Pamphlets on Wood Preservation, Volume 21900 - Wood |
Common terms and phrases
absorption ammonium ammonium phosphate amount average beech brush treated catalpa cells chemical City Eng coal tar coal-tar condition cost creosote oil cubic foot cylinder dead oil Douglas fir durability experiments feet fence posts figures Forest Service fungi fungus green Hasselmann heartwood heated hot creosote ignition impregnating fluid increase injected inspection kyanized length loblolly pine locust longleaf longleaf pine material ment method moisture noble fir obtained oil of coal open tank Osage orange paint pavement peeled penetration percent sound piling placed plants plates pounds preservative treatment pressure rail railroad Railway red cedar removed salt sapwood seasoning shingles shortleaf shortleaf pine soft maple species specimens Split square yards steam sulphate Table temperature tion Total track treated poles treated timber trees untreated vacuum white cedar willow posts wood block Wood Preservation zinc chloride
Popular passages
Page 62 - Iowa State Fire Prevention Association. Kansas Inspection and Fire Prevention Office. Kentucky Actuarial Bureau. Kentucky State Fire Prevention Association. Louisiana Fire Prevention Bureau. Louisiana State Society for the Reduction of Fire Waste. Mainland Fire Underwriters' Association of British Columbia.
Page 81 - ... company have no claim on the contractor as specified in condition No. 13. In case of any dispute arising between the contractor and the company or their agents as to the meaning of any of the terms and conditions of this contract, the decision of the company's engineer shall be final and binding upon all parties. 17. The contractor shall, if required, enter into and sign a formal contract with the directors and find good and sufficient surety to guarantee its proper fulfilment; the expense of...
Page 86 - He will be permitted to purchase the solution of zinc chloride and the carbolized oil of coal tar only from such factories whose samples have been approved by the management of the railways. The railway management reserves the right to test the fluids used at any time. It is specified that the average absorption of impregnating fluid contained in every charge of the cylinder shall be the following: (A) Absorption of 35 kgr. (77 Ibs.) for each tie of the first class, length of 2.70 m. (8.85ft.). (B)...
Page 62 - Underwriters' Association of the Middle Department, Underwriters* Association of New York State, Underwriters' Bureau of Middle and Southern States, Underwriters...
Page 22 - A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours. 23. These pats, to satisfactorily pass the requirements, shall remain firm and hard, and show no signs of distortion, checking, cracking, or disintegrating.
Page 75 - ... cu. cm. soda solution is exactly the quantity . corresponding to the free acid present in the chloride of zinc solution. Should there be required for this test more than 0.4 cu. cm. of the one-tenth normal soda solution, then the percentage of free acid is too high in the chloride of zinc solution, and such solution must not be used for impregnation. Testing for Iron. Take 10 cu.
Page 75 - Celsius are to be filled into a retort, a thermometer is to be inserted, but in such a manner that the quicksilver ball shall be in or below the neck of the retort but shall not touch the oil, or will not be covered by the same. The retort must be heated slowly, until all the water, which is contained in nearly every tar oil, is evaporated. Stronger heat can then be applied to the retort, but it must be so regulated that in one second two drops will distill over. The distilled product will be caught...
Page 85 - The solution contains 1.26 per cent of metallic zinc. The coal-tar oil used must not contain over 1 per cent of oils that boil below 125° Cent. (257° Fahr.). It must be so little volatile that its boiling point lies mainly between 150° and 400° Cent. (302° and 752° Fahr.). In no case is it permissible to have more than 25 per cent of its weight volatilized below 235 Cent. (455 Fahr. ) . It must contain at least 20 to 25 per cent of acid substances (creosote or oils resembling carbolic acid)...
Page 86 - Ibs.) will be made for shortage shown by this weighing test. In case the shortage amounts to more than one-sixth of the absorption specified the impregnation must be repeated. If, on the other hand, the weighing shows that the ties have absorbed more than the amount specified. a bonus of 15 pfennigs for every 10 kgr.
Page 62 - Minnesota State Fire Prevention Association. Mississippi Inspection and Advisory Rating Company. Mississippi Society for the Prevention of Fires. Missouri Inspection Bureau.