Route and the managementt Selection.ppt
- 1. Discussion On Route Selection
- 2. Outline Outline Defining Route Selection Data Collection (Desk study followed by field reconnaissance) Defining project goals and objectives Identification of possible Alternative routes Preliminary study and design of alternative routes for comparison Multi-level criteria analysis for route selection
- 3. Route selection is a Process of Selecting the best and feasible alternative Route of a Project. It have 4 essential Steps Project Identification Selection of route Corridor Identification of route options within the corridor Selection of the preferred route option Route selection:
- 4. Data Collection Data Collection Data collection is a process carried out both by desk study and field reconnaissance. The desk study consists of identifying sources of information, collecting necessary information and analyzing and summarizing the identified and collected data. Sources of information Type of information Relevant information Client RFP Contextual information and control points Design Documents Centerline data and design data Existing Control Points Project Second order control points Traffic Data Historical Traffic Data Regional Authorities (including Roads) Design Documents Previous Design, previous Study, and other contextual information Master plans Regional and local master plans EMA Maps Topographic and Aerial Photographic maps First Order Control points Existing EMA points Web sites Satellite imagery web sites Satellite imagery maps
- 5. Data Collection (Desk study) Data Collection (Desk study) Transport data Existing Road network in the vicinity of the project Existing Travel demands (for all modes) to Identify any capacity Existing crash data to Identify any safety problems, or potential safety problems Existing foot paths Social data Towns and villages Population of towns and villages Climate data Temperature, rainfall and other metrological data Land use data Types and coverage of land use like cultivated lands, forested lands The cadastral layout and ownership patterns; Topographical data Terrain classification of the project area, Difficult terrain conditions like escarpments, vertical overhanging cliffs Important topographical control points like ridge tops, saddles, passes Geomorphology of the area Drainage data Major river crossings Existing major and minor drainage structures Locations of natural gorges Flood plains and marshy areas Environmental data Existing non-renewable natural resources, and Important Forests Sensitive environmental areas like natural parks Geotechnical information Types of geotechnical formations Land slide areas Aesthetic data Scenic outlook areas such as parks and cultural heritages Cultural data Any cultural information Historic data Any historic information
- 6. Data Collection (Desk study) Data Collection (Desk study) This information shall be summarized on topographical and satellite imagery maps, plans and tables to build up an understanding of the site and used to underpin the design trade- offs that will invariably follow. The summarized information is also used for verification during field reconnaissance.
- 7. Data Collection (Field Reconnaissance) Data Collection (Field Reconnaissance) During field reconnaissance ( may be vehicular and often walk over) Verification and amendment of desk study information Collection of additional data and information shall be conducted The field reconnaissance consists of visual inspection of the site and conducting of Early Local Issues Meeting with the officials and the public in the localities Local information may be gathered by conducting initial public outreach which aims at reaching a broad spectrum of interested parties through early informational meeting and continuous meetings at strategic milestones
- 8. Data Collection (Field Reconnaissance) Data Collection (Field Reconnaissance) Local issues meeting This is a formal meeting with officials at regional, wereda and kebele levels primarily aimed at Gathering of local and regional comments. Fostering a working relationship with local community members To evaluate the comments and incorporate into the project planning Individual outreach meetings There may be key individuals, local officials, agencies, advocacy groups, and “Yager shimagiles” who may be worth seeking out for valuable input (often identified at the local issues meeting). Any significant issues concerned with understanding of project issues, opportunities and constraints.
- 9. Data Collection (Field Reconnaissance) Data Collection (Field Reconnaissance) Road users data Vehicular traffic patterns, compositions and characteristics Identifying traffic count locations and types of counts Pedestrian volumes, composition, behavior and characteristics Non- motorized traffic types (carts, pack animals, bi cycle), volumes, composition and characteristics Other unavoidable road users like cattle, camels and their characteristics Availability of public transport Behavior or characteristics of drivers Passenger characteristics and type and volume of fright transport Transport data Identifying other roads in the network Existing Travel demands (for all modes) to Identify any capacity Existing crash data to Identify any safety problems, or potential safety problems Additional foot paths Social data Any un-identified towns and villages Current population of towns and villages Climate data Any un-measurable metrological data such as fog, common type of rains and their impact on the driving task Land use data Current types and coverage of land use like (open fields, forest and forest type if known, agricultural land, town, village, city, or commercial corridors); Current cadastral layout and ownership patterns; Topographical data Visual inspection of the general topography Identify and locate difficult terrain conditions like escarpments, vertical overhanging cliffs identify and locate important topographical control points like ridge tops, saddles, passes Visually inspect the geomorphology of the area Drainage data Major river crossings Additional existing major and minor drainage structures Locations of natural gorges Flood plains and marshy areas Property of surface material Visual inspection of surface material Environmental data Exact locations of existing non-renewable natural resources, and Exact locations Important Forests Limits of sensitive environmental areas like natural parks Geotechnical information Types of geotechnical formations Current land slide areas, and types of slides Aesthetic data Prominent views and vistas along the road, designated scenic roads and areas Cultural data Any cultural information Historic data Designated historic districts Road maintenance data The history, competency and funding of road maintenance in the region Utility information Existing utility information in towns Property of surface material Visual inspection of surface material Local and regional policies Designated growth areas, unique natural areas, agricultural conservation districts, and areas designated for future access
- 10. Project Goals and Objectives Project Goals and Objectives From information obtained during data collection and the input received at the Early Local Issues Meeting (as discussed below), the team will define goals and objectives for the project consistent with the plans and policies of the state and local community. This statement will be the crux of the definition and evaluation of alternatives and the development of the planning and route selection.
- 11. Project Goals and Objectives Project Goals and Objectives The project goals and objectives include basic information about the project road expressed in terms of Set of alternative project control towns, and villages Functional classification of the road which is related to the most common types and purposes of travels and trips Geometric design standard of the road: which is related to the forecasted traffic volume (expressed in terms of AADT), and economical feasibility on the basis of the proposed standard. The geometric standard determines the design speeds, roadway dimensions (horizontal and vertical alignment, and cross section elements) and generally the physical characteristics of the roadway. Classification by type of area and corresponding types and requirements of road users. Different objectives shall be set for the different types of area in the project section (rural, urban and peri-urban, etc)
- 12. Control Points Start End Length (m) Name Type of settlement 0+000 1+400 1400 Abomsa town Urban 36+850 38+650 1800 Aseko town Urban 83+800 85+300 1500 Bedeyi town Urban 102+500 103+121 621 Cheleleka town Urban
- 13. Defining possible alternative routes Defining possible alternative routes Ideal Case Ideal Case
- 14. Defining possible alternative routes Defining possible alternative routes Additional towns and villages Additional towns and villages Nejate Dibu
- 15. S1 S2 S3 S4 Defining possible alternative routes Defining possible alternative routes Segments Segments Nejate kus
- 16. Having identified alternative routes in the four segments of the project described above, the project road is divided in two sections 1) Section A: Aseko – Bedeyi 2) Section B: Bedeyi Chelelka Afterwards, the possible combinations of the alternatives in each section have been established Defining possible alternative routes Defining possible alternative routes
- 17. Section A: Alternative A1: A-C-D-E Alternative A2: A-C-F Alternative A3: A-B-D-F Alternative A4:A-B-E Section B: Alternative B1: G Alternative B2: H Defining possible alternative routes Defining possible alternative routes Nejate Kus Alternative routes in the sections Alternative routes in the sections
- 18. Preliminary Screening of Possible alternatives The alternative routes are then evaluated and screened giving due consideration to the towns and villages in the TOR and identified in consultation with the Weredas’ officials and community elders to limit their number to a maximum of three for ease of analysis, comparison and selection. Accordingly, Alternative A-1 connect all the towns and villages identified above except Nejate and Kus villages including Aseko town, Irecha vilage, Chefe kebele, Teleta town, Dibu village, and Bedeyi town, Considering this, the alternative is considered as feasible alternative route for comparison and selection. Alternative A-2 connect all the towns and villages identified above except Dibu village including Aseko town, Irecha vilage, Chefe kebele, Teleta town, Nejate village, Ata village and Bedeyi town, Considering this, the alternative is considered as feasible alternative route for comparison and selection. Alternative A-3 connect all the towns and villages identified above including Aseko town, Irecha vilage, Chefe kebele, Dibu village, Teleta town, Nejate village, Kus village and Bedeyi town, Considering this, the alternative is considered as feasible alternative route for comparison and selection. Alternative A-4 doesn’t connect Teleta towns, Nejate village and Kus village identified above including Aseko town, Irecha vilage, Chefe kebele, Dibu village and Bedeyi town. Considering this, the alternative isnot considered as feasible alternative route for comparison and selection. Defining possible alternative routes Defining possible alternative routes
- 19. Section A: Alternative A1: A-C-D-E Alternative A2: A-C-F Alternative A3: A-B-D-F Section B: Alternative B1: G Alternative B2: H Defining possible alternative routes Defining possible alternative routes Nejate Kus Screened Alternative routes in the sections for comparison Screened Alternative routes in the sections for comparison
- 20. Preliminary study and design shall be conducted in a context sensitive design approach; which includes Preliminary studies Preliminary soils and materials study Preliminary geotechnical study Preliminary hydrology/hydraulics study Preliminary social and administrative study Preliminary environmental impact assessment study Preliminary structures and drainage study Preliminary geometric study Preliminary traffic studies Preliminary topography surveying? Preliminary design and cost estimation Preliminary geometric design Preliminary pavement design Preliminary structures design Preliminary B.O.Q and cost estimation Preliminary study and design of Preliminary study and design of alternative routes alternative routes
- 21. Multi-level criteria analysis Multi-level criteria analysis Primary Criteria Secondary Criteria Weight Tertiary Criteria Section A Section B A1 Score A2 Score B1 Score B2 Score Engineering Road length (km) 5 20 5 45.19 2.2 29.36 3.5 20.3 5 Topography 3 Flat (%) 27.5 0.83 13.9 0.42 42.8 1.28 60.7 1.82 Rolling (%) 72.5 1.45 52.9 1.06 57.2 1.14 39.3 0.79 Mountain (%) 0 0 33.2 0.33 0 0 0 0 Total Earthworks Cost (Million Birr) 3 38.5 3 75.9 1.5 49.2 1.5 23.9 3 Total Pavements Cost (Million Birr) 3 40.1 3 84.8 1.4 57.7 2.0 39.0 3 Total Culverts and Bridges Cost (Million Birr) 3 57.4 3 111.3 1.5 57.6 2.2 41.2 3 Availability of construction materials (* G/M/P) 3 G 3 M 2 G 3 M 2 Geo-hazards (** F/I/M) 5 F 5 I 3 F 5 F 5 Total cost (Million Birr) 5 222.6 5 412.5 2.7 284.8 3.5 197.5 5 Sub-total 30 29.28 16.11 23.12 28.61 Social Community Access (G/M/P) 6 G 6 P 1 G 6 P 1 Development potential (G/M/P) 3 G 3 M 2 G 3 M 2 Public transport (G/M/P) 5 G 5 P 1 G 5 P 1 Resettlement (F/I/M) 4 F 4 F 4 F 4 F 4 Severance (F/I/M) 2 F 2 F 2 F 2 F 2 Cultural heritage (F/I/M) 4 F 4 F 4 F 4 F 4 Road Safety (G/M/P) 3 M 2 M 2 M 2 M 2 Pollution (****L/M/H) 3 M 2 M 2 M 2 M 2 Sub-total 30 28 18 28 18 Environmental Extracted from Chapter Four of this report 20 18.75 17.75 18.75 16.5 Sub-total 20 18.75 17.75 18.75 16.5 Economic Viability (EIRR (%)) 7 10.8 7 5.53 3.5 9.4 7 11.1 6 Road User Benefits (travel time saving) 3 G 3 M 2 G 3 M 2 Sub-total 10 10.0 5.5 10.0 8.0 Administrative Sustainability (G/M/P) 5 G 5 P 1 G 5 G 5 Strategic Impact (G/M/P) 5 G 5 P 1 G 5 M 3 Sub-total 10 10.0 2.0 10.0 8.0 Total 96.03 59.36 89.87 79.11