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Halaman 811
1 or for not less than 9 months . less than 6 months . ... The skids shall be of such height that no part of any pole shall be less than one ( 1 ) foot above the surface of the soil . Handling of Treated Poles : The protection of these ...
1 or for not less than 9 months . less than 6 months . ... The skids shall be of such height that no part of any pole shall be less than one ( 1 ) foot above the surface of the soil . Handling of Treated Poles : The protection of these ...
Halaman 812
Method of Treatment and Results General : The pole butts shall be treated by immersion in a bath of hot preservative for not less than four ( 4 ) hours , followed by an immersion in a bath of unheated preservative for not less than one ...
Method of Treatment and Results General : The pole butts shall be treated by immersion in a bath of hot preservative for not less than four ( 4 ) hours , followed by an immersion in a bath of unheated preservative for not less than one ...
Halaman 1219
than that of high - grade coal , a less weight of oil being Numerous attempts have been made to prepare required to give the same heating effect . graphic charts from which the relative costs of coal " ( b ) Space required for storage ...
than that of high - grade coal , a less weight of oil being Numerous attempts have been made to prepare required to give the same heating effect . graphic charts from which the relative costs of coal " ( b ) Space required for storage ...
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amount arms arrangement average boiler burners capacity carried cause cent circuit close coal Committee Company conductor connection considerable construction cost covering desired draft economizer effect efficiency Electric Engineering equipment experience feed feet fire fuel furnace give given ground wires heat higher hour important inch increased indicate installed insulators interest iron less Light lignite limit load loss lower manufacturers material means mechanical method necessary obtained operation pins pipe plant poles possible practice present pressure problem production pulverized pump reduced removed shown shows specifications standard station steam steel stoker superheat supply surface TABLE tank temperature tion treated treatment trouble tubes turbine units usually valve voltage wood