My husband just built our kids a large swing set in the back yard. We have 5 little kids (8 years to newborn). We have lots of kids over to play as well.
The original plans called for a 12’ beam and 3 swings, but we wanted to fit 4. However, my husband sprung for 16’ at the store and planned to install 5 swings.
After seeing the 16’ beam, I expressed concern over its ability to handle 5 big kids. We landed on a solution to cantilever 3’ at one end to shorten the span, but keep the 16’ length.
Well, that wasn’t how it was executed. It is a 16’ span with 5 swings. The set is very stable (just sitting on the ground) but the beam flexes quite a bit.
So my question is: what is the load capacity for a 4x6x16 beam in this situation? We were thinking we’d at least add a 2x4x16 across the top. I’d like it to be safe enough for 5 150 lb kids swinging at once. Is this realistic? I just want to be sure it is safe.