shall be shut off, the oil let out, the cylinders promptly opened at
each end, and the timber immediately removed from the cylinder.

In the erection of timbers the sap side must be turned up, and framing
or cutting of timbers shall not be permitted, if avoidable. All cut
surfaces of timbers shall be saturated with hot asphaltum, thinned with
creosote oil. The heads of piles when cut shall be promptly coated with
the hot asphaltum and oil, even though the cut-off be temporary.


METHOD OF TESTING.

The tests were made on a Riehlé 100,000-lb. machine in the Experimental
Engineering Laboratory of Tulane University of Louisiana. The machine is
provided with a cast-iron beam for cross-bending tests. The distance
between supports was 12 ft. The method of support was as follows: Each
end of the beam was provided with a steel roller which rested on the
cast-iron beam of the testing machine, while above the roller, and,
directly under the beam tested, there was a steel plate 6 by 8 in. in
area and 1 in. thick. The area was sufficiently great to distribute the
load and prevent the shearing of the fibers of the wood. The head of the
Riehlé machine is 10 in. wide. A plate, 3/8 in. thick, 6 in. wide and 18
in. long, was placed between the head of the machine and the beam
tested.

[Illustration: FIG. 1.--DEFLECTON CURVES BEAM I]

[Illustration: FIG. 2.--DEFLECTON CURVES BEAM II]