C Channel Steel Prices

Picture of C Channel Steel Prices

Steel c channel or structural steel channel varies in sizes from 3 to 15 inches deep, see figure 34 below. These structural steel channel sizes shown are very similar to how wide flange table works but are different from steel angle tables. Angle iron is used for light framing such as roof and floor openings. Larger angles of legs 5 inches or more are used for lateral braces as in braced frames or horizontal braces for floors.

For loads that are too heavy for steel angles, but too small for wide flange beams, steel channels are normally used. The section properties in the table below are used by both architects and engineers to design steel channel sizes necessary to carry the design loads. To demonstrate how the design tables are used, lets verify the C8x11.5 used in the patio cover shown figure 26 below. In this design, the design load was estimated to be 15 psf dead load and 20 psf live load.

First: check the C8x11.5 at mid span of roof deck. This C8x11.5 is 14 ft long. From moment equation M = wL^2/8. The tributary width is 8 ft (4ft from either side of the C8) so w = 35 psf x 8 ft = 280 plf. Substituting w to the M equation yield M = 280*8^2/8 = 2,240 lb-ft. The modulus equation S = M/.66Fy = [2240*12/1000]/.66*36 = 1.13 in^3 which is much smaller than the S = 8.14 for C8x11.5, see figure 34.

Second: check the C8 at the column. In this case the span is 16 feet, the tributary width is 14 feet (7 feet from either side of the column). w = 35 psf x 14 ft = 490 plf, M = 490*16^2/8 = 15,680. S = [15680*12/1000]/.66*36 = 7.92 in^3 which is less than 8.14^3, the design is ok.

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There are two types of Steel channel sizes, one with designation MC and the other C as in steel steel c channel. The MC stands for miscellaneous channels range in sizes from 3 to 18 inches deep see figure 36 below. One of the most common usage of steel channel is on stair manufacture as stair stringers Similar to angle iron usage, the structural steel channel is mainly for light framing, though they can be used as main structural member such as beam or girder.

Framing for floor penetrations are either done with steel channel or steel angle. This is mainly because they are less expansive and easy to handle. Another common application of steel channels is for supports of hanging loads such as mechanical units or fans hanging from roofing or floor framing. If the span is 3 to 5 feet long, angle iron will work. For longer spans from 6 to 14 feet long +/-, steel channel will work best.

But it all depends on the load. If the load is too heavy even at 3 ft span, steel channel may be the best option. Sometimes for heavier load it may be required to double up the steel channels or use wide flange with higher yield strength to be able to support the load. Structural steel channels are also commonly used for light structure such as steel patio cover framing for carports commonly found at apartment complexes and/or light commercial structures.

They can also be used at single homes like figure 26 Similar to wide flanges or I beam designation, a MC18x58 is 18 inches deep and weighs 58 pounds per foot. Per figure 36 the W column is for weight in pounds per foot of the member. A is for cross sectional area of steel in square inches. The d column is for depth of the member in inches, bf stands for the width of the base in inches, tf and tw are the thicknesses of the flange and web respectively.

Sometimes if the load are too much for a single channel to carry, putting two channels back to back double it's capacity. The same way double angles are used. Like angle iron, steel C channels, MC channels are A36 steel. To view MC channels sizes in pdf format: click here or for c channel sizes Back to the top From steel channel sizes to all-concrete-cement.com

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