| 1. PVC Ducting System needs 7 stages of working
while COD only needs 3 working stages. |
| 2. Above dimension is without consideration
of man working space inside the excavated trench,
but only vertical cut. |
| 3. Above dimension does not show slope but vertical
cut from bottom. |
| 4. PVC ducting system needs 3 mobilizations:
|
| |
1) Outer duct in the initial stage.
2) Cleaning, Inspection of installed Outer Duct Line and Inspection
& Test of installed Outer Duct
Line.
3) Inner duct for insertion.
|
