Sectional Tank Installation Guidelines
The tank type determines the type of foundation that may be used for installation. Base guidelines are provided for each tank ordered.
Externally flanged base tanks
Option 1 – Solid bearers
Concrete dwarf walls – placed at 1000mm centres for metric tank panels. As space is required underneath the tank, externally flanged base tanks must be placed on an elevated structures outlined in the image.
Option 2. Steel supports
Parallel steels beams placed on raised steel supports. Steels placed at 1000mm centres metric tank panels.
Option 3. Secondary Steels
Concrete dwarf walls with parallel steels running perpendicular to dwarf walls. Primary walls centres no less than 750mm. Steels placed at 1000mm/500mm centres metric tank panels. This arrangement becomes necessary where access is restricted due to primary supports at 500mm centres.
Space requirements for installation
| A | B | C | D | |
| Tanks up to 3m deep | 600 | 425 | 750 | 500 |
| Tanks 2m – 2.5m deep | 600 | 525 | 750 | 500 |
| Tanks 3m – 4m deep | 600 | 625 | 750 | 500 |
Clearance dimensions in mm
Clearance may be varied by agreement for small tanks where access is deemed suitable.
Ladders with hoops will require a space of at least 1030mm.
Internally flanged base, Internally flanged (IF) and Totally internally flanged (TIF) tanks
Option 1 Concrete plinth
Flat concrete plinth- ensuring the plinth is level and that it extends 150mm beyond the tank internal length and width dimensions
Internally flanged base tank
Internally flanged tank (IF)
Totally internally flanged tank (TIF)
Option 2 Steel supports
Parallel steel beams – placed at 500mm centres metric tank panels.
Internally flanged base tank
Internally flanged tank (IF)
Totally internally flanged tank (TIF)
Option 2 Steel supports
Parallel steel beams – placed at 500mm centres metric tank panels.
| Internally flanged base tanks | B | C | D |
|---|---|---|---|
| Tanks up to 3m deep | 425 | 750 | 500 |
| Tanks 2m – 2.5m deep | 525 | 750 | 500 |
| Tanks 3m – 4m deep | 625 | 750 | 500 |
| Clearance dimensions in mm. Clearance may be varied by agreement for small tanks where access is deemed suitable. Ladders with hoops will require a space of at least 1030mm |
|||
| Internally flanged (IF) tanks | B | C | D |
|---|---|---|---|
| Tanks up to 3m deep | 150 | 750 | 500 |
| Tanks 2m – 2.5m deep | 150 | 750 | 500 |
| Tanks 3m – 4m deep | 150 | 750 | 500 |
| Clearance dimensions in mm. Clearance may be varied by agreement for small tanks where access is deemed suitable. Ladders with hoops will require a space of at least 1030mm |
|||
| Totally internally flanged (TIF) tanks | B | C | D |
|---|---|---|---|
| Tanks up to 3m deep | 50 | 750 | 500 |
| Tanks 2m – 2.5m deep | 50 | 750 | 500 |
| Tanks 3m – 4m deep | 50 | 750 | 500 |
| Clearance dimensions in mm. Clearance may be varied by agreement for small tanks where access is deemed suitable. Ladders with hoops will require a space of at least 1030mm |
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Case studies
