LOCAL INSPECTORS-Continued. James W. Nicholson Thomas Kehoe, assistant Wm. F. Plietz, assistant Norfolk, Va. Grand Haven, Mich. Burlington, Vt. Thomas R. Craigie, San Francisco, Cal. Calvin G. Williams, New London, Conn. Wm. E. Linn, Baltimore, Md. Table of pressures allowable on boilers made since February 28, 1872. 45,000 tensile Diame- Thick 1-6, 7,500. 1-6, 8,333.3. 1-6, 9,166.6. 1-6, 10,000. 65,000 tensile 1-6, 11,666.6. ter of ness of boiler. plates. 20 20 20 20 20 20 Pres- per cent Pres- per cent Pres- per cent Pres- per cent Pres per cent Pres per cent sure. addi- sure. addi sure. addi sure. addi sure. addi sure. addi tional. tional. tional. tional. tional. 110.52 101.31 121.57 110.52 132.62 119.73 143.67 128.93 154.71 131.13 157.35 141.22 169.46 157.88 142.54 171.04 153.5 184.20 136.84 164.2 148.24 177.88 159.64 191.56 183.15 165.35 198.42 178.06 213.67 164.46 150.76 180.91 164.47 197.36 178.17 213.8 191.88 230.25 boiler. plates. 20 50,000 tensile strength. 1-6, 8,333.3. 55,000 tensile strength. Table of pressures allowable on boilers made since February 28, 1872-Continued. 45,000 tensile strength. 60,000 tensile strength. 1-6, 9,166.6. 1-6, 10,000. 65,000 tensile strength. 1-6, 10,833.3. 70,000 tensile strength. 1-6, 11,666.6. 20 20 sure. sure. addi sure. addi tional. tional. Pres- per cent Pres- per cent Pres- per cent Pres- per cent Pres- per cent Pres- per cent additional. |