SUGAR PINE, li 
grained, and of smooth, rather fine texture. It is easily worked, 
takes a nail well without splitting, and when finished has a satiny 
luster. Among woods showing only slight shrinkage, swelling, and 
warping due to varying atmospheric conditions, sugar pine ranks 
with the best. Although resinous, it is comparatively free from 
noxious elements which impart contaminating flavors and odors. 
WEIGHT, STRENGTH, SHRINKAGE, AND HARDNESS. 
The following figures on weight, strength, shrinkage, and hard- 
ness of sugar pine are largely the result of tests conducted by the 
Forest Service on material from five representatives trees cut in Ma- 
dera County, Cal. These tests were made at the Forest Products 
Laboratory, Madison, Wis., and the results are directly comparable 
with those obtained for the other commercial woods which have 
been studied. The test specimens used were small and clear, and 
for strength determinations were 2 by 2 inches in section. Bending 
specimens were cut 30 inches long; others were shorter, depending 
on the kind of test. 
TaBLe 1.—Shipping weights, sugar pine lumber, per 1,000 feet board measure. 
2-inch dimension. j-inech boards. 
4-foot lath 
(per thousand). 
Rough. SISIE, Rough. S18 or $28. 
Pounds. Pounds. Pounds. Pounds. Pounds. 
2, 650 2, 300 2, 500 2, 200 450 
Taste 2.—Average mechanical properties of small, clear, green sticks of sugar pine, 
western yellow pine, white pine, and Douglas fir. 
Compres- | Compres- 
: Poy sion par- | sion per- 
Static bending. allelto | pendicuiar 
to grain. to grain. 
Species. 
Fiber 2 : Fiber 
stress at Modulus ane Crushing stress at 
plsue of rupture. elasticity. strength. | ae 
: Lbs. per Lbs. per 1,000 ibs. Lbs. per Lbs. per 
sq. in. sq. in. per sq. in. Sq. in. Sq. in. 
Douglas fir (Pacific Northwest) ..........- 4, 920 7, 195 | Le Syee 3, 910 528 
Sugah pine (Caltfernta)io.)- 0. --2).247 .\-/sice% 3, 330 5, 270 966 2, 600 353 
White pine (Wisconsin) 2G. 2 emcees 3, 410 5, 310 | 1,073 2, 720 | 314 
Western yellow pine (California)........-- | 3, 180 5,180 | ne 8 2,420 | 326 
TABLE 3.—Shrinkage of small, clear pieces of sugar pine, western yellow pine, whrie pine, 
and Douglas jir from green to oven-dry SOLE: 
Species. 
Wouplastenr, Geaciiie Nancinwest)) cm. < t/scee sone Su. ear eter 0 
Sugar pine (California) 
White pine (Wisconsin) 
Miestern yellowspine (Califormia)i {se foes). oe a AE Oe 
In volume.| Radial Tangential. 
Per cent Per cent. Per cent. 
1a 5.0 7.8 
8.4 2.9 5.6 
7.8 282 5.9 
11.5 4.3 Use 
