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Hdpe Pipe Failure Spawns Costly Texas Fish Hatchery Drainage Replacement

The John D. Parker East Texas Fish Hatchery, scheduled for an early-2011 stocking, is the latest major instance of high-density polyethylene pipe failure. Sections of 60-in. and 48-in. diameter corrugated HDPE drainage structure collapsed under 10 to 17 ft. of earth fill, and an 11,000-ft. stretch of the flexible pipe was determined

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Fhwa Approaches Hoover Dam Bypass Opening With Ceremonial Roadway Walk

“Bridging America” is the theme of an October 16 pedestrian event at the centerpiece of the U.S. 93 Hoover Dam Bypass: the Colorado River Bridge, whose 1,900-ft. roadway soars 900 ft. above the Black Canyon and bears on prolific twin concrete arches. The structure consists of segmental cast-in-place and precast concrete arch members, spandrel columns and piers

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Labor Board Eases Redress For Employees Fired During Organizing Campaigns

When charges filed in connection with employee terminations amid union organizing campaigns are found meritorious, the NLRB general counsel’s office will now consider seeking a federal 10(j) injunction compelling an employer to offer worker reinstatement pending litigation of the underlying unfair labor practice case

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Concrete Performance Reaches New Height In Advanced Lehigh Leeds Silo

Lehigh Leeds’ new “D” Silo features sophisticated environmental controls to produce a virtually dust-free product-loading system, and demonstrates characteristics of a concrete structure with projected 100-year service life

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