Posted by gregk on January 30, 2011 at 15:26:34 from (99.196.64.56):
In Reply to: O/T Hydro plants posted by NYEthan on January 30, 2011 at 11:14:55:
Went on a tour of Gavins Point dam, the lowest and smallest on the Missouri river. Got the special tour as they were doing repairs on the turbines and got to go walk through them and stand in one. The gates around the turbine are about 8' tall and weigh about 7000 pounds apiece. by comparison the ones at hoover dam are about 4' tall, since they have a greater height of drop for the water. In Yankton the drop is 73' I believe they said.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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