Rocla® concrete box culverts best for flow

A sizable Rocla® Concrete Box Culvert and link slab solution has been installed on the final stages of the Chesterfield Park subdivision development in Warragul, East Victoria to bridge a major creek crossing.

Longtime Rocla customer, Tribuzi Contractors, have developed the drainage and civil works for the entire subdivision, starting around four years ago with stages 11 and 12 now bringing the works to completion with a total of 250 home sites.

The creek crossing solution, designed by Miles Civil Design of Warragul, features 34 of 1500 x 900 x 1.22 Rocla® Concrete Box Culverts and 17 link slabs, which were all delivered to site and then placed in a single day using an excavator.

“This is about as big as a job like this gets and it all went in within a day with no dramas,” said Steve Bassed of Tribuzi Contractors. With the creek being diverted around the side of the works to enable laying of the base and placement of the culverts, using pre-cast products was key to achieving the start to finish timeframe of 3-weeks.”

“Box culverts are the best method to use in a situation like this because of flow,” said Steve. “This solution is designed for a 100-year frequency flood.”

“With box culverts, you always get a better flow rate than pipes and their shape allows for a lower finished road surface level. It’s a practical option in these circumstances,” said Robert Burns, Sales Representative for Rocla. “In addition, using link slabs between two channels of culverts also means less mass in the waterway, less cost and less weight to move around the site.”

Warragul is one of the largest growth areas in east Victoria (about 100km east of Melbourne) with a number of new subdivisions being developed over the last five years to meet the demand for people making a lifestyle move from the city to the country. The Chesterfield Park subdivision has views of Mt Baw Baw to the north and Strelecki Ranges to the south.