REPUBLIC OF ZAMBIA Road Development Agency Great North Road Rehabilitation (T2) – Mpika to Chinsali, Zambia Lot 1 - Km 4+100 to Km 86+770 Mpika to Shiwan’gandu Junction (D53/T2 Junction) – 82.7 km Financially supported by the European Investment Bank and The European Union BIDDING DOCUMENT Part 2: Employer’s Requirements Section VI Requirements [insert month and year] Bidding Document, Part 2 Section VI: Requirements VI-1 PART 2 – EMPLOYER’S REQUIREMENTS Section VI. Requirements This Section contains the Specification, the Drawings, and supplementary information that describe the Works to be procured. Bidding Document, Part 2 Section VI: Requirements VI-2 SCOPE OF WORKS The general items of work to be executed under this Contract include the following: (a) Establishment and, on completion of the Contract, removal of the Contractor's camp, plant, materials and personnel; (b) Establishment and, on completion of the Contract, removal of the Engineer's offices, laboratory and housing; (c) The provision of potable water supply for camps, offices, housing, and construction; (d) Confirmation and/or re-establishment of beacons and benchmarks as necessary as well as setting out of the Works; (e) Confirmation of the cross sections prepared at 20 metre intervals along the road in order that these can be used to enable the measurement of earthwork quantities by the Engineer for payment purposes; (f) The execution of all works as detailed in the Specifications and the Bills of Quantities and shown on the Drawings; (g) Accommodation of traffic; (h) Demolition of dwellings within the road reserve and removal of debris and resulting material; (i) Construction of boreholes at locations to be identified by the Engineer and inclusive of drilling, casing, gravel packing, concrete head-works, provision and installation of approved hand pumps, all testing, development, and disinfection; (j) Testing of materials and workmanship; (k) Implementation of environmental impact mitigation measures; (l) Provision of support to and facilities for the service providers contracted to the Employer for the implementation of social issues programmes, in particular those relating to HIV/AIDS and TB awareness, skills training, gender sensitization and mainstreaming, local subcontracting and employment, and road safety awareness campaigns; (m) Care of the works until the issue of the Taking-Over Certificate and rectifying defects during the Defects Notification Period; Without derogating from the generality thereof the roadworks in the Contract comprise the following: (a) Clearing and grubbing; (b) Opening, operating and reinstatement of borrow and quarry areas and the provision of associated haul roads; Bidding Document, Part 2 Section VI: Requirements VI-3 (c) Cut to spoil, cut and borrow to fill and roadbed preparation; (d) Widening and strengthening of the existing road. This may include actions such as: roadbed preparation, removal of unsuitable material, benching, cut, fill, and the construction of selected layers, subbase, base and surfacing as well as full or partial removal of the existing road prism where no longer required. The subbase shall be cement stabilized and the base shall be granular (G2); (e) Construction of imported selected layer in the widened portion of the pavement; (f) Construction of imported subbase in the widened portion of the pavement; (g) In-situ recycling/processing of a mixture of existing base, existing surfacing and imported material with cement to form a stabilised sub base; (h) construction of a Hot-Mix Asphalt wearing course; (i) Construction of a Hot Mix Asphalt base course; (j) Construction of drainage elements such as concrete kerb/channel combinations, down chutes, concrete lined drains, pipe culverts, inlet/outlet works to same, cut-off drains, berms and dykes, mitre drains etc. (k) Extension of existing pipe culverts; (l) Removal and replacement of existing culvert pipes; (m) Erosion protection works such as stone pitching, gabions, bolsters etc; (n) Supply and installation of guardrails, guide posts, kilometre marker posts, road signs, road studs and road markings; (o) Construction of road intersections, accesses, bus stops, lay-byes, parking areas and a single arrestor (run-off) facility; (p) Finishing of the road and road reserve; (q) Rehabilitation of borrow pits and access roads; (r) Construction of traffic calming infrastructure in areas of habitation; (s) Demolition and removal of debris from structures within the identified 100m road reserve; and (t) Provision of solar powered street lighting at designated locations. Bidding Document, Part 2 Section VI: Requirements VI-4 SPECIFICATIONS STANDARD SPECIFICATIONS The Standard Specifications are provided in these Bidding Documents in the form of a CD. The following Special Specifications modify the Standard Specifications and take precedence over them. The articles in the Special Specifications are numbered in the sequence of articles in the Standard Specifications. When references appear in the Special Specifications to articles in the Standard Specifications, then both articles must be read together but the amendments in the Special Specifications shall take precedence over the Standard Specifications. Additional articles may also be included and numbered consecutively to follow the articles in the Standard Specifications. Where the text in the Special Specifications is silent on the articles of the Standard Specifications, then the articles of the Standard Specifications apply. In case of conflict between the text of any article of the Standard Specifications, and the text of any article of the following documents included in Parts 1 and 3 of the Bidding Document: Instructions to Bidders General and Particular Conditions These documents shall take precedence over the Standard Specifications. Bidding Document, Part 2 Section VI: Requirements VI-5 SPECIAL SPECIFICATIONS CONTENTS 1. PREFACE TO THE SPECIAL SPECIFICATIONS .................................. 11 2. APPLICABLE ACTS AND ORDINANCES ................................................ 11 3. PROJECT DESCRIPTION ........................................................................... 12 A1. GENERAL DESCRIPTION OF THE PROJECT ............................................ 12 A1.1 Introduction ....................................................................................................... 12 A1.2 Current Road Pavement Condition ................................................................... 13 A1.3 Description of Work ......................................................................................... 13 A1.4 (e) Materials investigation and pavement design .............................................. 14 A1.5 (f) Main Quantities ............................................................................................ 15 A1.6 (g) Construction Period ..................................................................................... 16 A2. DESCRIPTION OF THE SITE ........................................................................ 16 A2.1 Location ............................................................................................................ 16 A2.2 Physical characteristics ..................................................................................... 16 A2.3 Boundaries of the Site ....................................................................................... 17 A2.4 Camp sites ......................................................................................................... 18 A2.5 Availability of services ..................................................................................... 19 A2.6 Facilities for others ........................................................................................... 19 A3. ACCOMMODATION OF TRAFFIC ............................................................... 19 A4. DETAILED DESCRIPTION OF THE PROJECT ........................................... 21 A4.1 General .............................................................................................................. 21 A4.2 Roadworks ........................................................................................................ 22 A4.3 Services ............................................................................................................. 23 A4.4 Pavement design ............................................................................................... 24 A5. SETTING OUT ................................................................................................. 25 A5.1 General .............................................................................................................. 25 A5.2 Construction drawings ...................................................................................... 26 A6. NATURAL MATERIALS ................................................................................ 26 A6.1 Preliminary remarks .......................................................................................... 26 A6.2 Gravel or soil ..................................................................................................... 27 A6.3 Stockpiling ........................................................................................................ 27 A6.4 Borrow pits in cultivated land ........................................................................... 28 A6.5 Aggregates for concrete and surfacing ............................................................. 28 A6.6 Water for construction