Concrete Pits & Covers

Tri Underground supplies a full range of pre-cast concrete jointing pits and manholes suitable for electrical, communications, defense and Telstra applications.  Specialist or custom pre-cast pits can be developed for your specific application.



  • concrete_pitsSignificant cost advantage over in-situ construction saving time and effort during the installation process.
  • Minimises delays due to weather or work schedules.
  • Higher level of quality due to their factory construction.
  • Knockout holes included to allow quick and easy conduit access. 
  • Lifting eyes are incorporated into the pits for easy offloading and positioning.
  • Full range of covers in reinforced concrete, cast iron or galvanized steel including both locking and non locking options. 
  • Covers and Frames available in Concrete, Galvanised Steel and Cast Iron in all load classes.
  • Multipart or Single part Covers
  • Custom Pits able to be manufactured to your specification.


Standard precast pits available include:

Pit Type



1395l x 580w x 900d

J8 Telstra

1439l x 623w x 960d


2075l x 605w x 900d


2075l x 600w x 1050d