1. Shell erection is faster, reducing the time factor
2. Lower risk of Accidents & Safety achievement is high
3. Easy Access for inspection at all stages
4. Quality of work is improved
5. Welding is unaffected by weather conditions
6. Higher capacity cranes are not needed
7. Special scaffolding arrangement not required
8. As jacks are connected to the tank load by Fail-safe, Slip-grip mechanism, the tank cannot sink even if pump/hose breaks down.