MC13×40 MC channel

Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.

MC13×40 measures 13 in. deep with a 4 1/8 in. flange and a 9/16 in. web.

At 40 lb per foot it is one of the 4 MC13 sizes, which run from 31.8 to 50 lb/ft.

For strong-axis bending its section modulus is Sx = 41.9 in³ and its moment of inertia Ix = 273 in⁴, with a plastic modulus Zx = 51.2 in³.

Detailing dimensions

Depth (d)13"
Flange width (bf)4 1/8"
Web thickness (tw)9/16"
Avg flange thickness (tf)5/8"
k (detailing)1 7/16"

Section properties

Weight40 lb/ft
Area (A)11.7 in²
Ix273 in⁴
Sx41.9 in³
Zx51.2 in³
rx4.82 in
Iy13.7 in⁴
Sy4.24 in³
Zy8.66 in³
ry1.08 in
J1.55 in⁴

Other MC13 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

MC13×31.8MC13×35MC13×50

Similar weight MC channels

Comparable 40 lb/ft sections in other MC channel sizes.

MC12×4040 lb/ft · Sx 39 in³MC10×41.141.1 lb/ft · Sx 31.5 in³MC18×42.742.7 lb/ft · Sx 61.5 in³MC12×3535 lb/ft · Sx 36 in³MC12×4545 lb/ft · Sx 41.9 in³MC18×45.845.8 lb/ft · Sx 64.2 in³MC10×33.633.6 lb/ft · Sx 27.8 in³MC12×3131 lb/ft · Sx 33.7 in³

Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need MC13×40 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: MC channels · Steel Beam Size Chart

Interactive drawing