Help The best ligature knot to tie here? (pic)

[singularity3]

I would use the two wooden pillars for support.

thank you

 

[アホペンギン]

Are those railings for stairs? Stair railings aren't supposed to be able to withstand so much pressure, I don't think that'd work.

 

[singularity3]

Are those railings for stairs? Stair railings aren't supposed to be able to withstand so much pressure, I don't think that'd work.

They hold the weight perfectly. my doubt is the knot

 

[アホペンギン]

They hold the weight perfectly. my doubt is the knot

The anchor point must be able to hold approximately 3x your weight. Have you tested that?

Also, I'm not sure about this but you could try putting a snuggle hitch knot on each beam, if your rope is long enough. Maybe that'd make it secure, I'm not very knowledgeable concerning these topics so you'd also need extra advice from someone else in addition to mine.