----------+---------+---------------+---------------+---------------
| | Pressure. | Pressure. | Pressure.
| +-------+-------+-------+-------+-------+-------
Diameter |Thickness|Single |Double |Single |Double |Single |Double
of | of |Riveted|Riveted|Riveted|Riveted|Riveted|Riveted
Boiler. | Plates. +-------+-------+--------+------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
----------+---------+-------+-------+-------+-------+-------+-------
36 Inches.| .21 | 87.5 |105. | 97.21 |116.65 |106.94 |128.3
| .23 | 95.83 |114.99 |106.47 |127.76 |117.12 |140.54
| .25 |104.16 |124.99 |115.74 |138.88 |127.31 |152.77
| .26 |108.33 |129.99 |120.37 |144.44 |132.4 |158.88
| .29 |120.83 |144.99 |134.25 |161.11 |147.68 |177.21
| .33 |137.5 |165. |152.77 |183.32 |168.05 |201.66
| .35 |145.83 |174.99 |162.03 |194.43 |178.23 |213.87
| .375 |156.25 |187.5 |173.61 |208.33 |190.97 |229.16
+---------+-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,000 Tensile |70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .21 |116.66 |139.99 |126.38 |151.65 |136.11 |163.33
| .23 |127.77 |153.32 |138.41 |166.09 |149.07 |178.88
| .25 |138.88 |166.65 |150.46 |180.55 |162.03 |194.43
| .26 |144.44 |173.32 |156.48 |187.77 |168.51 |202.21
| .29 |161.11 |193.33 |174.53 |209.43 |187.90 |225.48
| .33 |183.33 |219.99 |198.61 |238.33 |213.88 |256.65
| .35 |194.44 |233.32 |210.64 |252.76 |226.84 |272.20
| .375 |208.33 |249.99 |225.69 |271.82 |243.05 |291.66
----------+---------+-------+-------+-------+-------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
| +-------+-------+-------+-------+-------+-------
40 Inches.| .21 | 78.75 | 94.50 | 87.49 |104.98 | 96.24 |115.48
| .23 | 86.25 |103.5 | 95.83 |114.99 |105.41 |126.49
| .25 | 93.75 |112.5 |104.16 |124.99 |114.58 |137.49
| .26 | 97.5 |117. |108.33 |129.99 |119.16 |142.99
| .29 |108.75 |130.5 |120.83 |144.99 |132.91 |159.49
| .3125 |117.18 |140.61 |130.2 |156.24 |143.22 |171.86
| .33 |123.75 |148.5 |137.49 |164.98 |151.24 |181.48
| .35 |131.25 |157.5 |145.83 |174.99 |160.41 |192.49
| .375 |140.62 |168.74 |156.24 |187.48 |171.87 |206.24
+---------+-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,0000 Tensile|70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .21 |105. |126. |113.74 |136.48 |122.49 |146.98
| .23 |115. |138. |124.58 |149.49 |134.16 |160.99
| .25 |125. |150. |135.41 |162.49 |145.83 |174.99
| .26 |130. |156. |140.83 | 68.99 |151.66 |181.99
| .29 |145. |174. |157.08 |188.49 |169.16 |202.99
| .3125 |156.25 |187.45 |169.27 |203.12 |182.29 |218.74
| .33 |165. |198. |178.74 |214.48 |192.49 |230.98
| .35 |175. |210. |189.58 |227.49 |204.16 |244.99
| .375 |187.5 |225. |203.12 |243.74 |218.74 |262.48
----------+---------+-------+-------+-------+-------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
| +-------+-------+-------+-------+-------+-------
42 Inches.| .21 | 75. | 90.00 | 83.32 | 99.99 | 91.66 |109.99
| .23 | 82.14 | 98.56 | 91.23 |109.51 |100.39 |120.46
| .25 | 89.28 |107.13 | 99.2 |119.04 |109.12 |130.94
| .26 | 92.85 |111.42 |103.17 |123.8 |113.49 |136.18
| .29 |103.57 |124.28 |115.07 |138.08 |126.57 |151.85
| .3125 |111.6 |133.92 |124. |148.8 |136.4 |163.68
| .33 |117.85 |141.42 |130.94 |157.12 |144.04 |172.84
| .35 |125. |150. |138.88 |166.65 |152.77 |183.32
| .375 |133.92 |160.7 |148.8 |178.56 |163.68 |196.40
+---------+-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,000 Tensile |70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .21 |100. |120. |108.33 |129.99 |116.66 |139.99
| .23 |109.52 |131.42 |118.65 |142.38 |127.77 |153.32
| .25 |119.04 |142.84 |128.96 |154.75 |138.88 |166.65
| .26 |123.8 |148.56 |134.12 |160.94 |144.44 |173.32
| .29 |138.09 |165.7 |149.6 |179.52 |161.11 |193.33
| .3125 |148.74 |178.56 |161.2 |193.44 |173.61 |208.23
| .33 |157.14 |188.56 |170.23 |204.27 |183.33 |219.99
| .35 |166.66 |199.99 |180.55 |216.66 |194.44 |233.32
| .375 |178.57 |214.28 |193.45 |232.14 |208.33 |249.99
----------+---------+-------+-------+-------+-------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
| +-------+-------+-------+-------+-------+-------
48 Inches.| .21 | 65.62 | 78.74 | 72.91 | 87.49 | 80.2 | 96.24
| .23 | 71.87 | 86.24 | 79.85 | 95.82 | 87.84 |105.4
| .25 | 78.12 | 93.74 | 86.8 |104.16 | 95.48 |114.57
| .26 | 81.25 | 97.50 | 90.27 |108.32 | 99.3 |119.16
| .29 | 90.62 |108.74 |100.69 |120.82 |110.76 |132.91
| .3125 | 97.65 |117.18 |108.5 |130.2 |119.35 |143.22
| .33 |103.12 |123.74 |114.58 |137.49 |126.04 |151.24
| .35 |109.37 |131.24 |121.52 |145.82 |133.67 |160.4
| .375 |117.18 |140.61 |130.2 |156.24 |143.22 |171.86
+---------+-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,000 Tensile |70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .21 | 87.49 |104.98 | 94.79 |113.74 |102.08 |122.49
| .23 | 95.83 |114.99 |103.81 |124.57 |111.8 |133.16
| .25 |104.16 |124.99 |112.84 |135.4 |121.52 |145.82
| .26 |108.33 |129.99 |117.36 |140.83 |126.38 |151.65
| .29 |120.83 |144.99 |130.9 |157.08 |140.97 |169.16
| .3125 |130.21 |156.25 |141.05 |169.26 |151.9 |182.28
| .33 |137.5 |165. |148.95 |178.74 |160.41 |192.49
| .35 |145.83 |174.99 |157.98 |189.57 |170.13 |204.14
| .375 |156.25 |187.50 |169.27 |203.12 |182.29 |218.74
----------+---------+-------+-------+-------+-------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
| +-------+-------+-------+-------+-------+-------
54 Inches.| .21 | 58.33 | 69.99 | 64.81 | 77.77 | 71.29 | 85.54
| .23 | 63.88 | 76.65 | 70.98 | 85.17 | 78.08 | 93.69
| .25 | 69.44 | 83.32 | 77.16 | 92.52 | 84.87 |101.84
| .26 | 72.22 | 86.66 | 80.24 | 96.28 | 88.27 |105.92
| .29 | 80.55 | 96.66 | 89.5 |107.40 | 98.45 |118.14
| .3125 | 86.8 |104.16 | 96.44 |115.72 |106.09 |127.30
| .33 | 91.66 |109.99 |101.84 |122.22 |112.03 |134.43
| .35 | 97.22 |116.66 |108.02 |129.62 |118.82 |142.58
| .375 |104.16 |124.99 |115.74 |138.88 |127.31 |152.77
| +-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,000 Tensile |70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .21 | 77.77 | 93.32 | 84.25 |101.1 | 90.74 |108.88
| .23 | 85.18 |102.21 | 92.28 |110.73 | 99.38 |119.25
| .25 | 92.59 |111.10 |100.3 |120.36 |108.02 |129.62
| .26 | 96.29 |115.54 |104.31 |125.17 |112.44 |134.8
| .29 |107.41 |128.88 |116.35 |139.62 |125.3 |150.36
| .3125 |115.55 |138.66 |125.38 |150.45 |135.03 |162.03
| .33 |122.22 |146.66 |132.4 |158.88 |142.59 |171.10
| .35 |129.69 |155.54 |140.43 |168.51 |151.23 |181.47
| .375 |138.88 |166.65 |150.46 |180.55 |162.03 |194.43
----------+---------+-------+-------+-------+-------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
| +-------+-------+-------+-------+-------+-------
60 Inches.| .21 | 52.5 | 63. | 58.33 | 69.99 | 64.16 | 76.99
| .23 | 57.5 | 69. | 63.88 | 76.65 | 70.27 | 84.32
| .25 | 62.5 | 75. | 69.44 | 83.32 | 76.38 | 91.65
| .26 | 65. | 78. | 72.22 | 86.66 | 79.44 | 95.32
| .29 | 72.5 | 87. | 80.55 | 96.66 | 88.61 |106.33
| .3125 | 78.12 | 93.74 | 86.8 |104.16 | 95.48 |114.57
| .33 | 82.5 | 99. | 91.66 |109.99 |100.83 |120.99
| .35 | 87.5 |105. | 97.22 |116.66 |106.94 |128.32
| .375 | 93.75 |112.5 |104.16 |124.99 |114.58 |137.49
| +-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,000 Tensile |70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .21 | 69.99 | 84. | 75.83 | 90.99 | 81.66 | 97.99
| .23 | 76.66 | 91.99 | 83.05 | 99.66 | 89.44 |107.32
| .25 | 83.83 | 99.99 | 90.27 |108.32 | 97.22 |116.66
| .26 | 86.66 |103.99 | 93.88 |112.65 |101.11 |121.33
| .29 | 96.66 |115.99 |104.72 |125.66 |112.77 |135.32
| .3125 |104.18 |124.99 |112.95 |135.54 |121.52 |145.82
| .33 |109.99 |132. |119.16 |142.99 |128.33 |153.99
| .35 |116.66 |139.99 |126.38 |151.65 |136.11 |163.33
| .375 |125. |150. |135.41 |162.49 |145.88 |174.99
----------+---------+-------+-------+-------+-------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
| +-------+-------+-------+-------+-------+-------
66 Inches.| .1875 | 42.61 | 51.13 | 47.34 | 56.8 | 52.07 | 62.49
| .21 | 42.72 | 57.26 | 53. | 63.63 | 58.33 | 69.99
| .23 | 52.27 | 62.72 | 58. | 69.69 | 63.88 | 76.65
| .25 | 56.81 | 68.17 | 63.13 | 75.75 | 69.44 | 83.32
| .26 | 59.09 | 70.9 | 65.65 | 78.78 | 72.22 | 86.66
| .29 | 65.90 | 79.08 | 73.23 | 87.87 | 80.55 | 96.66
| .3125 | 71. | 85.2 | 78.91 | 94.69 | 86.89 |104.16
| .33 | 75. | 90. | 83.33 | 99.99 | 91.66 |109.99
| .35 | 79.56 | 95.47 | 88.38 |106.05 | 97.22 |116.66
| .375 | 85.22 |102.26 | 94.69 |113.62 |104.16 |124.99
| +-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,000 Tensile |70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .1875 | 56.81 | 68.17 | 61.55 | 73.86 | 66.28 | 79.53
| .21 | 63.63 | 76.35 | 68.93 | 82.71 | 74.24 | 89.08
| .23 | 69.69 | 83.62 | 75.5 | 90.6 | 81.31 | 97.57
| .25 | 75.75 | 90.90 | 82.07 | 98.48 | 88.37 |106.04
| .26 | 78.78 | 94.53 | 85.35 |102.42 | 91.91 |110.29
| .29 | 87.87 |105.44 | 95.2 |114.24 |102.52 |123.02
| .3125 | 84.69 |113.62 |102.58 |123.09 |110.47 |132.56
| .33 | 99.99 |120. |108.33 |129.99 |116.66 |139.99
| .35 |106. |127.27 |114.89 |137.86 |123.73 |148.47
| .375 |113.62 |136.34 |123.1 |147.72 |132.57 |159.08
----------+---------+-------+-------+-------+-------+-------+-------
| |45,000 Tensile |50,000 Tensile |55,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 7,500 | 1-6, 8,333.3 | 1-6, 9,166.6
| +-------+-------+-------+-------+-------+-------
72 Inches.| .1875 | 39.06 | 46.87 | 43.4 | 52.08 | 47.74 | 57.28
| .21 | 43.75 | 52.5 | 48.6 | 58.33 | 53.47 | 64.16
| .23 | 47.91 | 57.49 | 53.24 | 63.88 | 58.56 | 70.27
| .25 | 52.08 | 62.49 | 57.87 | 69.44 | 63.65 | 76.38
| .26 | 54.16 | 64.99 | 60.18 | 72.22 | 66.2 | 79.44
| .29 | 60.41 | 72.49 | 67.12 | 80.55 | 73.84 | 88.60
| .3125 | 65.10 | 78.12 | 72.33 | 86.8 | 79.57 | 95.48
| .33 | 68.75 | 82.5 | 76.38 | 91.62 | 84.02 |100.82
| .35 | 72.91 | 87.49 | 81.01 | 97.21 | 89.11 |106.93
| .375 | 78.12 | 93.74 | 86.8 |104.16 | 95.48 |114.57
| +-------+-------+-------+-------+-------+-------
| |60,000 Tensile |65,000 Tensile |70,000 Tensile
| | Strength. | Strength. | Strength.
| | 1-6, 10,000 | 1-6, 10,833.3 | 1-6, 11,666.6
| +-------+-------+-------+-------+-------+-------
| .1875 | 52.08 | 62.49 | 56.42 | 67.70 | 60.76 | 72.91
| .21 | 53.33 | 69.99 | 63.19 | 75.82 | 68.06 | 81.66
| .23 | 53.88 | 76.65 | 66.21 | 83.05 | 74.58 | 89.43
| .25 | 69.44 | 83.32 | 75.22 | 90.26 | 81.01 | 97.21
| .26 | 72.22 | 86.66 | 78.24 | 93.88 | 84.25 |101.10
| .29 | 80.55 | 96.66 | 87.26 |104.71 | 93.98 |112.77
| .3125 | 86.8 |104.16 | 94.03 |112.88 |101.27 |121.52
| .33 | 91.66 |109.99 | 99.3 |119.16 |106.94 |128.32
| .35 | 97.22 |116.66 |105.32 |126.38 |113.42 |136.1
| .375 |104.16 |124.99 |112.84 |135.43 |121.52 |145.32
----------+---------+-------+-------+-------+-------+-------+-------