5/8 .30680 4602 1.03 1-3/8 3/4 10
3/4 .44179 6630 1.49 1-1/2 7/8 10
7/8 .60132 9019 2.03 1-3/4 1 9
1 .78540 11775 2.65 2 1 8
1-1/8 .99402 14910 3.36 2 1-1/8 7
1-1/4 1.2272 18405 4.17 2-1/4 1-1/4 7
1-3/8 1.4849 22260 5.02 2-1/2 1-3/8 6
1-1/2 1.7671 25505 5.97 2-3/4 1-1/2 6
1-5/8 2.0739 31095 7.01 2-7/8 1-5/8 5
1-3/4 2.4053 36075 8.13 3 1-3/4 5
1-7/8 2.7612 41415 9.33 3-1/4 1-7/8 4-1/2
2 3.1416 47130 10.62 3-1/2 2 4-1/2
2-1/8 3.5166 53190 12.00 3-3/4 2-1/8 4
2-1/4 3.9761 59640 13.40 4 2-1/4 4
2-3/8 4.4301 66450 15.00 4-1/8 2-3/8 4
2-1/2 4.9087 73620 16.70 4-1/4 2-1/2 3-1/2
2-5/8 5.4119 81178 18.20 4-1/2 2-5/8 3-1/2
2-3/4 5.9396 89094 20.00 4-3/4 2-3/4 3-1/2
2-7/8 6.4918 97377 21.90 5 2-7/8 3
3 7.0686 106029 23.80 5-1/4 3 3
3-1/4 8.2958 124437 27.90 5-3/4 3-1/4 3
3-1/2 9.6211 144316 32.40 6 3-1/2 2-1/2


TABLE OF SAFE WORKING LOAD IN LBS., FOR HOLLOW CAST-IRON COLUMNS.

[_G.L. Vose._]

Outside Length or height in Feet Metal
Diameter Thickness