Table of pressures allowable on boilers made since February 28, 1872-Continued. 50,000 tensile 1-6, 8,333.3. 1-6, 9,166.6. 1-6, 10,000. 1-6, 10,833.3. 1-6, 11,666.6. 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. Table of pressures allowable on boilers made since February 28, 1872-Continued. Diame- Thick 45,000 tensile strength. 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. tional. tional. additional. sure. 50,000 tensile strength. 55,000 tensile strength. Table of pressures allowable on boilers made since February 28, 1872-Continued. 1-6, 8,333.3. 1-6, 9,166.6. 60,000 tensile strength. 1-6, 10,000. 65,000 tensile strength. 1-6, 10,833.3. 70,000 tensile strength. 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. tional. additional. sure. 50,000 tensile strength. 55,000 tensile strength. Table of pressures allowable on boilers made since February 28, 1872-Continued. 45,000 tensile strength. 70,000 tensile strength. 60,000 tensile strength. Diame- Thick 1-6, 7,500. 1-6, 8,333.3. 1-6, 9,166.6. 1-6, 10,000. 65,000 tensile strength. 1-6, 10,833.3. 1-6, 11,666.6. 20 20 20 20 20 20 additional. sure. additional. sure. additional. Pres per cent Pres- per cent Pres- per cent Pres- per cent Pres- per cent sure. boiler. plates. 20 addi 50,000 tensile strength. 1-6, 8,333.3. 5,000 tensile strength. 1-6, 9,166.6. Table of pressures allowable on boilers made since February 28, 1872-Continued. 45,000 tensile strength. 20 20 20 20 20 sure. addi sure. Pres- per cent Pres- per cent Pres- per cent Pres- per cent Pres- per cent sure. Pres tional. |