Found this video doing research for the TL rope work badge. Clicked on the channel, and whaddya know, series of videos for the TL badge. Appreciate it! Walk Worthy!
Yes, that can happen depending on material used and tightness of wraps. If you are having difficulty with the wraps not getting tight enough to hold the poles tightly to the stringers, then you can try frapping horizontally under the treads and above the stringer.
The Floor Lashing can be used to create any flat surface like a wall, or ceiling. If you were to build a house you would be using mainly square and diagonal lashings to frame the house and then floor lashings to cover the frame.
Sure! This would be the best way to use lashings for a seating area in a tree. Just make sure to tie it tight as shown in the video so the treads cant come loose.
You edited out how to do the first tread right? There's way stronger ways of lashing floor, I wouldn't recommend this one, just look up bushcraft shelter structure knot.