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Title: Engineering evaluation of 55-year-old timber columns recycled from an industrial military building

Source: Forest products journal. Vol. 50, no. 4 (Apr. 2000).:p. 71-76 : ill.

Author(s)Falk, Robert H.; Green, David; Rammer, Douglas; Lantz, Scott F.

Publication Year: 2000  View PDF »

Related Publications: view

Category: Journal Articles

Abstract: A large sample of timber was collected from a 548,000-ft.2 (50,900-m2) World War II era industrial military building containing approximately 1, 875,000 board feet (4,400 m3) of lumber and timber. Sixty 12-foot- (3.6-m-) long, nominal 8- by 8-inches (190-by 190-mm) Douglas-fir columns were tested at the USDA Forest Service, Forest Products Laboratory, and the results were compared with the National Design Specification allowable design capacity. The effects of seasoning checks and splits on residual column strength are presented. Results indicate that about one-third of the columns were downgraded due to in-service defects, such as checks, splits, and mechanical damage. Both the modulus of elasticity and compressive strength were found to be greater than todayas design values.

Keywords: Columns, Evaluation

File size: 199 kb(s)

This publication is also viewable on Treesearch:  view
RITS Product ID: 22025
Current FPL Scientists associated with this product (listed alphabetically)
Falk, Robert H.
Research General Engineer
Rammer, Douglas R.
Research General Engineer
 

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