1. |
Preparation Stage:
| a. |
Application of COD reduces volume
of excavation by reducing width of trench, as no individual
piece-by-piece duct connection works in the trench are
required. In addition, it reduces working space at job
site as well as transportation.
|
| b. |
Application of COD reduces damaging risk of existing
underground infrastructures by reducing trench dimensions. |
| c. |
Application of COD reduces disposal of excavated soil
owing to less excavation.
|
| d. |
No fine leveling work of trench bed is necessarily required
but rough leveling.
|
| e. |
No sand padding on trench bed is necessarily
required owing to high flexibility and Compressive Load
(292kgs/§²).
|
|
2. |
Installation Stage: Application of COD
offers the following advantages.
| a. |
No piece-by-piece
individual connection works in the trench are required,
coupling works may be done on the ground if required.
|
| b. |
Great saving of construction period.
|
| c. |
Great saving of traffic troubles.
|
| d. |
Absolutely no inner duct insertion process is required.
|
| e. |
Keeps job site clean from bundles
of mobilized materials.
|
| f. |
No dual mobilizations of materials
are required.
|
|
3. |
Finishing Stage: Application of COD offers
the following advantages.
| a. |
No risk of damaging
the installed duct by compaction or heavy traffic above
the trench after completion owing to good Compressive
Load of COD.
|
| b. |
Quick removal of temporary site facilities or mobilized
materials from job site (COD reel may be released as mounted
on trailer or truck).
|
|
4. |
Maintenance Stage: Application of COD
offers the following dvantages. The following features of COD
enables to save maintenance cost upon completion of installation.
| a. |
Free from water
or humidity infiltration.
|
| b. |
Better fire resistance compare to the conventional PVC
duct system.
|
| c. |
Better Compressive Load (approx. 3 times of PVC).
|
| d. |
Easy insertion & replacement of cables owing to
absolutely no twisting risk but perfect alignment of the
inner ducts owing to welded & built-in single body.
|
|
|
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