Trenchless Technology

NOV 2018

Trenchless Technology is the premier communications vehicle for the trenchless industry. Through our multiple platforms, readers receive insights into the trenchless industry, as well as keep connected to the latest news, products and projects.

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Page 27 of 68

W W W.T R E N C H L E S S T EC H N O LO GY.C O M 27 N O R T H A M E R I C A N M I C R O T U N N E L I N G 2 0 1 8 R E V I E W swing , separately acquiring Caldwell Marine International , Huxted Tunnel - ing , and ECI International by 2014. Northeast Remsco has been a lead- er in microtunneling for many years, and completed a landmark project in 2010 – the first planned, curved mi- crotunnel in the United States. As part of the Homestead Avenue Interceptor Extension in Hartford, Connecticut, Northeast Remsco proposed extending the final 310 lf microtunnel an addi- tional 290 lf and incorporating a curve to accommodate a planned 4-degree horizontal deflection. This eliminated the need to construct an intermediate shaft, resulting in time and cost saving. " The principal challenge [at that time] was to overcome the liability concerns associated with curved mi- crotunneling ," said Richard Palm- er, trenchless division manager for Northeast Remsco. " U.S. engineering firms were reluctant to design a proj- ect that required the use of a 'never been done in the U.S.' microtunneling technique. Fortunately, the designer engineer and the owner were receptive to the idea and collaborated on the fi- nal version of that curved microtun- nel . It is interesting to note that the change order authorizing the curved microtunnel included language that shifted all of the risk to the contrac- tor; shedding the risk was paramount to breaking down the barrier." Northeast Remsco is a founding member of the North American Mi- crotunneling Association (NAMA), with Palmer serving on the executive board. NAMA played a role in guid- ing revisions to the recently updated "Standard Design and Construction Guidelines for Microtunneling " pub - lished by ASCE, as well as implement- ing new guidelines in the AREMA standards confirming how microtun- neling can be used successfully on railroad properties across the country. The company continues to set the bar higher for its microtunneling proj- ects. In 2017, the firm broke records for its longest drive as part of the three Broad Creek WWPS Augmenta- tion Projects near Washington, D.C . In fact , Northeast Remsco set the mark three separate times during the course of the projects, with the longest being 1,560 ft of 66-in. casing . "Long drive lengths create a new set of challenges," said Northeast Remsco proj- ect manager Pete Sudkamp. " You need to consider 24-hour-a-day operations to keep the pipe string moving , and you have to manage your jacking loads, in- cluding proper lubrication techniques and the use of interjack stations." LO O K I N G B AC K Despite the advancements, Acosta re- members the early days of the company as he continues forward. " You don't forget that early stuff. I did my home- work on Carmine's plan table. I loved that it had the overhead light and there was an electric eraser. The vendors we still work with today, back then they were walking into the house while I

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