Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 | Page 4

Growth. |Section,|Span,| | of | | B | C | D | | | | in | in | |seasoning.| | | | | | | | inches.|feet | | | | | | | +---+---------+--------+-----+---------+----------+-------+---+-----+----+ | | | 6 by 7| | | | | | | | | | | 6 by 10| 10 | | | | | | | | 1 |South | 4 by 12| to | Square | Green |Average| | 48.0| 5.7| | |Carolina.| 6 by 16| 15.5| edge | |Maximum| 42| 92.1|11.7| | | | 8 by 14| | | |Minimum| | 30.2| 2.3| | | | 8 by 16| | | | | | | | +---+---------+--------+-----+---------+----------+-------+---+-----+----+ | | | 6 by 7| | | | | | | | | | | 4 by 12| 10 | | | | | | | | 2 |South | 6 by 10| to | Square |Partially |Average| | 27.7| 5.0| | |Carolina.| 6 by 16| 16 | edge |air dry. |Maximum| 18| 29.2| 8.2| | | | 8 by 16| | | |Minimum| | 25.5| 2.5| | | |10 by 16| | | | | | | | +---+---------+--------+-----+---------+----------+-------+---+-----+----+ | | | 6 by 7| 10 | | | | | | | | |South | 4 by 12| to | Square |Partially |Average| | 21.0| 5.6| | 3 |Carolina.| 6 by 10| 15 | edge |air dry. |Maximum| 19| 24.9|17.2| | | | 6 by 16| | | |Minimum| | 15.0| 2.7| +---+---------+--------+-----+---------+----------+-------+---+-----+----+ | | | | 6 | | |Average| | 22.4| 4.8| | 4 |Virginia.| 8 by 8| to | Square |Partially |Maximum| 12| 27.7| 8.8| | | | | 16 | edge |air dry. |Minimum| | 17.8| 2.5| +---+---------+--------+-----+---------+----------+-------+---+-----+----+ | | | | 6 | | |Average| | 64.0| 3.0| | 5 |Virginia.| 8 by 8| to | Square | Green |Maximum| 17|100.5| 4.0| | | | |15.5 | edge | |Minimum| | 38.8| 2.5| +---+---------+--------+-----+---------+----------+-------+---+-----+----+
LONG-LEAF PINE.
+---+---------+--------+-----+---------+----------+-------+---+-----+----+ | | | | | | |Average| | 25.0|13.7| | 6 |South | 6 by 8| 15 |Merchant-|Partially |Maximum| 22| 40.3|25.4| | |Carolina.|10 by 16| |able |air dry |Minimum| | 17.3| 6.2| +---+---------+--------+-----+---------+----------+-------+---+-----+----+ | | | | | | |Average| | 27.3|18.0| | 7 |Georgia. |10 by 12| 15 |Merchant-|Partially |Maximum| 22| 34.5|29.0| | | | | |able |air dry. |Minimum| | 20.0|11.0| +========================================================================+
+=====================================================================+ | | Locality| | F | | | | | | | | | of | +---------+ | | | | | | | A | Growth. | E | | | I | J | K | L | M | Remarks. | | | | | G | H | | | | | | | | | | | | | | | | | | | +---+---------+----+----+----+-----+------+-----+----+---+------------+ | | | | | | | | | | |Moisture | | | | | | | | | | | |above | | 1 |South |0.50|46.2|31.2|3,150| 5,580|1,426|0.45| |saturation | | |Carolina.|0.60|56.8|37.5|5,210| 8,460|1,920|0.99| 7 |point in | | | |0.40|35.6|25.0|1,675| 3,120| 905|0.07| |all cases. | | | | | | | | | | | | | +---+---------+----+----+----+-----+------+-----+----+---+------------+ | | | | | | | | | | | | | | | | | | | | | | | | | 2 |South |0.50|40.0|31.2|3,380| 5,650|1,435|0.45| |Moisture | | |Carolina.|0.55|43.7|34.4|4,610| 8,090|1,880|0.76| 0 |from 25 to | | | |0.45|35.6|28.1|2,115| 3,600|1,152|0.20| |30 per cent.| | | | | | | | | | | | | +---+---------+----+----+----+-----+------+-----+----+---+------------+ | | | | | | | | | | | | | |South |0.50|37.5|31.2|2,970| 5,690|1,340|0.39| |Moisture | | 3 |Carolina.|0.58|45.6|36.2|4,850| 8,100|2,040|0.69| 2 |less than | | | |0.41|31.2|25.6|1,730| 2,910| 906|0.10| |25 per cent.| +---+---------+----+----+----+-----+------+-----+----+---+------------+ | | |0.46|35.6|28.8|3,260| 5,180|1,180|0.51| | | | 4 |Virginia.|0.58|43.1|36.2|5,300| 8,950|1,728|1.05| 0 | | | | |0.37|30.0|23.1|1,280| 2,180| 606|0.13| | | +---+---------+----+----+----+-----+------+-----+----+---+------------+ | | |0.43|43.7|26.9|1,935| 3,490| 744|0.31| |Very rapid | | 5 |Virginia.|0.51|51.9|31.9|3,185| 4,720|1,193|0.78| 0 |growth; poor| | | |0.35|35.0|21.9| 956| 2,180| 357|0.12| |quality. | +---+---------+----+----+----+-----+------+-----+----+---+------------+
LONG-LEAF PINE.
+---+---------+----+----+----+-----+------+-----+----+---+------------+ | | |0.58|45.6|36.2|3,800| 7,160|1,560|0.53| | | | 6 |South |0.76|60.0|47.5|4,970|10,020|2,010|0.78| 9 | | | |Carolina.|0.50|39.4|31.2|2,220| 5,450|1,190|0.21| | | +---+---------+----+----+----+-----+------+-----+----+---+------------+ | | |0.69|54.7|42.9|5,581| 8,384|1,820| -- | |Excellent | | 7 |Georgia. |0.79| -- |49.4|9,600|11,410|2,920| -- | 6 |merchantable| | | |0.50| -- |31.4|3,547| 4,836|1,167| -- | |grade. | +=====================================================================+
TABLE 3.--LOBLOLLY PINE.--BENDING TESTS ON BEAMS SEASONED UNDER DIFFERENT CONDITIONS.
(8 by 16-in. section; 13-1/2 to 15-ft. span.)
Columns in table:
A. Number of tests. B. Fiber stress at elastic limit, in pounds per square inch. C. Modulus of rupture, in pounds per square inch. D. Longitudinal shear at maximum load, in pounds per square inch. E. Modulus of elasticity, in thousands of pounds per square inch. F. Percentage of moisture. G. Rings per inch. H. Weight per cubic foot, oven dry, in pounds. I. Condition of seasoning.
==================================================================== | A | B |