Steel building interior bracing questions

[eaneumann]

I just bought a new property and finally have a shop. It’s about 25x35 feet. I want to add an 8x20 foot room for storage and my air compressor. The back half of the shop has cable bracing in the ceiling. The side of the building has cabling bracing in the back half on only one side, the side I want to add on to, but it’s loose and not doing anything. Should this be on both sides? Is it just temporary? Also can I move the horizontal beam up a few feet to clear a door? The horizontal beam doesn’t appear to do much other than provide a place to attach siding, it’s very thin. Should I weld in a horizontal beam and call it good? The structure is bolted to the foundation and seems solid.






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[sberry]

It is not temp. It is used to square during construction and as wind/rack bracing. It doesn't need to be tight, just snug is ok, it really doesn't stretch.

 

[readhead]

The cable braces are important and should be tight. You can frame an opening to install a door with the proper components. Normally there is usually a girt at 7’-4”. Are there no man doors in the building?

 

[sberry]

Walk door or car door? You really don't need to move it but cut it and install door frame and header.

 

[eaneumann]

There is a man door and a garage door at the front on the building. I would like there to be a roll up door or double door to access the add on from inside the shop that way I can roll large equipment in there while not in use easily from the shop. Reason for keeping it enclosed is for noise of the air compressor. The horizontal beam is about 5 feet high. Should there be cables on the other side of the shop also? Looks like there was at one point. The cables are very loose, not even finger tight. If I put a door where the cables are, can I move them or add additional cables on each side of the door?

Thanks everyone!


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[brownbagg]

i screwed 2x4 unto the purlins and then attach plywood to those, for the roof I just screwed plywood to the purlins

 

[matt_i]

Typical for a multi-bay building is that one bay has to have the X-bracing. That's the one without garage doors.

In my opinion the X-bracing doesnt do that much until there's a storm blowing thru with the dark brown/red on the radar which is stabbing broken tree branches into the ground. Then it better be present and tight.