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RE: Vinyl Sheet Piling Foundation Walls

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Some further clarification on the Alaska project....

This site is located approximately 60 miles from the park entrance along a
dirt road.  This road is passable for only 3-4 months of the year.  The
visitor Center will be tucked into a hillside so that it is not visible on
the landscape, which is good since few people go to Denali National Park to
see a building...  The building must be completed within two construction
seasons.

It appears from the drawings that the vinyl sheet piling will be used to
retain earth since it shown along the wall that is against the hillside.
What is not clear from the drawings is if the sheet piling is spanning
horizontally or vertically.    A cast-in-place concrete wall is shown
terminating at the floor elevation.   The steel columns are attached to
this foundation wall and span to the roof.

The engineer had originally proposed precast panels.  The park has a
surplus of vinyl sheet piling and has made this material available for this
project, which would help to reduce construction costs.

My opinion is that the precast panels are the best alternative.

Thanks for the input,

Larry  Reynolds, P.E.
National Park Service


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