Tank Roof Options

Pioneer Water Tanks has invested extensive effort developing a roof structure that is not only easier to install but stronger and easily adaptable for most applications.

The innovative truss foot connection allows a flush strong bolted connection with the tank wall, resulting in direct load transfer from roof structure to tank wall and then to the ground.

All roof structures utilise the strength of square hollow sections (SHS), fully welded and post galvanised to build a strong, robust structure that will perform in all conditions.

Additionally, all dome roof structures are carefully engineered to achieve load paths of uniform capacity to maximise cost efficiencies.

Industry Standard

This is a robust engineering roof structure comprising SHS tube members fabricated into welded roof trusses with swivel truss feet to enable secure alignment with the tank wall.

The SHS trusses are high strength/ high ductility and are engineered to provide direct load paths for all loads that are incident to the roof into the tank wall. The structure is typically galvanised to ensure excellent performance and long life. The roof structure is capable of handling construction and maintenance loads as required by AS1170.1.

As with most light building-type structures, personnel need to restrict their footprints to the lines of the trusses. this roof is suitable for most applications where standard access hatches are required, and when not located in an exposed area subject to gales. These roofs are designed in accordance with the relevant clauses of AS1170.0, AS1170.1 and AS1170.2, and can withstand regional wind speeds of up to 43 meters per second, as specified in AS1170.2.

Heavy Duty

The heavy duty roof is designed in accordance with the relevant clauses of AS1170.0, AS1170.1 and AS1170.2 to withstand minimum regional winds up to 43 meters per second.

Embodying the features of the industry standard roof design, the heavy duty tank roof is capable of handling heavier loads arising from larger platforms such as the two metre by two metre roof platform and handrails.

The heavy duty roof has been structurally designed to enable mounting of ancillary features such as a vent hatch on one side of the roof diametrically opposite the access hatch. 


Two Cyclonic roof designs are available for cyclonic regions C and D in accordance with the relevant clauses of AS1170.0, AS1170.1 and AS1170.2.

Regional wind speeds in accordance with AS1170.2 for region C and region D cyclonic roof are 65 metres per second and 82 metres per second respectively.

The cyclonic roofs embodies the features of the heavy duty roof design with roof trusses of greater depth and closer spacing to withstand the higher wind velocities expected in Cyclonic regions C and D.

Open Roof Tanks

Pioneer Water Tanks have developed a system for tanks without the need for a roof structure.

The open top tank ring truss gives superior strength and stiffness to the top edge of the tank body as shown in the image below.

The simple, but very effective solution works very well for tanks in the effluent treatment industry whereby special ring trusses must be designed to accommodate loads imposed from equipment such as floating aerators.