 | American Society of Mechanical Engineers - 1898 - 1122 стор.
...must not absorb more than ten per cent, of its weight of water during 100 hours of submersion. -/. All elbows must be made for the purpose, and not bent...outlet ; the bends at the outlets not being counted. UNLINED METAL CONDUITS. j.. Plain iron or steel pipes of equal thickness, or of equal strength, to... | |
 | Francis Bacon Crocker - 1901 - 528 стор.
...submersion. /. 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...outlet, the bends at the outlets not being counted. UNI.INED METAL CONDUITS. j. Plain iron or steel pipes of equal thickness and strengths specified for... | |
 | Francis Bacon Crocker - 1901 - 528 стор.
...withdrawn, from the pipe. k. AH 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...quarter bends from outlet to outlet, the bends at the outlet not being counted. 50. Wooden Moldings — (For wiring rules, see No. 24.) a. Must have, both... | |
 | Horatio Alvah Foster - 1901 - 1018 стор.
...withdrawn from the pipe. k. 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...quarter bends from outlet to outlet, the bends at the outlet not being counted. 5O. Wooden Moldings — (For wiring rules, see _Yb. 24.) a. Must have, both... | |
 | 1902 - 742 стор.
...withdrawn from the pipe. k. 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 3£ inches. Must have not more than the equivalent of 4 quarter-bends from outlet to outlet, the bends... | |
 | 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.
...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 four quarter bends from outlet to outlet, the bends at outlets not being counted Each length of conduit, whether insulated or uninsulated, should have the... | |
 | Arthur Vaughan Abbott - 1904 - 754 стор.
...be made, and not bent from lengths of pipe. The inner radius of any elbow must not be less than 3i inches. Must have not more than the equivalent of...outlet, the bends at the outlets not being counted. 141. 42. Wooden Moldings. a. Must have, both inside and outside, at least two coats of waterproof paint,... | |
 | 1906 - 582 стор.
...will not be injured. The radius of the curve of the inner edge of any elbow not to be less than 3i inches. Must have not more than the equivalent of...outlet, the bends at the outlets not being counted. 47. While a conduit system is considered merely as a system of raceways for the wires, if it is properly... | |
 | 1905 - 484 стор.
...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 four quarter bends from outlet to outlet, the bends at outlets not being counted. Each length of conduit, whether insulated or uninsulated, should have the... | |
| |
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 not to be less than three and one-half inches. 
