Journal article
Influence of air-seasoning on fungal colonization and strength properties of douglas-fir pole sections
Forest Products Journal, Vol.37(9), pp.45-48
1987
Abstract
In this study, decay fungi were more frequently isolated from poles as air-seasoning time increased; however, fungal invasion seemed to be retarded in poles treated with ammonium bifluoride. Static bending of 1- by 1- by 16-inch beams removed from air-seasoned pole sections showed that modulus of elasticity (MOE) was unchanged over 3 years, work to maximum load was decreased after 2 years, and modulus of rupture (MOR) was lower after 3 years, and modulus of rupture (MOR) was lower after 3 years. All strength values were within an acceptable range for Douglas-fir. Beams cut from the outer heartwood of poles had higher MOR and MOE than beams cut from the sapwood or inner heartwood. Sapwood beams had the highest work to maximum load strength. Results of static bending tests and measurements of specific gravity, Pilodyn-pin penetration, and compression strength indicate that poles can be air-seasoned for as long as 3 years without adversely affecting pole strength.
Details
- Title
- Influence of air-seasoning on fungal colonization and strength properties of douglas-fir pole sections
- Authors
- S M Smith (Author)R D Graham (Author)Jeffrey J Morrell (Author)
- Publication details
- Forest Products Journal, Vol.37(9), pp.45-48
- Publisher
- Forest Products Society
- Date published
- 1987
- ISSN
- 0015-7473; 0015-7473
- Organisation Unit
- University of the Sunshine Coast, Queensland; National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 99451473502621
- Output Type
- Journal article
Metrics
147 Record Views