the steel oasis by steel | |
| 14 foot diameter hole to hole | total cut These calculations are for 1-inch EMT with an outer diameter of 1.16 inches. flatten 3.5 inches on each end to ensure the flat tab transitions cleanly into the round pipe. add 7 inches to the hole to hole lengths. This will use up the 120 inches of the 10 foot tube. Strut A, 30 pieces, the shortest, wrapped in duct tape 29.63 inches | 36.63 inches Strut B, 55 pieces, the medium size painted tan 34.30 inches | 41.30 inches Strut C, 80 pieces, the longest, the original metal 35.05 inches | 42.05 inches 36.63 + 41.30 + 42.05 = 119.98 | |
| materials 46 Bolts: 3/8" diameter, 2.5" length (Grade 5 hex head). 46 Nuts: 3/8" Nyloc locking nuts. 92 Washers: 3/8" x 1.5" wide heavy-duty fender washers 10 foot pipe: 30 cut A B C 25 cut B C 13 cut C C 68 total | |
| cut crush and drill cut the EMT to the calculated total cut length. A sawzall with a fresh blade cuts fastest Crush the last 3.5 inches of each tube end flat. Maybe use a hydraulic press. Ensure both flat ends on a single pipe lie in the exact same plane (not twisted). Drill the Center Holes: Mark your Hole-to-Hole dimension precisely. Drill a 7/16 center hole on each flat face. | |
| add the direct bend Since 12° is a relatively small angle, it can be hard to eyeball. Clamp the round body of your pipe flat onto a workbench with the flat tab extending over the edge. Bend the tab downward until the very tip of the tab sits exactly ¼ inch lower than the level of the workbench surface. Alternatively, put the flat end into a vise and bend it slightly inward to an angle of roughly 10- 12 degrees. This creates the natural curvature of the dome so the struts line up evenly | |
| stack the nodes the Inside-Out Stack Method: Push the bolt through a fender washer. Push the bolt from the inside of the dome facing out. Slide on the horizontal base struts first. Slide on the vertical rising struts next. Add a top fender washer and a nyloc locking nut. | |
| the stabilization ring link the 4x4s together using steel structural strapping or corner brackets on the inside edges. | |
| materials for the stabilization ring 10 lengths of pressurized 4x4s 42.05' long, 5 lengths 41.3 long for the base ring 10 C's and 5 B's for each of the 5 side panels, 6 C's and 3 B's | |