Technical Resources
Tunnelwell System Design
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System Plan & Section Views
Design layout for 1m3 Tunnelwell arch system for AS5100:2 loads.
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System Plan & Section Views
Design layout for 1m3 Tunnelwell arch system for carpark 5KPa loads or 31KN point loads.
Product Drawings
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1m3 Arch Drawing
Detailed drawings of 1m3 Tunnelwell arch.
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1m3 750mm Access Arch
1m3 vertical access arch for 750mm manhole with 731mm clear opening
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1m3 Arch with Side Entry
1m3 Arch with 525mm welded side entry pipe.
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1m3 Std End Cap
Detailed drawings of 1m3 Tunnelwell end caps.
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1m3 End Cap with Pipe Socket
1m3 end cap detail with welded spigot option.
Engineering Design Aids
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Inspection/Access Pit
Design details for an inspection/access pit.
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Deceleration Chamber
Design of a deceleration chamber.
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Air Relief & Clean-out
Engineering design details for system air relief.
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Gabion
Design details for scour prevention.
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Design Aids
Engineering Design aid notes.
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System Calculator
Storage calculator
Installation Information
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Installation Instructions
Full installation instructions for 1m3 Tunnelwell arch system.
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Install Instructions (DIY)
Additional installation instructions for home/DIY applications.
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Installation Instructions (Leach Drains)
Installation Instructions for leach drains.
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Installation Details
Detailed view of how cells are assembled during installation.