Skewed link slabs go together like clockwork at Chinchilla

A long fought program of works to improve the Queensland town of Chinchilla’s drainage system and stormwater capacity is well underway with a number of pipeline and crossing projects awarded to longstanding Rocla customer, South East Earthmoving.

One such project recently completed is a large, skewed culvert section, designed to follow the angle of the road, which carries water through the Chinchilla stormwater channel under Chinchilla Tara Road.

With around 85 components to place, Stuart Bazley from South East Earthmoving said there was a bit of an art to constructing the culvert and link slab system, but his initial concerns were quickly put to rest. “Because they were skewed and we had spanning slabs, there was no room for error when we were doing the setout,” he said. “The spanning slabs have dowels to attach to the top of the culverts so we screwed timbers to the base slab so when we craned them in, they were right on position. It took less than a day.”

Stuart says the principal, Western Downs Shire Council, is very happy with the new trunk drainage system that both looks fantastic and will help improve water flow out of the town of Chinchilla during heavy rain or flood events.

The skewed slabs required careful planning to ensure the culverts were linked precisely.

Stuart Bazley of South East Earthmoving has been in the business of civil earthworks for 25 years and has dealt with Rocla for around 20 of those. He says Rocla is a one-stop shop for him when it comes to concrete products. “I tender for projects like everyone else and I source prices only from Rocla because I have a terrific working relationship with them. Rocla are always very competitive and their product is second to none.”

Chinchilla stormwater channel:

  • 3.2km long – runs from Gormley Rd and finishes at the eastern end of the showgrounds
  • More than 170,000m3 of dirt excavated
  • Over $1m of concrete poured
  • Skewed culvert structure installed featuring 85 precast components