| 8,570 | 1,219,000 | 1.20 | 11.7 | 30.7 | | Osage orange | 7,760 | 13,660 | 1,329,000 | 2.53 | 37.9 | 101.7 | | Sycamore | 2,820 | 6,300 | 961,000 | .51 | 7.1 | 13.6 | | Tupelo | 4,300 | 7,380 | 1,045,000 | 1.00 | 7.8 | 20.9 | | | | | | | | | | Conifers | | | | | | | | | | | | | | | | Arborvitae | 2,600 | 4,250 | 643,000 | .60 | 5.7 | 9.5 | | Cedar, incense | 3,950 | 6,040 | 754,000 | | | | | Cypress, bald | 4,430 | 7,110 | 1,378,000 | .96 | 5.1 | 15.4 | | Fir, alpine | 2,366 | 4,450 | 861,000 | .66 | 4.4 | 7.4 | | amabilis | 4,060 | 6,570 | 1,323,000 | | | | | Douglas | 3,570 | 6,340 | 1,242,000 | .59 | 6.6 | 13.6 | | white | 3,880 | 5,970 | 1,131,000 | .77 | 5.2 | 14.9 | | Hemlock | 3,410 | 5,770 | 917,000 | .73 | 6.6 | 12.9 | | Pine, lodgepole | 3,080 | 5,130 | 1,015,000 | .54 | 5.1 | 7.4 | | longleaf | 5,090 | 8,630 | 1,662,000 | .88 | 8.1 | 34.8 | | red | 3,740 | 6,430 | 1,384,000 | .59 | 5.8 | 28.0 | | shortleaf | 4,360 | 7,710 | 1,395,000 | | | | | sugar | 3,330 | 5,270 | 966,000 | .66 | 5.0 | 11.6 | | west, yellow | 3,180 | 5,180 | 1,111,000 | .52 | 4.3 | 15.6 | | White | 3,410 | 5,310 | 1,073,000 | .62 | 5.9 | 13.3 | | Redwood | 4,530 | 6,560 | 1,024,000 | | | | | Spruce, | | | | | | | | Engelmann | 2,740 | 4,550 | 866,000 | .50 | 4.8 | 6.1 | | red | 3,440 | 5,820 | 1,143,000 | .62 | 6.0 | | | white | 3,160 | 5,200 | 968,000 | .58 | 6.6 | | | Tamarack | 4,200 | 7,170 | 1,236,000 | .84 | 7.2 | 30.0 | |---------------------------------------------------
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Kinds of Loads

There are various ways in which beams are loaded, of which the following are the most important: 

(1) Uniform load occurs where the load is spread evenly over the beam.

(2) Concentrated load occurs where the load is applied at single point or points.

(3) Live or immediate load is one of momentary or short duration at any one point, such as occurs in crossing a bridge.