Ethiopian Rural Travel and Transport Program Manuals Training of Trainer Personnel on Environmentally Sound Design and Implementation of Public Works-

Ethiopian Rural Travel and Transport Program Manuals

Training of Trainer Personnel on Environmentally Sound Design and Implementation of Public Works-

Community Roads of the ProductiveSafety Net Program (PSNP)

ERTTP Manuals1. Formulation & Implementation Framework2. Planning Monitoring & Evaluation3. Rural Transport Infrastructure

Development4. Means Of Transport & Service Development5. Non-Transport Interventions & Income

Generating Schemes6. Resource Mobilization & Management

Table of ContentsABBREVIATIONS and ACRONYMS viI. Preface viiI.1. Background viiI.2. Objectives viiI.3. Organization of the manual viii

Chapter 1. ORGANIZATION AND PLANNING

1.1. Community Organization and Participation

1.2. Working with Community1.3. Planning of Project1.4. Operational Planning

1.4.1. Logistic Planning1.4.2. Work Planning1.4.3. Overall Work Plan

Chapter 2. RTI Design Standard, Wereda Mapping And Pricing

2.1. RTI Traffic Survey Method2.2. Wereda RTI Mapping2.3. Low Level Road Design2.4. Quantity Estimation and Pricing2.5. Environmental Impact Assessment2.6. Safety

Chapter 3. Guideline on RTI Construction and Improvement

More detail in a moment

Chapter 3. Guideline on RTI Construction and Improvement

3.1. Setting-Out (Route Alignment)3.2. Sequences of Construction Activities3.3. Improvement of Footpaths3.4. Retaining Structures3.5. Hand Tools and Simple Implements3.6. Construction of Different Types of

Cross Drainage Structures

Chapter 4. RTI Maintenance

4.1. Maintenance Purpose and Causes of Road Deterioration

4.2. Maintenance Need Assessment4.3. Type of road and structure

maintenance4.3.1. Routine maintenance4.3.2. Periodic Maintenance4.3.3. Emergency Maintenance

Chapter 5. Construction and Maintenance by Contractor

5.1. Introduction5.2 Contract Administration5.3 Procurement of Works5.4 Community Contracting

Chapter 3. Guideline on RTI Construction and Improvement

• Execution of road construction and tracks and footpaths improvement

• Guides the woreda technician • Arrangements for the execution of works

and the preconditions to fulfil indicated• Details on the sequence of road

construction.

Chapter 3. Guideline on RTI Construction and Improvement

• Pictorial presentations & illustrations for ease of understanding

• Design & construction of drainage systems & footbridges

• Methods for improving the existing tracks & paths

Chapter 3. Guideline on RTI Construction and Improvement

3.1. Setting-Out (Route Alignment)3.2. Sequences of Construction Activities3.3. Improvement of Footpaths3.4. Retaining Structures3.5. Hand Tools and Simple Implements3.6. Construction of Different Types of

Cross Drainage Structures

Table 3.1 Description of Measuring and Control Aids RANGING ROD Ranging rods are sticks usually 2m long with a diameter of approximately 2.5cm. They are made of various materials (metal, hard plastic, wood). And are usually provided with a pointed metal end. They are painted alternately red and white with black marking at the 1 metre point. The length of the red/white sections is 50cm.

Intersection point of centre line

Figure 3.2 Intersection of two straight lines

A1 A2

A3

A4 A5

A6 B1 B2

B3 B4

B5 B6

A1 A2

A3 A4

A5 A6 B1

B2 B3

B4

B5 B6

Yellow pegs

Figure 3.3 horizontal alignment

Straight

Straight

Straight

Setting Out Horizontal Alignments

Vertical Alignment – Step by Step

Vertical Curve AlignmentStep by Step

Sequence of Construction

Sequence of Construction

Sample Calculations

Slotting Steps

Quarrying

Footpaths

Footpaths

Footpaths

Erosion Control

Bioengineering Erosion Control

Road gradient

(%)

Mitre drain intervals Should

not exceed(metres)

When discharging the water on to piece of farm land

12 40* 20 to 50 meters wherever possible on to a boundary between farms

10 80*8 120*6 160*4 200*

1-2 50**

Table 3.9 Spacing of turnout ditches according to the slope of the ditch

*If exceeded, scouring will occur**If exceeded, silting will occur

Chapter 4. RTI Maintenance

4.1. Maintenance Purpose and Causes of Road Deterioration

4.2. Maintenance Need Assessment4.3. Type of road and structure

maintenance4.3.1. Routine maintenance4.3.2. Periodic Maintenance4.3.3. Emergency Maintenance

Preparation of road Inventories

Assessment of maintenance requirement

Setting of maintenance

requirement

Preparation of maintenance workplan

Implementation of maintenance work

Reporting and monitoring

Figure 5.4 Maintenance Assessment cycle

FEEDBACK

Table 4.3 Checklist for Routine Maintenance Routine Maintenance Activities For Earth & Gravel Roads

RM1. Inspection and removal of obstacles and debris RM2. Cleaning of drainage structures and their inlets and outlets (culverts,

fords, etc) RM3. Repair culvert headwalls, approaches and aprons of fords, etc. RM4. Repair culvert drains/off-shoot drains/catchwater drains and excavation

to original sizes RM5. Cleaning of side drains and excavation to original size RM6. Cleaning of catchwater drains and excavation to original size RM7. Filling of potholes in carriageway RM8. Repair of shoulder and slope erosion RM9. Light reshaping of carriageway (camber formation, corrugation, ruts,

etc.) RM10. Maintenance of erosion controls in drains RM11. Cutting of grass on shoulders and side drains RM12. Clearing bush

Pot-hole & Rut RepairSteps

Training of Trainer Personnel on Environmentally Sound Design andImplementation of Public Works-

Community Roads of the ProductiveSafety Net Program (PSNP)

June 13-24, 2011Ghion Ambassel Hotel

Dessie, Ethiopia