![]() ![]() Throughout the process, the bore hole’s walls are held intact by pipe. ![]() As they extract the dummy pipe from the hole, the new gas line simultaneously slides into its place. They weld the gas line to the rammed pipe’s end. On this 12-inch-diameter Seattle installation, Kinnan used a 12-inch HammerHead ramming tool in a technique called “slick boring.” The technique consists of first ramming a dummy pipe the same diameter as the gas line product from one side to the other. We can call up Cameron or Jim anytime we need something. And he likes working with Cameron Zoucha of Ditch Witch West, his trenchless dealer, and with Jim Moore, HammerHead Regional Manager, Rehab and Replacement. Right now, in fact, we have a 10-inch hammer on a drilling job, both hammering in and pulling with it.”Ĭarter said he especially likes the 10-inch ramming tool made by HammerHead Trenchless. “We even use a hammer now in combination with our auger-boring jobs. “We’ve been doing pipe ramming many, many years and own an array of equipment from the top manufacturers,” Carter said. Once in a while a railway will even specify a job be done using only the pipe ramming method. But when there are running sands, such as this one, they employ pipe ramming techniques. In ground conditions conducive to boring, Kinnan will auger in the lines. ![]() Kinnan engineering is expert in all trenchless technologies, and Carter said railway companies most often let Kinnan decide which trenchless method to use, so long as they meet the railway’s stringent job requirements. Kinnan has done hundreds of railroad crossings over the years, many of larger diameter and greater distances. SODO is a unique mix of recreational areas, stores, restaurants and entertainment venues amid office and industrial complexes.ĭon Carter, who heads up Kinnan Engineering’s jack-in-bore and pipe-ramming operations, said at first this job had seemed to be a routine installation. Utility installations are a Kinnan specialty they offer customers throughout their nine-state, West Coast service area, which includes Alaska.Ī 2018 job for a Kinnan utilities customer required the installation of 120 feet of 12-inch-diameter gas line 6 to 7 feet beneath parallel tracks in the SODO district of Seattle. in 1995 as a separate contracting service from Kinnan Engineering’s Underground Technologies division, an underground technologies tooling manufacturer at that time. Keith and Diana Kinnan founded Kinnan Engineering Inc. That’s why railroad companies generally permit only trenchless installation methods, trusting the work to specialists like Kinnan Engineering, Inc. It also compromises the integrity of the formation, posing the threat of eventual, catastrophic failure causing train derailment. However, below the rails and crossties lie carefully constructed systems providing stability and support for the massive loads of passing trains designed to efficiently disperse the forces into the subgrade.Įxcavating through the formation completely stops all rail traffic on that section from project start to end. To casual observers, modern railroad tracks appear to be nothing more than steel rails nailed to wooden crossties in the ground. 120 Feet of Gas Line Installed Under Live Rail by Slick-Boring Despite Multiple Undocumented Obstacles Under the Tracks ![]()
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