mr_delicious wrote:Also, would a 3v 5/8 dome made out of 3/4" thinwall be strong enough to support the weight of four people on a platform (as long as the strut lengths don’t exceed 5 ft)?
How big is your dome going to be? (No java here, so I can't plug the 5' figure into Tara's calculator!)
If you're suspending the platform from the upper vertices around the top of the dome, you'll be able to support PLENTY of weight providing you design the platform carefully. My first experiment with domedecks involved a heavy wooden platform hung from the five points and "North Pole" of an 18' dia. 2V- Easily held six people. Nowadays I sit the deck ON TOP of the dome, using a coupler that stands up from the top pentagon at its vertices. Rock solid. In fact,the two upper domes of the Snowman, the wooden deck AND the playa luge slide all rested on those six points. No problemo.
If it's a suspended deck for starters, I suggest that you measure and build a platform that's the correct size to insure that the force on the eyebolts is straightline- In other words, that you're not bending the eyebolts. (They stand a chance of shearing if you load them to the sides.)