Case study: mining culverts

Marmion Ave, Wanneroo – Pedestrian Underpass Abandonment

Client: Wanneroo City Council, WA

Project Scope: Benefil RG30 foam injection of the void space under each double lane freeway section for a length of 17m for each side. A gross volume of 290m3 was installed on the 23rd March, 2013.

Methodology:The injection pipes were inserted through at varying lengths and foam pumped into the space through both injection tubes at 750lts/min until foam appeared at the vent outlet on the uppermcorners of the back wall. With temperatures above 35 degrees C, and the site having limited work hours, due to the set up being within the median strip on the freeway.