability in the construction teams, as well as highly specialized When management and use of materials, construction equipment (including: using, engineering maintenance, maintenance, transportation) must comply with the technical documentation of manufacturers Assignment of drivers and construction machine operators must match with trained professions and worker levels as in accordance with the regulations for type of vehicles, construction machine specifically The vehicles, construction machines put into operation must ensure the technical reliability and labor safety For these vehicles, construction machines must be registered for safety, before being put into execution, must fulfill the registration inspection under the provisions of the competent authorities of The technical maintenance will be responsible by specialized team 5/ PHUONG THANH TRANCONSIN VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH CHAPTER II: CLEARANCE, GRUBBING I Preservation of Property Existing highways, improvements, facilities, adjacent property, utilities, services, and trees and plants designated for preservation shall be protected from injury or damage In order to reduce the risk of erosion no topsoil shall be removed from the areas outside the limits of earthworks Any topsoil outside these limits, which is inadvertently removed during clearing and grubbing operations or otherwise, shall immediately be replaced by the Contractor at its own expense Trees outside the construction width but within the proposed right-of-way having a trunk girth of more than 450 mm at a point 600 mm above the ground shall not be cut down without the prior approval of the Project Manager Those trees that are not to be removed shall be protected from injury or damage resulting from Contractor's operations II Clearing and Grubbing Setting out and staking of each cross section as the approved construction method statement, mark the locations, limiting the areas to clear trees, cut grasses, excavate roots of trees, remove away debris and then submit the Engineer for approval before conducting the next work The clearing and grubbing shall consist of clearing the designated areas of all trees, down timber, snags, vegetation, rubbish and objectionable material and shall include grubbing stumps and roots and disposing of all material resulting from the clearing or grubbing It shall also include the demolition removal and disposal of structures that obtrude into or encroach upon or obstruct the work, except where provided for otherwise Also included in this work shall be the removal of loose pavement material, road signs, right-of-way markers, kilometre stones, guide posts and all other incidentals within the limits of construction Using the measures to ensure effective safety and warnings for the areas of construction and arrange lights at night if necessary Any debris shall be removed or buried in the right places accepted by the Engineer and the Employer within the range of the project and filled up at least 30cm above to create the shape and visible slope The lower architecture of the old works (if no other requirements), which needs to be destroyed up to the natural stream bottom, the other structures outside the range of natural water flow will be excavated to at least 50cm below the natural soil surface Outside the limits of the earthworks, and under embankments trees and stumps more than 1.5 metres in height shall be cut to a level not more than 300 mm 6/ PHUONG THANH TRANCONSIN VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH above ground level and not less than 450 mm below the embankment slopes and everything else to ground level In cut areas clearing shall include the removal of stumps and roots exceeding 80 mm in diameter, to a depth of 450 mm below the finished surface except that in rounding areas at the tops of cut slopes they may be cut flush Grubbing shall be carried out on the area of embankment foundations where the embankment height is less than 1.5 metres Grubbing shall consist of the removal and disposal of topsoil, stumps, roots, etc., to a depth of at 150 mm below ground Where existing embankment is to be raised or widened, all vegetation and topsoil shall similarly be completely removed from shoulders, slopes and ground under the widening before the operations of actual widening can be commenced Where roadway excavations are to be made, and where ditches, streams and rivers, are to be diverted, all vegetation, roots stumps and the like shall be completely removed and placed outside the excavation area concerned before the excavation works can be commenced The construction ensure that cleaning and grubbing will be carried out within the construction area, does not affect outside area Besides the "excavation and relocation of works and obstacles" will comply with all the provisions of the technical instructions III Disposal of Cleared Material All other timber except timber to be used and all brush, stumps, roots, logs, and other refuse from the clearing and from the grubbing operations shall be burned, provided that, when permitted in writing by the authority having jurisdiction over the area through which the highway is being constructed, large stumps may be disposed of without burning at locations out of sight of the roadway Piles of material for burning shall be placed either at or near the centre of the cleared area, or in adjacent open spaces where no damage to trees or other vegetation shall occur Should the burning precede the construction operations, the material piles may be placed in the centre of the right of way; otherwise the material piles shall be placed in the most convenient location at the side of the right of way and beyond slope line where they may be burned without damage to the surrounding trees or adjacent property All burning shall be done in conformance with regulations and at such times and in such manner as to prevent the fire from spreading to areas adjoining the right of way All fences, buildings, structures, and encumbrances of any character, except those to be removed by others, upon or within the limits of the right of way, shall be removed by the Contractor and carefully placed on the abutting property or 7/ PHUONG THANH TRANCONSIN VRAMP – CONTRACT PACKAGE:RAP/CP6-7 – MAINTENANCE OF NH6 FROM KM78÷KM98 IN HOA BINH otherwise disposed of as indicated on the drawings or as directed by the Project Manager IV Main Equipments: Main equipments include: No Equipments Units Quantity Bulldozer ≥140 cv nos 01 Front Loader ≥2,4m3 nos 01 Excavator 1,25m3 Nos Vibrating Roller 25ton nos 10 Steel Wheel Roller 10– 12 ton nos 11 Tired Roller nos 13 Dump Truck ≥10 tons nos 23 Laboratory Lab Survey Equipments: - Total Station : 02 nos - Surveyor’Level : 04 nos - Leveling pole, Mirror, rod : 04 nos - Meter - accuracy 0,1 mm : 02 nos - And full sets of test devices 8/ PHUONG THANH TRANCONSIN