Publisher's Synopsis
Excerpt from Transactions of the American Society of Civil Engineers, Vol. 56: June, 1906
Heat applied during the treatment appears to be the only feature of the creosoting process which affects the strength of the timber under treatment, and the maximum temperature should be the least which is consistent with the required injection. The process sub jects the material to heat during the entire period of treatment, but the maximum temperature occurs during the initial or steaming process. The pressure of the steam applied determines the length of the steaming process, also the degree to which the succeeding vacuum extracts moisture and sap from the load, and has a direct bearing upon the total period of treatment and the capacity of the load to take oil. Results at the Pensacola Navy Yard indicate that yellow pine piling which was subjected to a steam pressure of 40 lb. Was very much more brittle and friable than was similar piling treated with the same quantity of oil, but which was steamed at a pressure of 15 lb.
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