and saddle ties. However, as a professional, you
should be familiar with all six types.
SNAP, OR SIMPLE, TIE. The snap, or simple,
tie (view A of figure 7-20) is simply wrapped once
around the two crossing bars in a diagonal manner
with the two ends on top. The ends are then twisted
together with a pair of side cutters until they are very
tight against the bars. Finally, the loose ends are cut
off. This tie is used mostly on floor slabs.
WALL TIE. The wall tie (view B of figure
7-20) is made by taking one and one-half turns around
the vertical bar, then one turn diagonally around the
intersection. The two ends are twisted together until
the connection is tight, then the excess is cut off. The
wall tie is used on light vertical mats of steel.
DOUBLE-STRAND SINGLE TIE. The
double-strand tie (view C) is a variation of the simple
tie. It is favored in some localities and is especially
used for heavy work.
SADDLE TIE. The wires of the saddle tie
(view D) pass half way around one of the bars on
either side of the crossing bar and are brought
squarely or diagonally around the crossing bar. The
ends are then twisted together and cut off.
SADDLE TIE WITH TWIST. The saddle tie
with twist (view E) is a variation of the saddle tie.
The tie wire is carried completely around one of the
bars, then squarely across and halfway around the
other, either side of the crossing bars, and finally
brought together and twisted either squarely or
diagonally across. The saddle tie with twist is used
for heavy mats that are to be lifted by crane.
CROSS, OR FIGURE-EIGHT, TIE. The
cross, or figure-eight, tie (view F) has the advantage
of causing little or no twist in the bars.
CARRYING WIRE. When tying reinforcing
bars, you must have a supply of tie wire available.
There are several ways you can carry your tie wire.
One way is to coil it to a diameter of 18 inches, then
slip it around your neck and under one arm
(figure 7-21). This leaves a free end for tying. Coil
enough wire so it weighs about 9 pounds.
Another way to carry tie wire is to take pieces of
wire about 9-inches long, fold them, and hook one end
in your belt. Then, you can pull the wires out as
needed. The tools you use in tying reinforcing bars
include a 6-foot folding rule, side cutters, leather
gloves, 50-foot tape measure, and a keel crayon,
either yellow, red, or blue.
Figure 7-21.-Carrying tie wire.