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