[jwright650]

Here is a neat project I worked on at my previous employer. We fabricated this and assembled it before sending it off to the jobsite. It was built out of rolled W8x10's for the spines, and the bottom ring was made from rolled TS8x4x1/2 tubing, the top compression ring couldn't be rolled to that tight of a radius, so we cut out two rings out of 1/2" flat plate and then rolled two pieces of plate to the inside and outside of the two rings....welded them together to along the edges to form a tube shape. Radiused the welds with a grinder to mimic the tubing that was originally specified.

[jwright650]

video of it flying up onto the building
http://youtu.be/UyCG0rf7qcg

[WerkSpace]

Thanks for sharing, John. I have a similar project on the go but I might try something different.

Last summer, I bought the frame from a retired 40' X 60' fabric covered quonset building.
Each of the 13 loops/arches has three parts. (Two long and one short. 2" dia. square tube.)

Some of this material will be used to cover a 20' span between two 40' shipping containers. As a garage.
Similar to this design but a shallow roof. http://pavilionstructures.com/building- ... p-in-a-box

The remaining material is destined to become a 40' diameter portable dome tent for camping and events.
The problem that I was facing, was how to safely erect or dismantle this large tent without ladders or cranes.
I found a photo of such a design, and I think that I will adopt this idea, for my project.

[jwright650]

I have a similar project

That sounds neat!

[weldin mike 27]

Did they ever bother to concrete the floor for you? That looks abit 3rd world.

[jwright650]

Did they ever bother to concrete the floor for you? That looks abit 3rd world.

Is this question for me? If so, that pic was taken in the material receiving department, it was the only place that I could lay it all out and put it together without disrupting the entire shop(due to the over head cranes). The concrete piers with gravel floor are to hold the beams up off the floor and still are able to throw chains underneath and wrap the stacks of steel to move them down into the main shop for further processing(sawing, punching, cambering, fabrication, etc....

[weldin mike 27]

Right. The flooring set up is exactly what it needs to be. Got ya.

[jwright650]

Right. The flooring set up is exactly what it needs to be. Got ya.

Yup, the painting/shipping/loading department is setup the same way on the opposite end of the plant. The main fabrication plant has solid floors with steel saw horses for work tables.