Treatise on timber preservation with extracts from the best known authorities by San Francisco timber preserving company

Author:San Francisco timber preserving company. [from old catalog]
Language: eng
Format: epub, pdf
Tags: Wood, Creosote
Publisher: San Francisco, Cal., San Francisco timber preserving company
Published: 1902-03-25T05:00:00+00:00

the Old Colony Railroad, the late E. N. Winslow, wrote as follows about these piles:

" We have removed about 200 of the 700. The work was generally done with a rush, and in a careless manner; many of the piles were fitted, knots trimmed up, etc., after they were creosoted. I find they are eaten in patches and spots commencing apparently where the trimming was done. Upon examination, I find the outer portion of the piles, fromj4 to ]/2 inch in thickness, filled with creosote, today as limpid and odorous as when applied. Hence, I infer the attack has been made in almost every instance where the trimming or fitting was done." The experiment was considered a success, and has been continued, but all trimming of timber after treatment destined to be exposed to sea water is now recognized here, and abroad, as fatal to success, inasmuch as the teredo will attack any point unprotected by sufficient creosote, and will speedily make his way to the heartwood, which, in consequence of its density, can absorb but a small portion of this preservative."

Transactions American Society of C. E., Vol, XIV., Jan.-Dec, 1885, Page 289.

SELECTION OF PRESERVING PROCESS.

In view of the differing cost of the various antiseptics used, and of the price of timber in this country, where it is still much cheaper than in Europe, we believe that the method to be selected for preserving wood (if any) depends almost wholly upon its proposed subsequent exposure, and that it has been a mistake hitherto to look to a single process for all purposes. If the timber is to be exposed, in sea water, to the attacks of the teredo navilis and lim-

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