Page 234 - Mario Bigon "The Morrow Guide to Knots"

LADDER

Begin by forming a figure-
eight knot (see pp. 31-35) in
the bight of the rope: then
separate the ends and lay
them parallel to determine the
width of the rungs. With the
left end make a double bight
around the right end (1 ).
Using the right end, make a
series of turns around the
bight, tightening each one
immediately (3,4,5). Finish
the rung by passing the end
through the loop at the end of
the bight (6, 7). Note that this
rung is simply a running knot
secured on both sides, so,
before passing on to the next
rung, make sure that the turns
are well tightened (8). This
will balance the rung and
avoid subsequent sagging.
Once the rung is tight, you
can continue using the same
procedure. working from the
right alternately, to make the
required number of rungs (9).