TABLE 79.— Mechanical Properties of Conifers Grown in U. S. (English Units) 135 



Common and botanical 

 name. 



Cedar, incense 



(Libocedri4s decurrens) 

 Cedar, Port Orford 



(Chamaecyparis law- 

 son i ana) 

 Cedar, western red 



(Thuja plicala) 

 Cedar, white 



(Thuja occidenlalis) 

 Cypress, bald 



(Taxodium distichum) 

 Fir, amabilis 



(Abies amabilis) 

 Fir, balsam 



(Abies balsamea) 

 Fir, Douglas (i) 



(Pseudotsuga taxifolia) 

 Fir, Douglas (2) 



(Pseudotsuga taxifolia) 

 Fir, grand 



(Abies grandis) 

 Fir, noble 



(Abies nobilis) 

 Fir, white 



(Abies concolor) 

 Hemlock (eastern) 



(Tsuga canadensia) 

 Hemlock (western) 



(Tsuga helerophylla) 

 Larch, western 



(Larix occidenlalis) 

 Pine, Cuban 



(Pinus helerophylla) 

 Pine, loblolly 



(Pinus taeda) 

 Pine, lodgepole 



(Pinus contorta) 

 Pine, longleaf 



(Pinus palustris) 

 Pine, Norway 



(Pinus resinosa) 

 Pine, pitch 



(Pinus rigida) 

 Pine, shortleaf 



(Pinus echinata) 

 Pine, sugar 



(Pinus lambertiana) 

 Pine, western white. . . . 



(Pinus monlicola) 

 Pine, western yellow . . . 

 (Pinus ponderosa) 



Pine, white 



(Pinus strobus) 

 Spruce, red 



(Picea rubens) 

 Spruce, Sitka 



(Picea sikhensis) 

 Tamarack 



(Larix laricina) 

 Yew, western 



(Taxus brevifolia) 



Locality 

 where grown. 



Cal. and Ore 

 Ore. 



Wash, and 



Mont. 

 Wis. 



La. and Mo. 



Ore. and 

 Wash. 

 Wis. 



Wash, and 



Ore. 

 Mont, and 



Wyo. 

 Mont, and 



Ore. 

 Ore. 



Cal. 



Tenn. and 



Wis. 

 Wash. 



Mont, and 



Wash. 

 Fla. 



Fla., N. and 



S. Car. 

 Col., Mont. 



and Wyo. 

 Fla., La. and 



Miss. 

 Wis. 



Tenn. 



Ark. and La. 



Cal. 



Mont. 



Col., Mont., 

 Ariz., Wash 

 and Cal. 



Wis. 



N. H. and 



Tenn. 

 Wash. 



Wis. 



Wash. 



52 



39 



55 



87 



102 



117 



36 



33 



94 



41 



156 



105 



71 



58 



47 



70 



65 



47 



54 



8S 



64 



123 



58 



95 



74 

 43 

 53 

 52 



44 



Weight. 



Green 



Air- 

 dry. 



lb/ft' 



45 

 39 



27 



28 



48 



47 



45 



38 



34 



44 



31 



56 



48 



41 



48 



53 



54 



39 



50 



42 



54 



50 



50 



39 



46 



39 



34 

 33 

 47 

 54 



3° 



27 



25 



34 



32 



27 



26 



26 



29 



29 



37 



45 



39 



28 



43 



34 



35 



37 



26 



3° 



28 



27 

 28 

 26 



Static bending. 



3900 

 3900 



3300 



2600 



4000 



3900 



3000 



5000 



3600 



3600 



3400 



3900 



4200 



34°o 



4600 



5600 



4400 



3000 



5400 



3700 



3700 



4500 



3300 



3500 



3100 



3400 

 3400 

 3000 

 4200 

 6500 



~.a 



-a S 



"oX 



•a 



6200 

 6800 



5200 



4200 



6800 



6300 



4900 



7800 



6400 



6100 



5700 



6000 



6700 



6100 



7500 



8800 



7.500 



5500 



8700 



6400 



6700 



8000 



5300 



5700 



5200 



5300 

 5700 

 5500 

 7200 



IOIOO 



Impact 

 bending. 



Compression. 



Shear. 



Parallel 

 to grain 



840 

 1500 



95° 

 640 

 1190 

 *3°° 

 960 

 15S0 

 1 180 

 1300 

 1280 

 1130 

 1120 

 1 190 

 1350 

 1630 

 1380 

 toSo 

 1630 

 1380 

 1120 

 1450 

 970 

 1330 



IOIO 



1070 



1 180 

 1 180 



1240 



990 



P- 



limit. 



lb/in" 



11 



7300 

 9300 



7100 



53oo 



8000 



7800 



6900 



9400 



9100 



8100 



7900 



7200 



7900 



7800 



9400 



1 1 300 



95oo 



7200 



10800 



7500 



9100 



1 1 200 



6700 



7600 



6700 



6500 

 7200 

 7900 

 7800 

 13100 



"3~< 



<u.a 



13 



2870 

 397° 



2500 



1420 



3100 



2380 



2220 



3400 



2520 



2680 



2370 



2610 



2710 



2290 



3250 



3950 



2870 



2100 



3840 



2470 



2100 



3650 



2340 



2770 



2080 



2370 

 2360 

 2280 

 3010 

 3400 



E.a 



§■3 



14 



460 

 380 



310 



290 



470 



320 



210 



53o 



45o 



340 



310 



440 



500 



35o 



560 



59° 



55° 



310 



600 



360 



510 



480 



350 



300 



340 



310 

 35o 

 330 



Ten- 

 sion. 



■f*J 



15 



830 

 880 



720 



620 



820 



670 



610 

 910 

 880 

 700 

 700 

 730 

 880 

 810 

 920 



1030 

 900 

 690 



1070 

 780 

 950 

 890 

 710 

 710 

 680 



640 



770 

 780 

 860 

 1620 



280 

 240 



210 



240 



180 I 



200 



350 



»30 



180 



;0o 



260 



260 



230 



290 



280 



220 



290 



190 



350 



330 



270 



250 



280 



260 

 220 

 230 

 260 

 45° 



Column Notes (continued) . — (7) recommended allowable working stress (interior construction): J tabular value; experi- 

 mental results on tests of air-dry timber in small clear pieces average 50 percent higher; kiln-dry, double tabular values, till) 

 repeated falls of 50-lb. hammer from increasing heights; 11-12, 203.2-mm (8 in.) long specimen loaded on ends with delormations 

 measured in a 152.4-mm (6 in.) gage length; (12) allowable working stress J tabular crushing strength; (13) 152.4-mm (0 in.) long 

 block loaded on its side with a central bearing area of 2s8o.6-mm 2 (4 in 2 ) allowable working stress, I tabular value. (14) so.s-mm 

 by 50.8-mm (2 in.) projecting lip sheared from block; allowable working stress, | tabular value; (15) 63 ; 5-mm (2* in.) specimen wittj 

 25.4-mm (1 in.) free loaded length; allowable working stress, | tabular value. (16-17) for values in lbs. multiply values of metru 

 tables by 2.2. 



Smithsonian Tables. 







