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Circular Hollow Round Sections Cold Formed per BS EN 10365 Calculator
Outside diameter d x Wall Thickness t =
33.7 x 3.0
42.4 x 3.0
48.3 x 3.0
48.3 x 4.0
60.3 x 3.0
60.3 x 4.0
76.1 x 3.0
76.1 x 4.0
88.9 x 3.0
88.9 x 3.5
88.9 x 4.0
88.9 x 5.0
88.9 x 6.3
114.3 x 3.0
114.3 x 3.5
114.3 x 4.0
114.3 x 5.0
114.3 x 6.0
114.3 x 6.3
139.7 x 3.0
139.7 x 4.0
139.7 x 5.0
139.7 x 6.0
139.7 x 6.3
139.7 x 8.0
139.7 x 10.0
168.3 x 4.0
168.3 x 4.5
168.3 x 5.0
168.3 x 6.0
168.3 x 6.3
168.3 x 8.0
168.3 x 10.0
168.3 x 12.5
193.7 x 4.0
193.7 x 4.5
193.7 x 5.0
193.7 x 6.0
193.7 x 6.3
193.7 x 8.0
193.7 x 10.0
193.7 x 12.5
219.1 x 4.5
219.1 x 5.0
219.1 x 6.0
219.1 x 6.3
219.1 x 8.0
219.1 x 10.0
219.1 x 12.0
219.1 x 12.5
219.1 x 16.0
244.5 x 5.0
244.5 x 6.0
244.5 x 6.3
244.5 x 8.0
244.5 x 10.0
244.5 x 12.0
244.5 x 12.5
244.5 x 16.0
273.0 x 4.0
273.0 x 4.5
273.0 x 5.0
273.0 x 6.0
273.0 x 6.3
273.0 x 8.0
273.0 x 10.0
273.0 x 12.0
273.0 x 12.5
273.0 x 16.0
323.9 x 5.0
323.9 x 6.0
323.9 x 6.3
323.9 x 8.0
323.9 x 10.0
323.9 x 12.0
323.9 x 12.5
323.9 x 16.0
355.6 x 5.0
355.6 x 6.0
355.6 x 6.3
355.6 x 8.0
355.6 x 10.0
355.6 x 12.0
355.6 x 12.5
355.6 x 16.0
406.4 x 6.0
406.4 x 6.3
406.4 x 8.0
406.4 x 10.0
406.4 x 12.0
406.4 x 12.5
406.4 x 16.0
457.0 x 6.0
457.0 x 6.3
457.0 x 8.0
457.0 x 10.0
457.0 x 12.0
457.0 x 12.5
457.0 x 16.0
508.0 x 6.0
508.0 x 6.3
508.0 x 8.0
508.0 x 10.0
508.0 x 12.0
508.0 x 12.5
508.0 x 16.0
mm x mm
Mass
pre metre =
kg/m
Area of section =
cm
2
Ratio for local buckling d/t =
-
Second moment of area I =
cm
4
Radius of gyration i =
cm
Elastic modulus W
ei
=
cm
3
Plastic modulus W
pl
=
cm
3
Torsional constant I
T
=
cm
4
Torsional constant W
t
=
cm
3
Surface area per metre =
m
2
Surface area per tonne =
m
2
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