 | American Institute of Electrical Engineers - 1897 - 710 стор.
...hours of submersion. i. All elbows must be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow not to be less than three and one-half inches. Must have not more than the equivalent of four quarter bends from outlet... | |
 | American Society of Mechanical Engineers - 1898 - 1122 стор.
...withdrawn from the pipe. I: All elbows must be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow not to be less than three and one-half inches. Must have not more than the equivalent of four quarter bends from outlet... | |
 | Francis Bacon Crocker - 1901 - 528 стор.
...galvanized, or the interior surfaces coated or enameled, to prevent oxidation, with some substance which will not soften so as to become sticky and prevent...of the inner edge of any elbow not to be less than three and one-half inches. Must have not more than the equivalent of four quarter bends from outlet... | |
 | Horatio Alvah Foster - 1901 - 1018 стор.
...galvanized, or the interior surfaces coated or enameled, to prevent oxidation, with some Bubstance which will not soften so as to become sticky and prevent...of the inner edge of any elbow not to be less than three and one-half inches. Must have not more than the equivalent of four quarter bends from outlet... | |
 | Francis Bacon Crocker - 1901 - 514 стор.
...quarter bends from outlet to outlet, the bends at the outlets not being counted. UNLINED METAL CONDUITS. k. All elbows or bends must be so made that the conduit...of the inner edge of any elbow not to be less than three and one-half inches. Must have not more than the equivalent of four quarter bends from outlet... | |
 | Francis Bacon Crocker - 1901 - 528 стор.
...will not soften so as to become sticky and prevent wire from being withdrawn, from the pipe. k. AH elbows or bends must be so made that the conduit will...of the inner edge of any elbow not to be less than three and one-half inches. Must have not more than the equivalent of four quarter bends from outlet... | |
 | Harry Cooke Cushing - 1902 - 204 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipes. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not be more than the equivalent of... | |
 | American School (Lansing, Ill.) - 1903 - 320 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not be more than the equivalent of... | |
 | 1905 - 484 стор.
...hours of submersion. All elbows should be made for the purpose, and not bent from lengths of pipe. The radius of the curve of the inner edge of any elbow should not be less than three and one-half inches. There should not he more than the equivalent of... | |
 | 1906 - 544 стор.
...manner as to be accessible. h. All elbows or bends must be so made that the conduit or lining of same will not be injured. The radius of the curve of the inner edge of any elbow hot to be less than 8a- inches. Must have not more than the equivalent of four quarter bends from outlet... | |
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All elbows or bends must be so made that the conduit will not be injured. The radius of the curve of the inner edge of any elbow not to be less than three and one-half inches. 
