Friday, January 16, 2009

FAQ - Buildings: framing

What exactly is a frame?
For full descriptions and illustrations see the sections on Framing, Frame Features, and Frame Specifications.

What is a bay?
The official definition of a bay is "the space between frame center lines or primary supporting members in the longitudinal direction of the building." In simpler terms, every time you connect two frames together, you make another bay. For a fuller description and illustrations, see the introductory section on Framing.

Are the bolted structural connections predrilled or punched, or am I going to have to burn holes and bolt or weld all the clips on?
All our structural members are pre-punched, and all our connecting clips are already welded in place according to our engineering specifications. This is not the case with many buildings sold. Most come with loose clips which must all be bolted on to the members, requiring a great deal of extra labor and time.

Having said all that, we should still point out that erectors frequently have to burn a new hole or two when putting up a building. Among the tools we recommend that an erector have is a cutting torch. We also urge that you call us before making even minor modifications to your building. Never make any modifications to your building without consulting Steelbuilding.com's technical support personnel. Our buildings are precisely engineered to meet specific code and load requirements, and modifications may alter their structural characteristics. Steelbuilding.com will not knowingly aid, agree to, or participate in any way in the construction of a structure that does not meet all applicable code requirements.

What is the spacing on purlins and girts?
Generally, the first girt is at 7'4" and girts above that are usually at 5 feet (depending on design specifications). Depending on wind loading, there may also be a girt below 7'4". Purlins are typically spaced five feet apart, but with high roof loads this interval will narrow accordingly.

On the sidewalls are the girts flush or outside the post?
Our system specifies bypass sidewall girts (outside the post)and flush endwall girts (inside the post). You may request a special quote for other configurations.

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