Parallel Flange Channels

Parallel flange channel is normally called a channel or a “C-section”. They are described by their depth, width and weight per metre in kilograms, eg. 150 x 75 x 18 PFC. The PFC is used for columns, lintels above doors or simply a beam supporting floor joists. When used for lintels, they have a bottom plate welded to it that takes the outer bricks or 2 channels are bolted back to back with 100 mm spacers to support both leafs of a cavity wall.

Section
Designation
Mass per metre
M kg/m
Depth of section
h mm
Width of section
b mm
Thickness of Web
s mm
Thickness of Flange
t mm
Radius of root
r mm
Depth between fillets
d mm
Shear centre Position
from web eo cm
Shear centre Position
from cg sc cm

Second Moment of
area Axis x-x cm4
Second Moment of
area Axis y-y cm4
Radius of Gyration
Axis x-x cm
Radius of Gyration
Axis y-y cm
Elastic Modulus
Axis x-x cm3
Elastic Modulus
Axis y-y cm3
Elastic Neutral
Axis Cy cm

Plastic Modulus
Axis x-x cm3
Plastic Modulus
Axis y-y cm3
Plastic Neutral
Axis Ceqcm
Buckling Parameter u Torsional Index x Warping Constant
H dm6
Torsional Constant
Inertia J cm4
Area of section
A cm2
Section
Designation
Mass per metre
M kg/m
Depth of section
h mm
Width of section
b mm
Thickness of Web
s mm
Thickness of Flange
t mm
Radius of root
r mm
Depth between fillets
d mm
Shear centre Position
from web eo cm
Shear centre Position
from cg sc cm

Second Moment of
area Axis x-x cm4
Second Moment of
area Axis y-y cm4
Radius of Gyration
Axis x-x cm
Radius of Gyration
Axis y-y cm
Elastic Modulus
Axis x-x cm3
Elastic Modulus
Axis y-y cm3
Elastic Neutral
Axis Cy cm

Plastic Modulus
Axis x-x cm3
Plastic Modulus
Axis y-y cm3
Plastic Neutral
Axis Ceqcm
Buckling Parameter u Torsional Index x Warping Constant
H dm6
Torsional Constant
Inertia J cm4
Area of section
A cm2
430x100x64 64.43728099 430 100 11 19 15 362 3.27 5.34 21939 722 16.3 2.97 1020 97.9 2.62 1222 176 0.954 0.917 22.5 0.219 63 82.1
380x100x54 53.96145599 380 100 9.5 17.5 15 315 3.48 5.79 15034 643 14.8 3.06 791 89.2 2.79 933 161 0.904 0.932 21.2 0.15 45.7 68.7
300x100x46 45.52663099 300 100 9 16.5 15 237 3.68 6.29 8229 568 11.9 3.13 549 81.7 3.05 641 148 1.31 0.944 17 0.0813 36.8 58
300x90x41 41.39152183 300 90 9 15.5 12 245 3.18 5.33 7218 404 11.7 2.77 481 63.1 2.6 568 114 0.879 0.934 18.4 0.0581 28.8 52.7
260x90x35 34.83677183 260 90 8 14 12 208 3.32 5.66 4728 353 10.3 2.82 364 56.3 2.74 425 102 1.14 0.942 17.2 0.0379 20.6 44.4
260x75x28 27.58337183 260 75 7 12 12 212 2.62 4.37 3619 185 10.1 2.3 278 34.4 2.1 328 62 0.676 0.932 20.5 0.0203 11.7 35.1
230x90x32 32.15992183 230 90 7.5 14 12 178 3.46 6.01 3518 334 9.27 2.86 306 55 2.92 355 99.1 1.69 0.95 15.1 0.0279 19.3 41
230x75x26 25.66404683 230 75 6.5 12.5 12 181 2.78 4.75 2748 181 9.17 2.35 239 34.8 2.3 278 63.1 1.03 0.947 17.3 0.0153 11.8 32.7
200x90x30 29.71857183 200 90 7 14 12 148 3.6 6.37 2523 314 8.16 2.88 252 53.4 3.12 291 94.5 2.24 0.954 12.9 0.0197 18.3 37.9
200x75x23 23.44642183 200 75 6 12.5 12 151 2.91 5.09 1963 170 8.11 2.39 196 33.8 2.48 227 60.8 1.53 0.956 14.8 0.0107 11.1 29.9
180x90x26 26.05654683 180 90 6.5 12.5 12 131 3.64 6.48 1817 277 7.4 2.89 202 47.4 3.17 232 83.5 2.36 0.949 12.8 0.0141 13.3 33.2
180x75x20 20.33782183 180 75 6 10.5 12 135 2.87 4.98 1370 146 7.27 2.38 152 28.8 2.41 176 51.9 1.34 0.946 15.3 0.00754 7.34 25.9
150x90x24 23.87032183 150 90 6.5 12 12 102 3.71 6.69 1162 253 6.18 2.89 155 44.4 3.3 179 76.9 2.66 0.936 10.8 0.0089 11.8 30.4
150x75x18 17.87292183 150 75 5.5 10 12 106 2.98 5.29 861 131 6.15 2.4 115 26.6 2.58 132 47.2 1.81 0.946 13.1 0.00467 6.1 22.8
125x65x15 14.75647183 125 65 5.5 9.5 12 82 2.56 4.53 483 80 5.07 2.06 77.3 18.8 2.25 89.9 33.4 1.55 0.942 11.1 0.00194 4.72 18.8
100x50x10 10.20315916 100 50 5 8.5 9 65 1.94 3.42 208 32.3 4 1.58 41.5 9.89 1.73 48.9 17.6 1.18 0.942 10 0.000491 2.53 13
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