The MaxFab Tank Panel System (formerly the Enerpro Tank Panel System) is fabricated to the geometry of each receiving tank. The shell is the cylindrical sidewall. Roof, underside, and bottom cone are each panel-cut to match. The system accommodates the five common industrial roof geometries described below. Custom geometries fabricated on request.
| Tank geometry | How panels are cut | Typical application |
|---|---|---|
| Cylindrical shell | Full-height vertical panels; vertical standing seams, horizontal cables | All tank sidewalls |
| Dome roof | Custom-radiused pie segments radiating from the centre | Large-diameter storage/process; positive drainage and pressure capability |
| Low-pitch roof | Standard panels, custom-cut pie segments | Atmospheric storage tanks |
| High-pitch roof, external rafters | Panels cut and installed between rafter lines | Snow-load and rapid-drainage designs |
| Pie segment | Individual pie segments meeting at a centre apex | Intermediate-diameter storage tanks |
| Pie with external rafters | Pie-segment layout matched to rafter spacing | Combination roof designs |
| Bottom / cone / hopper / underside | Panels cut to the base geometry | Hoppers, cone-bottom pressure vessels, condensation-control undersides |
Shell (sidewall)
Cylindrical panels. Full panel height in one continuous vertical length from the base ring to the top angle. Standing seams run vertically; cables run horizontally at shell elevations per project drawings (typical 10–15 ft vertical spacing).
Roof geometries
Dome roof
Curved top requiring custom-radiused panels matched to the dome curvature. Panels cut as pie segments radiating from the centre. Used on large-diameter storage and process tanks where positive top drainage and pressure capability are required.
Low-pitch roof
Minimal slope. Standard panel application with custom-cut pie segments. Common on atmospheric storage tanks.
High-pitch roof with external rafters
Steeper slope, structural rafters on the exterior. Panels are cut and installed between the rafter lines. Used where snow load and rapid drainage drive the design.
Pie segment
Cone-shaped roof formed by individual pie segments meeting at a centre apex. Each segment is a custom-cut panel. Common on intermediate-diameter storage tanks.
Pie with external rafters
Combination geometry: pie-segment roof with external structural rafters. Panel layout matched to the rafter spacing.
Bottom / cone / underside
Bottom cones, hopper bottoms, and tank undersides are panel-cut to match the base geometry. Used on hoppers, pressure vessels with cone-bottom storage, and underside applications where condensation control is required.
Panel closure detail
| Closure type | Application |
|---|---|
| Double-lock standing seam | Primary closure. All shell and most roof applications. Weather-tight, mechanically locked, no sealants. |
| Single-lock closure | Used where double-lock geometry is not achievable. Documented in Detail D102. |