Dead level.
Bomb-proof.
Done once.
One solid concrete set. No rings, no shims, no grout.
We take out the failed chimney and casting and rebuild it as one reinforced concrete set, 40 MPa minimum at 28 days, set dead level and bonded to the casting. There are no seams, so there is nowhere for it to sink, crack or let water in. The road is open about 4 hours after breakout.
How the method worksWho we work for
Most of our work is for paving contractors who need every manhole and valve on the road swapped before the new asphalt goes down. Every Lower Mainland municipality has used us at least once.
I spent years inspecting manholes that kept failing.
I was a municipal Engineering Inspector for over 20 years before I started this company. The same manholes came back year after year. Stacked riser rings, shims and grout sink and crack under traffic. So we built a method that replaces the chimney as one piece. That was six years and thousands of manholes ago.
Curt Brown, AScT
The problem is the method, not the crew.
Stacked concrete rings, shims and grout, levelled by string line. Every seam is a place to sink, crack and let groundwater in.
One reinforced concrete set, poured around the casting and set dead level to grade. No seams. Nothing to come back to.
For engineers and inspectors.
The detail sheet and our Informed Client Guide cover the materials, the tolerances and what to look for on site. Use them in your spec or your tender package.
Done once, street by street.
People who do this every day.
Manholes and valves are all we do. The machine does the heavy work, which is why nobody on this crew has had a serious injury in 6 years.
Join the crew