=======================================================

====================+
|   |  b   |   h   |   I   |     loads:       |S = (Plc)/(4I) |  d,   |
|   |      |       |       |                 |               |inches.|
|   |------+-------+-------+-----------------+--------------

-+-------+
1  | 2 |  3   |   4   |   5   |    6   |   7    |   8   |   9   |  10   |
------+---+------+-------+-------+--------+--------+-------+

-------+-------+
I    | B | 6.28 | 15.94 | 2,120 | 22,000 | 45,900 | 2,975 | 6,200 | 0.41  |
I    | T | 6.00 | 15.69 | 1,934 | 20,000 | 38,000 | 2,915 | 5,540 | 0.465 |
|   |      |       |       |        |        |       |       |       |
II[A]| T | 6.37 | 15.81 | 2,098 | 20,000 | 43,450 | 2,722 | 5,918 | 0.380 |
II   | B | 6.41 | 16.41 | 2,360 | 16,000 | 25,040 | 1,999 | 3,130 | 0.430 |
|   |      |       |       |        |        |       |       |       |
III   | T | 5.88 | 15.68 | 1,871 | 24,000 | 45,130 | 3,608 | 6,785 | 0.535 |
III   | B | 5.88 | 15.90 | 1,965 | 21,000 | 35,190 | 3,054 | 5,120 | 0.515 |
|   |      |       |       |        |        |       |       |       |
IV   | T | 6.00 | 15.43 | 1,835 | 22,000 | 38,425 | 3,320 | 5,810 | 0.465 |
IV   | B | 6.12 | 15.87 | 2,032 | 22,000 | 35,500 | 3,090 | 4,983 | 0.660 |
|   |      |       |       |        |        |       |       |       |
V   | B | 6.00 | 16.00 | 2,048 | 22,000 | 47,000 | 3,090 | 6,610 | 0.400 |
V[A]| T | 6.00 | 15.87 | 1,999 | 14,000 | 22,050 | 1,998 | 3,145 | 0.315 |
|   |      |       |       |        |        |       |       |       |
VI[A]| B | 5.50 | 15.75 | 1,790 | 22,000 | 51,330 | 3,484 | 8,925 | 0.450 |
VI[A]| T | 5.87 | 15.62 | 1,865 | 20,000 | 44,000 | 3,013 | 6,627 | 0.410 |
|   |      |       |       |        |        |       |       |       |
VII   | B | 6.56 | 15.62 | 2,083 | 34,000 | 51,900 | 4,580 | 6,985 | 0.620 |
VII[A]| T | 6.22 | 15.62 | 1,975 | 20,000 | 49,000 | 2,845 | 6,970 | 0.380 |
============================================================

===============+

[Footnote A:  Failed in longitudinal shear.]

==============================================
E     |      |
|      |
-----------+      |
11     |  12  |   Remarks.
-----------+------+---------------------------
1,575,000  | 50.2 | } Close-grained pine,
1,383,000  | 47.5 | }  long-leaf.
|      |
1,562,000  | 40.5 | } Coarse loblolly,
979,000  | 42.2 | }  large knots.
|      |
1,489,000  | 40.4 | } Close-grained, long-leaf
1,288,000  | 44.2 | }  no knots.
|      |
1,601,000  | 40.8 | } Loblolly, with
1,017,000  | 41.5 | }  knots.
|      |
1,670,000  | 47.2 | } Long-leaf yellow
1,382,000  | 42.1 | }  pine.
|      |
1,695,000  | 50.2 | } Long-leaf yellow
1,625,000  | 45.2 | }  pine.
|      |
1,637,000  | 43.7 | } Long-leaf yellow
1,658,000  | 40.2 | }  pine.
==============================================

The deflection was measured on both sides of each beam by using silk threads stretched on each side from nails driven about 2 in. above the bottom of the beam and directly over the rollers which formed the supports.  From a small piece of wood, tacked to the bottom of the beam at its center and projecting at the sides, the distance to these threads was measured.  These measurements were taken to the nearest hundredth of an inch.  The mean of the deflections was taken as the true deflection for any load.