 | |
Agroforestry
Extension
Resources
| | |
 A108 Roadside Bio-engineering. Site Handbook
John Howell 1999. His Majesty's Government of Nepal. ISBN 1 86192 170 5
Bio-engineering is defined in this context as "the use of living plants for engineering purposes",
and so parallels and/or complements
agroforestry techniques that are principally concerned with soil conservation. Although the bio-engineering
described in this handbook is
concerned with stabilising motor roads in the mountainous areas of Nepal, it can have application on
farm tracks and alongside fields in
steep terrain. This manual is attractively and clearly produced for field use, and is well illustrated.
It is based on extensive practical
experience in Nepal. See also
A109
 
CONTENTS:
Acknowledgements
Introduction
Safety Code of Practice for Working on Slopes
SECTION ONE
Stabilising slopes with civil and bio-engineering
1.1 Problems of slopes and their solutions
1.2 Steps for the stabilisation of slopes
Step 1 Make an initial plan
Step 2 Prioritise the works
Step 3 Divide the site or slope into segments
Step 4 Assess the site
Step 5 Determine civil engineering works
Step 6 Choose the right bio-engineering techniques
Step 7 Design the civil and bio-engineering works
Step 8 Select the species to use
Step 9 Calculate the required quantities and rates
Step 10 Finalise priority against available budget
Step 11 Plan plant needs
Step 12 Arrange implementation and prepare documents
Step 13 Prepare for plant propagation
Step 14 Make the necessary site arrangements
Step 15 Prepare the site
Step 16 Implement the civil engineering works
Step 17 Implement the bio-engineering works
Step 18 Monitor the works
Step 19 Maintain the works
SECTION TWO
Civil engineering techniques
2.1 Retaining walls
2.2 Revetment walls
2.3 Prop walls/Dentition
2.4 Check dams
2.5 Surface and sub-surface drains
2.6 Stone pitching
2.7 Wire bolster cylinders
2.8 Other civil engineering techniques
SECTION THREE
Bio-engineering techniques
3.1 Planted grass lines: contour/horizontal
3.2 Planted grass lines: downslope/vertical
3.3 Planted grass lines: diagonal
3.4 Planted grasses: random planting
3.5 Grass seeding
3.6 Turfing
3.7 Shrub and tree planting
3.8 Shrub and tree seeding
3.9 Large bamboo planting
3.10 Brush layering
3.11 Palisades
3.12 Live check dams
3.13 Fascines
3.14 Vegetated stone pitching
3.15 Jute netting (standard mesh)
3.16 Jute netting (wide mesh)
3.17 Mulching
3.18 Vegetated gabions
3.19 Live wattle fences
3.20 Hydro-seeding
Production of bio-engineering plants
4.1 Nursery establishment
4.2 Components of a nursery
4.3 Propagation of grasses
4.4 Propagation of shrubs and trees
4.5 Propagation of bamboos
4.6 Nursery management
4.7 Seed collection, treatment and storage
4.8 Assessing the quality of bio-engineering nurseries
Maintenance of bio-engineering
5.1 Introduction
5.2 Planning the maintenance of bio-engineering and other roadside vegetation
5.3 Routine bio-engineering maintenance activities
5.4 Preventative maintenance of roadside vegetation
5.5 Liaison with rural road neighbours
Annex A Site assessment pro forma
Annex B Full lists of species for bio-engineering in the road sector
Annex C Nursery registers
Glossary
Index of .figures
Index of boxes
| 
