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Title: Field investigation of a 100-year-old Timber crib foundation at a historic copper mine

Source: In: Proceedings of the 11th world conference on timber engineering, 2010 June 20-24. Riva Del Garda, Italy. Ario Ceccotti and Jan-Willem van de Kuilen, eds. (CD only, without page numbers).2010

Author(s)Wacker, James P.; Wang, Xiping; Rammer, Douglas R.

Publication Year: 2010  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4714-3A

Abstract: In June 2009, the authors conducted a comprehensive on-site evaluation of the timber crib foundation at Alaska′s Historic Kennecott Mine Concentration Mill Building. The primary goal of the 6-day inspection was to assess the physical conditions of the existing timber crib foundation and identify timber members and areas that have structural deficiencies. The inspection process included visual assessment, species identification/confirmation, moisture content determination, stress wave scanning test, resistance micro-drilling, and core-drilling. Extensive deterioration was noted in the timber crib foundation members at the lower floors of the mill building. The upper levels of the timber crib foundation exhibited less deterioration, especially in areas where the timber crib cells were not filled with soil. Current efforts are focusing on a comprehensive structural evaluation of the Concentration Mill building with the goal of stabilizing and preserving this historical mining building important to the cultural heritage of early 20th century America.

Keywords: Wood deterioration, historic buildings, conservation, restoration, weathering of buildings, wooden buildings, Alaska, Wrangell-Saint Elias National Park and Preserve, Pseudotsuga menziesii, Douglas fir, moisture, wood moisture, inspection, nondestructive testing, mechanical properties, drilling, boring, micro-drilling, stress waves, foundations, maintenance, repair, wood decay, Kennecott Mine, moisture content, crib foundation, structural timbers, historic mine, substructure

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 395 kb(s)

Date posted: 05/16/2011

This publication is also viewable on Treesearch:  view
RITS Product ID: 36156
Current FPL Scientists associated with this product (listed alphabetically)
Rammer, Douglas R.
Research General Engineer
Wacker, James P.
Research General Engineer
Wang, Xiping
Research Forest Products Technologist

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