Welded Wire Reinforcement

Drawing	Wire Dimensions
	Long Wire Spacing		in
	Cross Wire Spacing		in
Long Wire Size	W	D
Cross Wire Size	W	D
SHEET DIMENSIONS
Width (Long Wire to Long Wire)		in
Left Side O-Hang +		in
Right Side O-Hang +		in
Overall Width		ft-in
Length (Cross Wire to Cross Wire)		in
Top O-Hang +		in
Bottom O-Hang +		in
Overall Length		ft-in
Square Feet Per Sheet		ft²
SHEET WEIGHT
Number of Long Wires		Ea.
Number of Cross Wires		Ea.
Sheet Weight		lbs

Minimum long wire spacing is 2 inches.
Typical wire spacing is in even increments
(2, 4, 6, 8...), but odd wire spacing can be produce.

Minimum cross wire spacing is 2 inches.
Typical wire spacing is in even increments"
(2, 4, 6, 8...), but odd wire spacing can be produce.

Wire sizes are entered in hundred square inches
(#3 bar = 0.11 square inches and would be entered
as 11.0 hundred square inches). Wire Sizes are not
limited to standard sizes like conventional rebar.
Wire sizes range from 1.4 to 45 hundred square
inches and can be produced in increments as small
as a hundredth of a square inch. Wire sizes need to
be at least 40% of the cross wire size to guarantee
an adequate weld.

The sheet width is measured from the outermost
long wire to outermost long wire, or the overall
width of the sheet minus any side overhangs.
Sheets widths are typically designed to about 8 feet
for ease of shipment. Ivy Steel & Wire can produce
sheets up to 17 feet wide. Designers need to
understand the relationship between long wire
spacing and sheet width. The sheet width is the sum
of all the long wire spacings and therefore needs to
be evenly divisible by the long wire spacing.

Side overhangs range from a flush cut to whatever
the designer wants. The designer should consider
the transportability of the sheet when designing
long side overhangs. Typically long overhangs are
designed into sheets to accommodated finger laps.

Sheet lengths can be produced in any length up to
45 feet, and is measured from the outermost cross
wire to outermost cross wire, or the overall length
of the sheet minus any end overhangs. Designers
need to understand the relationship between cross
wire spacing and sheet length. The sheet length is
the sum of all the cross wire spacings and therefore
needs to be evenly divisible by the cross wire spacing.
For example a sheet measuring 9 feet in length is
evenly divisible by a 6 inch cross wire spacing but
not by an 8 inch spacing. The designer would either
adjust the end overhangs or the sheet length to
compensate for the 8 inch spacing.

End overhangs range from a flush cut to whatever
the designer wants. The designer should consider
the transportability of the sheet when designing
long end overhangs. Typically long overhangs are
designed into sheets to accommodated finger laps.

Coating factor -
Epoxy-coated bars or wires with cover less than 3db,
or clear spacing less than 6db is 1.5,
all other epoxy-coated bars or wire is 1.2,
uncoated reinforcement is 1.0.

Concrete cover factor (in) –
Use the smaller of either the distance from the
center of the bar or wire to the nearest concrete
surface or one-half the center-to-center spacing
of the bars or wires being developed.

Reinforcement location factor -
Horizontal reinforcement so placed that more
than 12 inches of concrete is cast in the member
below the development length or splice (Wall)
use 1.3. All other reinforcement 1.0.

This is the length of a finger splice with deformed
wire. The splice is located on the left or right side
of the sheet. Length of the finger splice is measured
between the ends of each sheet.

This is the length of a cross splice or overlap splice
with smooth wire. The splice is located on the left
or right side of the sheet. Length of the splice is
measured between the ends of each sheet.

This is the length of a cross splice or overlap splice
with deformed wire. The splice is located on the
left or right side of the sheet. Length of the splice
is measured between the ends of each sheet.

Lap calculations are performed in accordance with
the ACI 318 Building Code. There are three possible
lap conditions: a smooth wire cross lap, a deformed
wire cross lap, and a deformed wire finger lap. The
lap values are displayed in a matrix providing the
designer with an easy to use tool in determining the
right splices length. Just enter the appropriate splice
length in the box.

This is the length of a finger splice with deformed
wire. The splice is located on the top or bottom end
of the sheet. Lenght of the finger splice is measured
between the ends of each sheet.

This is the length of a cross splice or overlap splice
with smooth wire. The splice is located on the top
or bottom end of the sheet. Length of the splice is
measured between the ends of each sheet.

This is the length of a cross splice or overlap splice
with deformed wire. The splice is located on the
top or bottom end of the sheet. Length of the splice
is measured between the ends of each sheet.

Pounds per hundred square foot represents the total
weight divided by the total area of concrete where
welded wire reinforcement is being used multiplied
by 100.