The geotechnical needs of DOTs and other agencies responsible for roads and bridges are vast. Issues include: Culvert repair Soil stabilization Void filling Concrete slab lifting Sinkhole remediation Slope control Slough control in tunneling
Protecting concrete usually means shielding it from the elements of nature or from harsh manmade chemicals. But it’s not just concrete that needs such protection. Corrugated metal pipe, steel surfaces, material hoppers, rail cars and masonry all can come in contact with corrosive or abrasive materials or harsh conditions.
"I have seen it all" - by Scott Kelly
In December 2013, I was 17 years into my career as a leak and concrete repair specialist — thought I’d seen it all regarding gushing leaks in manholes. One afternoon in Brentwood, Tennessee, challenged that premise. Kurt Koehn with CK Masonry asked me to assist with a particular manhole rehab expected to be unique and challenging. Of course, I accepted the invitation with complete confidence and made the four-hour drive from Atlanta. This manhole was positioned on
the edge of a well-groomed horse pasture and within a few feet of The Little Harpeth River — a setting you would associate with a picnic, not a manhole with its own built-in geyser!
Since 2007, Drew Muirhead, P.E., with the City of Brentwood, and George Kurz, P.E., had been working to monitor and reduce inflow and infiltration (I/I) in the City’s collection system. Using a network of permanent flow monitors and various rehabilitation projects, the monitors measured significant reductions in I/I until 2012-2013. Additional rehab work did not appear to be as effective reducing I/I in the main trunk system.
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