Strength of southern pine and Douglas-fir compared

MISSING IMAGE

Material Information

Title:
Strength of southern pine and Douglas-fir compared
Series Title:
Technical note ;
Physical Description:
1 p. : ; 21 cm.
Language:
English
Creator:
Forest Products Laboratory (U.S.)
Publisher:
U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory
Place of Publication:
Madison, Wis
Publication Date:
Edition:
Rev. Dec. 1952.

Subjects

Subjects / Keywords:
Wood -- Mechanical properties   ( lcsh )
Southern pines -- Mechanical properties   ( lcsh )
Douglas fir -- Mechanical properties   ( lcsh )
Strength of materials   ( lcsh )
Genre:
federal government publication   ( marcgt )
non-fiction   ( marcgt )

Notes

Additional Physical Form:
Also available on the World Wide Web.
General Note:
Caption title.

Record Information

Source Institution:
University of Florida
Rights Management:
All applicable rights reserved by the source institution and holding location.
Resource Identifier:
aleph - 029721187
oclc - 60933605
Classification:
lcc - TA419 .U45 no.119 rev.1952
System ID:
AA00025014:00001

Full Text



TECHNICAL NOTE NUMBER 119
UNITED STATES DEPARTMENT OF AGRICULTURE FOREST SERVICE
FOREST PRODUCTS LABORATORY
MAISN I5, WISICONSIN l-EIGED DECEMBER 1952

7-- 7

STRENGTH OF SOU RN PINE 'AND /
-!DD OU G LAS-FR sq"4



There is little difference between the strength of the southern pines and that of Douglas-fit from the Pacific Northwest, tests made at the United States Forest Products Laboratory show. True longleaf yellow pine averages heavier, stronger, andtougher than Douglasfir. Longleaf pine, however, is somewhat variable in its properties so that its lower range is comparable to the lower range in Douglas -fir. True shortleaf pine averages heavier and tougher than the fir, but is about equal to it in strength as a beam or post. Loblolly pine, though averaging heavier than the fir, is some.what weaker. The difference in strength between any of these pines and Douglas-fir is not so great but that low density pieces of the one species are weaker than the average for the other species.

As far as strength properties are concerned, the choice between any two lots of southern pine and Douglas -fir will depend upon the grade and density of the timber composing each lot.

zVIW38134F U. S. Dept. of Agiculture Librar Agriculture-Madison
/o A~riculturaI Experiment Stations
Att: Nrs. !. K. Cresap, Librarian Library 209 Horticulture Bldg.
Gainesvle, Florida




UNIVERSITY OF FLORIDA 3 1262 09216 7229