Knowing your steel gauge is very important when shopping for a new building. Cheap “economy” Steel buildings use 29 gauge and is the thinner steel. The premium quality 26 gauge steel is favored by most companies. Maintenance problems will likely occur with the use of 29 gauge steel that will result in high repair costs.

PRIMARY FRAMING(Consisting of columns for sidewalls and rafters for roof)

Solid Red Iron I-Beam construction bused for maximum strength. Material utilized is minimum 50,000 p.s.i. yield strength. (In order to save costs, some manufacturers use 36,000 p.s.i. yield strength which is not as strong.)

By utilizing a higher yield strength material Capital Steel can provide a smaller web is employed to help create a space saving design.

All frames are single bead; continuous arc welded by automatic welding machines (this helps insure quality control). A factory primer coat is applied to help protect these components during the building’s erection process.

End Wall Frames and Columns are either cold formed, mill-rolled, or built-up "I” sections, depending on the design requirements.

SECONDARY FRAMING

Consists of Girts (in sidewall) and Purlins (in roof) and are 8” or 10” to meet design requirements. Cold rolled Z-section, 13 to 16 gauge ASTM A-570, 55,000 p.s.i. yield material, is used to maximize strength. Bypass girt system overlaps at sidewall columns forming a continuous "beam” for extra strength.

Purlins are top-mounted on the rafter with a varied lap of 2 feet to six feet for strength and to save costs in construction overhead. Maximum purlin spacing is 5 feet on center.

Eave Strut is cold-formed C-Section that is rolled for the appropriate roof pitch, to help insure weather tightness at the eave.

Sheeting angle is a continuous angle, supplied for the attachment of the sheeting at the rake of the building for ease of installation.

Base angle is a continuous angle, supplied for the attachment of the base of the sheeting to the concrete. It is attached to the concrete with ram-jets or equivalent anchors by others.

Bracing diagonal rod or cable bracing may be supplied for roof and walls to remove longitudinal load from the structure.

Angle Flange Bracing is provided for the connection of the rigid frame to the purlins and girts. This ensures that allowable compression levels are adequate for any combination of loadings. Purlin bridging angles may be provided at each mid-bay to assure consistent purlin spacing and stiffening.

For more information on Steel Building design please call Capital Steel Industries at 1-800-246-9640.

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