Show CREOSOTE OIL AS WOOD preservative the natural decay of wood under certain conditions has resulted in the present use of creosote oil to preserve it creosote oil is one of the best known wood preservatives because of its toxic or poisonous qualities to the so sd 1 called plant fungi fung i that causes rot the four requirements cements for the growth of the fungi are air moisture favorable temperature and food to prevent decay it is necessary to deprive the fungus of one or more of these four requirements if wood is continually saturated with water it Is is deprived of air and the wood does not rot however the most effective way generally of prevent preventing in g decay is tc ao poison the food supply of the fun fungus us and upon this principle is based the use of wood preservatives preservatives fence posts that were of o f creosoted baltic pine and installed in england in 1855 are still standing and thoroughly serviceable after fifty four years of use one of the well known southern american railways installed a creosoted wood trestle in 1878 recently their engineer reported on the condition of this trestle and in closing his report summed up tip the benefits of creosoted timber in the following remark properly creosoted timber will be sound thirty years after it has been placed this estimate takes into account the failure of the timber structurally which in railroad ties is is the criterion of life rather than rot the united states forest service of the department of agriculture is responsible for the statement that douglas fir properly creosoted will never decay again one of the well known consulting timber cai engineers t inders of st louis mo says that all treatable wood particularly the sapwood when penetrated with a high grade coal tar creosote should last indefinitely in fact we have yet to see any timbers treated accordingly which have failed because of the satis satisfactory factor y results obtained through the commercial use of creosoted woods the continental pipe manufacturing company of seattle washinton washington b ton has been using for some years past the creosoting process in preserving 6 their wood pipe with most gratifying 6 results the use of creosoted staves is recommended only when pipe lines are intermittently used and when only partially full of water and in cases where the head or pressure is not sufficient to thoroughly saturate the pipe the general use of creosoted pipe by the united states reclamation service in their various projects and its adaptation generally by various arri irrigating abing states bespeaks well the service that has been obtained from this material |