group appraisal of sites in the field: 2 hours on site
a appraisal of site.
b estimation of critical site parameters.
c initial design of bioengineering works required.
d initial planning of work requirements.
preparation of presentations at Training Centre: 3 hours
a write-up detailed assessment of the site.
b preparation of bioengineering proposals.
c estimation of materials/resources required.
d costing works, including plant production
e scheduling of all works for preparation and implementation.
f preparation for presentation in Session 92.
presentation on each group's site: 30 minutes per group
you will be working in four groups. each group will be given a different site to assess. assume that you have just arrived in this Division and that your group has been assigned the task of stabilising your site. establish what you need to do, assuming that budgets and targets are not a constraint.
you should assess your site in as much detail as possible and make some estimate of the area and volumes involved in treatment. consider the items in this checklist.
site history
- what is the material?
- what external factors are, or were affecting the site?
- what was the original cause of failure/erosion?
- what are the active erosion processes at work in each part of the site?
- how long ago did it start to become unstable?
- what is the drought factor for the site?
past stabilisation attempts (if any)
- have there been any attempts to stabilise it so far?
- what were the treatments? are there signs of anything that failed?
- what was successful in terms of stabilisation/erosion control?
- how appropriate were any bioengineering treatments?
- what about the civil structures? are they strong enough? are they big?
the way forward
- what needs to be done now?
- how can the site be broken down into different segments?
- what treatment is needed for each segment?
- what preparation works are required?
- resources will be needed to achieve this?
- what are the quantities involved?
- what are the costs of these works?
- how should the works be scheduled?
- are these measures the best possible solution in terms of cost
and effectiveness?
in preparing your group's presentation, you should note the following:
- the presentation must be for people who have not seen the other sites.
- each group must describe its site (with sketches).
- you should say what rehabilitation measures are proposed.
- you should define the materials and resources required.
- you should prepare a costing for the work?
- you should state the schedule for completing the works.
- do not forget include the nursery preparation of pants for
the bioengineering works.
- you must be ready to justify the your proposal
you will be given 15 minutes to make your presentation. this will be followed by 10 minutes discussion on the proposal.
rainfall in the Mugling area. it may help you to know the average rainfall for the nearest station to the site. the table below gives the average rainfall in mm over a twenty year period.
station: Gorkha
| Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Total |
| 22 |
16 |
32 |
66 |
157 |
358 |
432 |
398 |
203 |
65 |
15 |
12 |
1,776 |
