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Shorter lead times. Custom Civil Products.
Manufacturing Plants in QLD, NSW & VIC.
Shorter lead times. Custom Civil Products.
Manufacturing Plants in QLD, NSW & VIC.
Shorter lead times. Custom Civil Products.
Manufacturing Plants in QLD, NSW & VIC.
Shorter lead times. Custom Civil Products.
Manufacturing Plants in QLD, NSW & VIC.
Shorter lead times. Custom Civil Products.
Manufacturing Plants in QLD, NSW & VIC.
Shorter lead times. Custom Civil Products.
Manufacturing Plants in QLD, NSW & VIC.
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concrete products

Tri Underground manufactures a large range of concrete products to suit a multitude of applications. These are all manufactured from our Queensland concrete plant and are then shipped Australia Wide. Steel reinforcement and 40 MPA concrete is used in all products. We are an approved pre-cast supplier to both Queensland Main Roads network and Energy Queensland. Along with our standard range below, we are experts in design and creation of bespoke and custom pieces across a variety of industries.

Uniculvert & Base

Tri Underground are an approved supplier of the Energy Queensland Uniculvert & Base (commonly referred to as Padmount Culvert & Biscuit). Uniculverts & Bases are installed below ground to support several cabinets including the 500kva square transformer cabinet 4.1 Ton (Energex stock code:25118) and aid in proper feeding of cables through the ground up into the cabinet.

The Uniculvert is manufactured complete with end walls (Energex Stock Code 19959 / Ergon Stock Code 000168535 and the Base is manufacture to Energex Stock Code 19960 / Ergon Stock Code 0001042. Due to the weight of the Uniculvert, Tri can offer a special delivery service that includes crane unload and placement of the culvert & base into the hole on site.

RMU Invert Culvert

Tri Underground are an approved supplier of the Energy Queensland RMU Invert Culvert 900x900x1200 (Energex Stock Code 19566). These culverts are installed below ground to support several cabinets including the Ring Main Unit model Sc0034142, 4way RMU ABB SafeLink. Often these are installed with the UNIBASE to create a stable ground to put the invert culvert on.

Due to the weight of the RMU Invert Culvert, Tri can offer a special delivery service that includes crane unload and placement of the culvert into the hole on site.

 

CONCRETE COVERS

Tri Underground are a manufacturer and supplier of Class A Concrete Covers designed to suit the P1-P9 Plastic pit range. These covers are available in Electrical and Communications for P1, P2, P3, N1/3, P4, P5, P6, P7, P7 & P9 and NBN in P2, P5, P6/8/9. Other covers are available upon request.

CONCRETE PLINTHS

Concrete plinths are used to hold conduit in place when trenches are being backfilled with concrete (flowable fill). They are placed underneath conduits which are tied to them through the hold down/ tie points points to stop conduits floating while being backfilled. They come in a range of different sizes including; 50kg, 120kg, 225kg and 120kg single carriage. 

Cabinet Bases - Single Traffic Signal Base & Telco Field Cabinet Base

Single Traffic Signal Bases & Telecommunications Field Cabinet Bases (otherwise known as traffic signal plinth & telco plinth) are made to suit a variety of standard cabinets used Australia wide. These pre-cast bases offer a fast and effective solution for feeding conduit and cables from beneath the surface, into the cabinet.

Specifically, to the QLD Main Roads market, the Traffic Signal Base is made is SD1423 & The Telco Base is made is SD1679. Both bases are designed to be installed under the relevant cabinet with pre-set anchor points to attach to the cabinet.

Concrete Circular Surround to suit 600mm dia T60 pit

Concrete surrounds are designed to protect pits against damage most commonly caused by mowers/slashers. They are a pre-cast drop in solution that requires no form work on site and offer a stable platform for working access to the pit. The concrete surround is designed to suit a 600mm dia pit and our manufactured to QLD Main Roads SD1685.

Retaining Bases

There are multiple types of retaining bases to suit light poles and pits that are used across a variety of networks covering pits and streetlights for both power and roads authorities. Retaining Bases are commonly used to help protect where the poles are joined to the ragbolt /foundation cages and pit covers when installed on a slope. Different options are used for different gradients ranging from 1:6 to 1:2.

Base Plate Mounted Pole

The Base Plate is designed to be used in applications with steeper embankments that have cross falls greater than 1:2. These bases are designed to suit footings installed with a 600mm dia foundation and meets QLD Main Roads SD1393.

Slip Base Pole

The Slip Base is designed to be used in applications with shallower embankments that have cross falls greater than 1:6 up to and including 1:3. This is the most commonly used retaining base for light pole installations as it’s open ended ‘horseshoe’ shape can be installed after the pole has been erected. These bases are designed to suit footings installed with a 600mm dia foundation and meets QLD Main Roads SD1382.

Pole Step Tread

The Pole Step Tread is designed for be used in the shallowest applications for cross falls greater than 1:6 and up to and including 1:3. These are the most versatile retaining base as they are a concrete plank that is commonly installed roadside to protect poles, pits and solar battery boxes. These are made to QLD Main Roads SD1429 and are installed alongside 4x galvanised steel star pickets for support which Tri Underground also supply.

Base Plate to suit a 600mm dia T60 circular pit

This Base Plate is designed to suit 600mm dia Circular pits, including installations with a Concrete Surround. This protects the pit cover from debris when installed flat on sloped terrain. It is designed to suit installations for cross falls greater than 1:2.

Solar Battery Storage – Concrete Pit with PE Box

Tri Underground manufacture a precast concrete solar battery box storage pit which houses the PE battery boxes safely and securely. They utilise tamper proof security bolt locking covers to protect expensive batteries housed inside from theft or damage. With renewable energy targets increasing Australia wide, this offers a simple solution for secure yet easy access to batteries for maintenance as it is designed for installations at surface level.

The Tri Underground Battery Box Pit is designed for simple yet robust drop in installations with a Class D load rated cover, making it ideal for roadside installations including highway lighting and signage. As well as being used Australia wide, this is a QLD TMR Type approved product.

Subsoil Outlet Block

Subsoil outlet blocks are a small retaining wall with a pre-cast 100mm DWV (110 OD) pipe and frog flap providing a simple but effective drainage solution. These are frequently used in concrete and soil embankments next to roadways and alongside the Battery Box pit.

Pre-Cast Foundation Cages

Ragbolt foundation cages are essential for proper installation of poles as they supply a stable and supportive footing to the pole below the surface of the ground. Pre-Cast Foundation Cages are designed to be a quick and easy installation solution that eliminate concrete pouring and curing wait time. These are manufactured on site from our QLD branch in 4 standard sizes. These are 800mm deep, 1.2m, 1.5m and 2.3m deep pre-cast foundation. They are cast with 40 MPA concrete with a galvanised steel 4 bolt, 350 PCD Ragbolt. Custom pre-cast footings are available upon request.

Concrete Cable Cover Slabs

Concrete Cable Cover Slabs are a concrete protective cover that is laid above conduits and/or cables under the ground to warn anyone that there are cables buried below. These are available in different sizes with either ‘Electric cables below’, ‘Communications cables below’ or ‘Energex cables below’ written on them. Custom labelling is also available upon request for large runs.

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