Feasibility study report for (BUCABAY)road revise en

By Dorothy Jackson,2014-07-08 03:32
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Feasibility study report for (BUCABAY)road revise en

    Chapter 1 General

    1.1 Project Name

    Fiji Buca Bay Road Upgrading project

    1.2 The project introduction and proposed scope

    The road is located in Vanualevu Island , about 30 km apart form the Savusavu City.

    The starting point is 22+306,terminal point is 52+306NAVONU,this is a coastal


    The road bed is constructed, pavement is gravel and with a width of about 6m, in some sections is 4-5m.

    The key scope of works includes: widening the both sides of the roadbed, excavate

    part of the road cutting to ensure the slope to meet the requirements, excavate the drainage, refit the pavement, drainage, culvert and bridge. The base and subbase of pavement, surface double asphalt treatment.

    The existing structures: 8 bridges, 2 of which with a length of 24m,the other is about 12m. The bridge and culvert need to reconstruction. The existing structure can not meet the requirement of the newly built standard.

    1.3 The background of the project

    This is an Asian development bank loan project. Maunsell limited has made a feasibility study for it in May 2006, but due to many factors, the project was terminated. This is a important road connected the SAWUSAWU and the around cities, it is close to the sea, so the travel resource is very rich. The pavement is made of gravel, the bridge is single lane, some of the bridges has reached the designed life time need to repair. The gravel pavement caused so much dust that pollute the environment and increase the wear and tear. Some of the road is to narrow that easy to cause accidents.

    1.4 The general information of the employers country

    1.4.1 General information

    Fiji is an island nation in the South Pacific Ocean east of Vanuatu, west of Tonga and south of Tuvalu. Fiji consists of 322 islands (of which 106 are inhabited) and 522 smaller islets. The two most important islands are Viti Levu and Vanua Levu. The islands are mountainous, with peaks up to 1,300 meters (4,250 ft), and covered with tropical forests. Viti Levu hosts the capital city of Suva, and is home to nearly three quarters of the population. Other important towns include Nadi (the location of the

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international airport), and the second city Lautoka (the location of a large sugar mill

    and a seaport). The main towns on Vanua Levu are Labasa and Savusavu. Other islands and island groups include Taveuni and Kadavu (the third and fourth largest islands respectively), the Mamanuca Group (just outside Nadi) and Yasawa Group, which are popular tourist destinations, the Lomaiviti Group, outside of Suva, and the remote Lau Group. Rotuma, some 500 kilometres (310 mi) north of the archipelago, has a special administrative status in Fiji. Fiji's nearest neighbour is Tonga. The climate in Fiji is tropical and warm most of the year round.

    The population of Fiji is mostly made up of native Fijians, who are Melanesians (54.3%), although a few also have Polynesian ancestry, and Indo-Fijians (38.1%), descendants of Indian contract labourers brought to the islands by the British in the nineteenth century. The percentage of the population of Indian descent has declined significantly over the last two decades due to migration for various reasons. There is also a small but significant group of descendants of indentured labourers from Solomon Islands.

    1.4.2 Politics

    Politics of Fiji normally take place in the framework of a parliamentary representative democratic republic, whereby the Prime Minister of Fiji is the head of government, the President the head of state, and of a multi-party system. Executive power is exercised by the government. Legislative power is vested in both the government and the Parliament of Fiji. The Judiciary is independent of the executive and the legislature.

    Since independence there have been four coups in Fiji, two in 1987, one in 2000 and one in late 2006. The military has been either ruling directly, or heavily influencing governments since 1987.

    1.4.3 Economy

    Fiji, endowed with forest, mineral, and fish resources, is one of the more developed of the Pacific island economies, though still with a large subsistence sector. Fiji experienced a period of rapid growth in the 1960s and 1970s but stagnated in the 1980s. The coup of 1987 caused further contraction. Economic liberalization in the years following the coup created a boom in the garment industry and a steady growth

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    rate despite growing uncertainty of land tenure in the sugar industry. The expiration of leases for sugar cane farmers (along with reduced farm and factory efficiency) has led to a decline in sugar production despite a subsidized price. Subsidies for sugar have been provided by the EU and Fiji has been the second largest beneficiary after Mauritius.

    Urbanization and expansion in the service sector have contributed to recent GDP growth. Sugar exports and a rapidly growing tourist industry with 430,800 tourists

    in 2003 and increasing in the subsequent years are the major sources of foreign

    exchange. Fiji is highly dependent on tourism for revenue. Sugar processing makes up one-third of industrial activity. Long-term problems include low investment and uncertain property rights. The political turmoil in Fiji has had a severe impact on the economy, which shrank by 2.8% in 2000 and grew by only 1% in 2001. The tourism sector recovered quickly, however, with visitor arrivals reaching pre-coup levels again during 2002, which has since resulted in a modest economic recovery. This recovery continued into 2003 and 2004 but grew by 1.7% in 2005 and grew by 2.0% in 2006. Although inflation is low, the policy indicator rate of the Reserve Bank of Fiji was raised by 1% to 3.25% in February 2006 due to fears of excessive consumption financed by debt. Lower interest rates have so far not produced greater investment for exports. However, there has been a housing boom from declining commercial mortgage rates. The tallest building in Fiji is the fourteen-storey Reserve Bank of Fiji Building in Suva, which was inaugurated in 1984. The Suva Central Commercial Centre, which opened in November 2005, was planned to outrank the Reserve Bank building at seventeen stories, but last-minute design changes made sure that the Reserve Bank building remains the tallest.

     Abundance resource of tourism in FIJI Island, Natural sea beach for taking a holiday in SAVUYSAVU, however, the condition of the road to there is not optimistic, road improvement is required.

    1.5 Necessity of the Project construction

    This road is main road connect the city Savusavu. It is near the sea bay. Along the road side have abundance resource of tourism. After the gravel road upgrade to sealing road the car speed will be increased and the time of the travelers will be saved. Also the cars or tucks maintain fee will be saved and the traffic accident rate will be reduced and finally gain the economical progress and reduce the air pollution.

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     In the road net the FIJI government programmed, this road is the most imperative one to be improved, See details in the collects of road net upgrading 1.5-1

    Sheet 1.5-1 The imperative roads programmed by the FIJI government


    Previously Studied road km SECTION

    1.Nabouwalu Dreketi 69.7 N

    2.Buca Bay 30 N

    3.Sigatoka Valley road 14 w

    4.Sawani Serea road 21 CE

    4.5 W 5.Moto roadMotor river to Balevuto

    6.Nadarivatu roadKorovou to Malele 5 W

    7.Nausori mountainous roadQueens road to 10 W Tovatova road

    8.Taveun8t coast roadWairiki to Vuna village 24 TAV

    9 N 9.Nakorotari roadNaduna joint to Wairki/Sueni joint

    5 W 10.Tunalia roadto Arolevu close

    11.Ovalau coast roadLevuka to BuresalaRubble 25 CE mound breakwater embankment wall

    12.Naividamu roadPWD warehouse to Cikobia 12 N road

    10 CE 13.Kings roadNaibita to Nayavu

1.6 Base information of Feasibility study report

    16.1 Investigation alongside

    Site investigation of the existing road had been done by the day of 19th Nov 2008. 1.6.2 In accordance with the documentation offered by the PWD 1.7 Construction content of the Project

    1.7.1 Scope of works

    Contents of this project involving the feasibility study, preliminary design, construction drawing design, Project implementation and As-built and handover of project.

    1.7.2 Scope of design

    The main design work is including subgrade design, pavement design, structure design, bridge design, culvert design, water culvert, etc.

    Specification of design:

    The design speed of 70kph has been adopted in preliminary design for the majority of the road length. The design speed over this section is limited by the vertical geometry of the crest curves where improvement to a higher design speed tandard would be

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    uneconomic. Over the last 10kms or so, the road passes through a hilly section where design speeds of 50 60 kph have been adopted where significant improvement of

    existing horizontal and vertical geometry is not warranted.

    The road is part of the national Main Road network and a pavement width of 7.3 m with two 1.5m shoulders will be constructed. The existing road bed will require some widening to accommodate the increased pavement width and associated side drains. For much of the road, this will be accommodated within the existing 20m road reserve. The road will receive a double coat bituminous seal and shoulders will also be sealed on steep grades and on both sides of superelevated sections.

    1.7.3 Scope of construction

    Main contents: construction of subgrade, water drainage ditch (cut), pavement including sub-base course, base-course and twin face treatment of road face. Bridge construction, in accordance with the site condition, re-built after demolishment or new-built the new bridges at the place where the original bridges located. 1.8 Abstract of study conclusions

    The project belongs to the upgrade road. It is the main road connect between the city town Savusavu and rural. The old one lane bridge has received the design age. It must be replaced the new two lane bridge. At present state, the road is gravel paved with disadvantageous conditions and its imperative to upgrade the road face level. Now

    the project could be implemented for that the problems of land acquisition has been solved.

Chapter2 Construction plan

    2.1 Construction scheme

    2.1.1 General of Project

    The project area is the section of the Buca Bay Road from the end of existing sealed section at the junction with Natewa Bay West Coast Peninsula Road, and extending east towards Buca Bay for ten kilometers. The proposed upgrade consists primarily of increasing the width of carriage way and improving the road surface. The carriageway will be widened 7.3 metres with 1.5 metre paved shoulder.side drains will be installed as required. The road will be sealed with double coat bitumen seal. The proposed horizontal and vertical road alignment closely follows the existing alignment. The design speed for the upgraded road will be 90km/hr. The design speed may be

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lowered to 60km/hr in winding hilly areas.

    The construction activities will entail vegetation removal from immediately adjacent to the road, excavation and disposal of approximately 50,000m3 unsuitable materials from road shoulders and cuttings, placement and compaction of the base, sealing and construction of culvert extensions. Fills and embankment fills will be minor with the most significant fills at the bridge approaches.

    2.1.2 Purpose of project

    Achieving the architecture level of FUJI national standard

    2.1.3 Project implementation schedule and plan

Code Description Duration Note

    Feasibility study report accomplished 3 months Approval involved 1

    Project preliminary design 4 months 2

    Certificate documentation of land 3 months 3

    acquisition and removal offered by the


    Project construction drawing design 5 months 4

    Project implementation 2 years 5

    See details in the Gant chart of road upgrading

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1 page of illustration of Gunter chart

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2.1.4 Project organization

    Team manager of the

    Fiji valley road

    improvement project

    ; Responsible to the

    whole project


    Design team Construction team Arrangement team

    See detail in project 1 team manager 1 team manager construction organization 1 economist 2 route design engineers1 system ; Comprehensive plan of subgrade and pavement ; Accomplish the project the project engineer constructions 2 structure engineers ; Feasibility Study accomplish ; Preliminary design

    ; Construction

    Drawing design Mechanical equipments

    Mechanical equipments means the construction mechanism set for the project implementation, excluding mechanical and electrical equipments installations

    See details in the sheet below, construction equipments on stream

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    Proposed Machinery and Equipment Schedule

    No. Item Model Manufacturer Capacity Quantity

    1.Equipments for roadbed

    31 Excavator EX300-3 Hitachi 25t1.6 m 1

    32 Excavator PC-300 Komatsu 23t1.3 m 1 3 loader-digger WZ30-25 Xugong 1m3 2 4 Bulldozer D8 Cat 2

    35 Loader ZL150C Liugong 1 154kw3.0m 6 Grader CAT 160 2 7 Base course spreader ABG 422 1 8 Roller pad foot vibrating YZ18C SanYi 30t 2 9 Roller smooth vibrating YZ18C SanYi 30t 1 10 Water cart WHZ5100GSS Dongfeng 8000L 2 11 Pneumatic Pick G6 --- --- 5

    6 wheel drive 12 Tipper Truck EQ3208G Dongfeng 10 310m

    6 wheel drive 13 Tipper Truck RD030 Mitsubishi 8 310m

    2.Equipments for culvert and bridge

    14 Crane QY25 Puyuan 25t 1 15 Crane QY16 Puyuan 16 t 1 16 Hoist JS-2 --- 2 t 3 17 Flatbed Truck SGZ5090TPB Puyuan 40T 1 18 Heavy Truck DF141 Dongfeng 5t 2 19 Water Pump --- 2.2kw 3

    Pile Driverfor sheet hammer 200kn 20 Truck crane --- 1 excitation force pile

    3.Equipments for pavement

    Pneumatic Tyred 20 YL16C Xugong 16t 1 Roller

    21 Tandem Roller YZC10 Xugong 10t 1 22 Grader PY160C Tiangong 128.7kw 1

    323 Loader ZL150C Liugong 154kw3.0m 1

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    No. Item Model Manufacturer Capacity Quantity

    6 wheel drive 24 Tipper Truck Mitsubishi 2 10m3 25 Bitumen Distributor KF5100GLQ Kaifeng 8t 1 26 Chip Spreader XLY-16-135 Henan 8t 1

    Asphalt Emulsifying 27 LRMZ6 Tianjin 5-6t/hr 1 Equipment

    28 Tandem Roller YZC10 Xugong 10t 2

    Pavement lineation 29 LHZ9 --- --- 1 machine

    4.Equipments for concrete construction

    30 Concrete Mixer JS-500 --- 500L 1 31 Dosing machine PLD800 --- 6.6kw 1

    3 6 32 Skip car FD0.8 --- 0.8m33 External vibrator SN50 --- 0.8kw 6 34 Internal vibrator ZB110-50 --- 1.1kw 10

    335 Concrete Mixer Truck EQ3102FJ Dongfeng 3.0 m 2 36 Plate vibrator ZW-3 --- 2.2kw 4

    5.Equipments for processing reinforcement

    Electric welding 37 ZXE-400/300*3 --- --- 1 equipment

    Electric welding 38 ZXC30 --- --- 2 equipment

    39 Bar bending machine GW40A --- 40mm 1 40 Bar cutter GJ5-40 --- 5-40mm 1

    6.Equipments for power

    41 Generator 120GF --- 120KVA 1 42 Generator 50GF --- 50KVA 1 43 Generator 30GF --- 30KVA 2

    7.Equipments for transportation

    46 Total station Leica America --- 2 47 Lever China --- 2 Construction material supply

    Material resource: sand and gravel materials of base course layer and sub-base course

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