National Bureau of Standards Circular, Τεύχη 463-464U.S. Department of Commerce, National Bureau of Standards, 1948 - 190 σελίδες |
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Σελίδα 45
... inch above the original cut and stood in water will absorb a sufficient amount of water or reduce their ex- treme flammability for the few days the tree will be indoors . The water level should be kept above the cut surface during that ...
... inch above the original cut and stood in water will absorb a sufficient amount of water or reduce their ex- treme flammability for the few days the tree will be indoors . The water level should be kept above the cut surface during that ...
Σελίδα 63
... inches if the stoves are to be placed on com- bustible floors ; locating such appliances well away from combustible partitions or woodwork , and , where this cannot be done , placing screens to protect the adjacent woodwork ; placing ...
... inches if the stoves are to be placed on com- bustible floors ; locating such appliances well away from combustible partitions or woodwork , and , where this cannot be done , placing screens to protect the adjacent woodwork ; placing ...
Σελίδα 89
... inches from a wooden wall the wall will not be heated to an unsafe temperature . These appliances designed to be ... inch space should be left in every case . This applies to lath - and - plaster walls no less than to wooden partitions ...
... inches from a wooden wall the wall will not be heated to an unsafe temperature . These appliances designed to be ... inch space should be left in every case . This applies to lath - and - plaster walls no less than to wooden partitions ...
Σελίδα 92
... inches of water pressure with occasional minima of 3 and maxima of 7 inches . The orifice should then be so adjusted that 24 cubic feet of gas ( 24x500 = 12,000 ) will flow through the orifice per hour when the pressure back of the ...
... inches of water pressure with occasional minima of 3 and maxima of 7 inches . The orifice should then be so adjusted that 24 cubic feet of gas ( 24x500 = 12,000 ) will flow through the orifice per hour when the pressure back of the ...
Σελίδα 106
... inch gal- vanized - iron pipe into the ground to a depth of 4 or 5 feet and tying it to the fence with wire . The electrical continuity should also be broken up at intervals of 1,000 feet by cutting the wires and inserting short lengths ...
... inch gal- vanized - iron pipe into the ground to a depth of 4 or 5 feet and tying it to the fence with wire . The electrical continuity should also be broken up at intervals of 1,000 feet by cutting the wires and inserting short lengths ...
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