Features

Jeff Griffin, Senior Editor

LMK Technologies has introduced to the North American market a new robotic camera/cutter system for rehabilitating sanitary sewer laterals. The German-made Schwalm robotic systems, widely used in Europe and Asia, are available now from LMK Technologies, said Larry Kiest, chief executive officer and president of LMK.

With typical daily temperatures barely topping 5 degrees Fahrenheit, winters in Calgary, Alberta, can easily hinder trenchless operations. Liquids in machinery can freeze solid, while expanding groundwater can potentially warp rails and other equipment in launch pits.

Workers placed the last piece of the Aurora Prairie Waters Project supply pipe on Thursday, February 11, 2010, nearly two years after pipeline construction began. The Prairie Waters Project will help drought-harden the city of Aurora, CO, beginning in 2011.

Jeff Griffin, Senior Editor

In a transaction that surprised most of the underground construction industry, the Earth Tool Co. and its HammerHead product line was acquired by The Charles Machine Works Inc., manufacturer of Ditch Witch equipment.

Traci Read, Senior Editor

Don't gamble with your safety — if you're a professional excavator or a homeowner, smart digging always requires a call to 811. Knowing where underground utility lines are buried before you dig will help protect you from injury and prevent damages to utilities, service disruptions and potential fines and repair costs.

Traci Read, Senior Editor

In 2010, the North American Society for Trenchless Technology (NASTT) celebrates its 20th anniversary. Founded in 1990, NASTT is composed of trenchless professionals who are concerned with underground systems and the applications of trenchless technology.

NASSCO member Barry Howell, General Manager, Visu-Sewer, Inc.

Without a doubt, the most misunderstood facet of sewer cleaning is the relationship between flows and pressures. Generally, pressure is mistakenly viewed as the wildcard or the reason for concern, and flow is usually ignored. Operators often misunderstand the operation of their pump, the relationship to hose diameter and length to performance and other variables of jetting.

The completion of another record breaking pipe installation, this time at Parris Island, a marine training base in Beaufort, SC, marks a series of successful and lengthy crossings of Fusible PVC (FPVC) pipe. Beaufort Jasper Water & Sewer Authority (BJWSA) contracted Mears Group Inc. to horizontally directional drill two crossings, 6,400 feet of 16-inch DR 18 FPVC and 600 feet of 16-inch DR 21 FPVC.

Jeff Griffin, Senior Editor

For excavation projects requiring manned entry, shielding and shoring trench walls is a major cost. Material and labor prices escalate as excavations cover more area and become deeper. On many large projects -- especially long runs of large-diameter pipe installation -- slide rail systems have become the preferred method of preventing the collapse of trench walls.

Jeff Griffin, Senior Editor

U.S. Environmental Protection Agency Interim Tier 4 emission standards for off-road equipment powered by diesel engines of 175 to less than 750 horsepower will go into effect on Jan. 1, 2011. From that date through Tier 4’s final implementation in 2014, the equipment marketplace will begin to change for equipment manufacturers and dealers and their customers.

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