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Frame Design

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In this section you will find several different options for frames. It may be to your advantage to have one of our sales representatives walk you through this section to help you understand and select the frames that best suit your needs.

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Pitch ( D )

Above you will see a diagram showing you the standard elevations for a 1:12 to 4:12 pitch building. Pitch refers to the angle of the roof and its rise to the center. 1:12 pitch means 1 inch up for every 12 inches towards the center of the building. For example: On a 50 foot wide 100 foot long building with a 1:12 pitch, the building would have 25 inches of rise. The equation to figure pitch is the width of the building divided by 2, times the pitch. Anything above 4:12 pitch makes the building a custom project.

Framed Openings

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Above you will see an illustration of a framed opening for a window. Most doors and windows made for steel buildings can be installed without a framed opening. However, without the structural support of a framed opening, the door or window may move, leak, have severe wind draft,and becomes much easier to break into.

X – Bracing

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Above you will see an illustration of X-Bracing. X-Bracing helps provide structural support to a steel building. Typically steel buildings require 1 bay on each sidewall and 1 bay on each end wall to be X-Braced. If all bays are being utilized for doors, windows, etc., other ways of bracing may be used. See portal frame (below) and main frame end walls (above)(J).

Standard Base Angle and Trim Options

 

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Standard Base Angle

The Standard Base Angle option requires a notched concrete slab, and is included as a standard option in the base building price. Click Here for more options.

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Portal Frame

A small, straight, rigid frame which spans across the bay width at the sidewall. Portal Frames are used in place of Diaphragm Action, Rod Bracing or Cables to resist longitudinal loads where these other bracing methods are not permitted. The portal frame will reduce available clearance for wall accessories located in the braced bay. Maximum framed opening height is 2’-2” below the building eave.

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CLEAR SPAN

Tapered columns and rafters give optimum clear span capabilities while keeping unused interior clearances at minimum.

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MULTI SPAN

Offers the most economical cost per square foot for buildings over 80’ wide. Ideal design when interior columns are not objectionable.

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CLASSIC

Straight columns and rafters. This design is common on smaller width buildings. Easy to finish the interiors.

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SINGLE SLOPE

Single slope, tapered columns. Especially suited for commercial stores. Offered with interior columns as well.

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LEAN-TO

Used to add space at sides or ends. It differs from the single slope in that it must be supported on the high side by an adjoining building column.

 

 

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