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Saturday, May 07, 2016

A Long Day

UAS Construction Update for 05/07/2016

A Long Day

What started out as one day’s work has turned into more.......     Construction on the UAS waterline repair started early Thursday morning with high hopes of making the repair by the end of the day.   However, wet weather, a maze of other underground utilities and a bunch of concrete that had to be hand chiseled away from a pipe connection stretched  the project out until 6:00 PM Friday before we could get the water turned back on to Hendrickson Building, Soboleff Building, Hendrickson Annex, and Soboleff Annex.  

Just when the work crew was ready to head home for a hot meal and warm shower, UAS experienced another waterline break that shut down the water to the John R. Pugh residence hall.  What a disappointment….  Sort of like making the winning goal, only to have it recalled due to a penalty.  Or like hiking the Chilkoot and getting to Bennett Lake Lodge just to find out they ran out of stew and sourdough rolls.  It was a long day.

Good news is that the John R. Pugh Residence Hall is the only building affected and we have 7 days before the summer guests start showing up.   This is plenty of time to make another repair to the waterline.  A big Thank You goes out to the Admiralty Construction Crew for working long hard hours to get our Campus back on line.   Below are some photos of their work.

 

Pipe Trench Start
Pipe Trench Start
 

Start of the Trench Excavation

 

Water Pump in Bottom of Trench
Water Pump in Bottom of Trench
 

Pump in the bottom of the trench keeps water out of the trench.  The Contractor also had two additional pumps just uphill pumping water around the trench.

 

First Pipe Piece
First Pipe Piece
 

 

Last Pipe Piece
Last Pipe Piece
 

 

Tighting Bolts
Tighting Bolts
 

Two new pieces of pipe were installed, One 20-foot section and a 4-foot section.  This required 5 connections with 14 tension bolts and 14 compression bolts each for a total of 140 bolts that needed to be installed. Tightening the bottom bolts are always difficult.

 

Exothermic Welding
Exothermic Welding
 

Exothermic Welding of Wire from Cathodic Protection to Waterline.

Exothermic welding is a welding technique that uses an exothermic reaction of a thermite composition to heat a base metal to a molten mass that permanently bonds the wire to the pipe.  This process requires no external source of heat or electricity.

 

Exothermic Weld
Exothermic Weld
 

Example of Exothermic Welding Device

 

Stopped for the Weekend
Stopped for the Weekend
 

Construction Site Shut Down for the Weekend

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