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Railroad crossing and railroad track drafting

Railroad crossings, turnouts and other metal railroad track components are under considerable stress nowadays due to the heavier axle loads of enormous locomotives and longer trains. Eventually inserts, frogs and rail sections all have to be replaced. Often the drawings that engineering has to work with do not give enough information for the fabrication of the needed components.
The geometry of a diamond crossing looks simple enough untill you try to calculate lengths of bent rails and bend angles. Even figuring out the lengths of tie bolts can be a nightmare.
If you have a new diamond crossing to build or if you need to rebuild any railroad track components please consider AAA Drafting for the drafting of the rails, inserts and other components.

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A SolidWorks designer talks about stuff related to CAD and mechanical design

Wind energy stored in unused high pressure pipe.
Wind energy is supposed to be free and something every country would like to take advantage of. But even if you install windmills there is still the problem of how to store the energy. At the moment, batteries are just not practical for storing the large amounts of energy for later use. A veteran of the canadian pipeline business may have come up with a novel alternative.

Dave McConnell, of Lancaster Energy Systems in Alberta, Canada proposes using windmills to drive a nitrogen compression system. Forcing inert nitrogen gas into unused large diameter gas pipelines, he makes what amounts to a gigantic compressed air tank. Releasing the compressed gas makes it possible to generate power anywhere along the pipeline.

The idea has been extensively researched by top scientists and engineers and may well be implemented in the coming years. It looks like a unique way to take advantage of two things Canada has in abundance. Wind and high pressure gas pipelines.