With the Double Floor Lashing, the floor spars (floor slats, decking poles) are attached (looped) in two places, on either side to each platform support (stringer pole, rafter). This means, when pulled tight, this lashing makes the platform floor, raft, deck, or walkway, more secure.
- The lashing starts with a simple clove hitch around a platform support on the inside of the first floor spar. Secure the short end of the rope by wrapping it round the running end forming a twisting pattern in the same direction as the rope’s weave.
- Make a bight in the running end and pass it over the first floor spar on the inside of the platform support.
- Grab this bight and pass it underneath the platform support.
- Now loop it over the first floor spar on the outside of the platform support.
- Tighten both loops around the first floor spar by pulling the running end extending between the first and second floor spars on top of the platform floor.
- Repeat this process for each floor spar until you reach the other end.
- Secure the running end of the rope to the other end of the platform support with tight half hitches.
NOTE: Throughout the whole Double Floor Lashing process, except when pulling the running end to tighten the loops around each floor spar (or securing the end of the rope to the platform support), you’re always working with a bight in the rope.
The whole process can be done simultaneously on the other platform support, or completed one support at a time.
Depending on the size of the platform, a good length of lashing rope is needed for this floor lashing—a 50-foot length for a platform six feet long, 35 feet for a 4-foot platform. Shorter lengths can always be tied together if you run out of running rope during the process. When building a platform that will be walked over or stood upon, 1/4-inch lashing rope does the job. If you’re lashing a platform for a Chippewa Kitchen, binder twine works fine.