10
PROPER GATE DESIGN
IMPORTANT-
A GATE OPERATOR CANNOT OVERCOME A POORLY DESIGNED GATE.
Since the gate is a major component of the system,
great care and concern must be given to the gate
design.
USAutomatic, LTD is not responsible for
any damage to a gate on which the gate operator is
installed. A poorly installed or misadjusted gate could be
damaged. It is the responsibility of the installer to verify
proper gate installation prior to operator installation.
As a general rule, a gate, which is to be automatically
operated, must be stronger and smoother than one
operated manually.
• Does the gate swing smoothly without binds or
excessive resistance?
• Swing gates should swing level and plumb to
prevent the operator from having to lift the gate
open or closed.
• Swing gates should not require a wheel to support
them. Wheels create drag, which will cause operator
problems. A wheel is generally a sign of a weak
hinge system or a weak gate frame.
• Is the gate frame of substantial strength without
excessive weight?
• Will the frame withstand normal wind load conditions
without sway or vibration?
• Will the gate close correctly without being hand-
guided or lifted to close?
• Are the hinges suited for an automatic gate operator?
We recommend bearing type hinges to reduce
friction drag.
• Will a reinforcement brace be required to attach the
linear actuator to the gate or does a suitable cross
member exist in the gate design?
If any of these problems exist, they must be corrected
to achieve a reliable automatic gate system.
All Gates must have smooth bottom edges, no
protrusions should exist. If gate hardware or sensors
protrude, they must have smooth surfaces free of any
sharp cutting edges that do not exceed ½ inch beyond
the base of the gate. (ASTM F2200: 4.8)
Gate MUST be level
Gate should not require a
wheel for support.
Gate should not be unlevel
due to weak frame.
Gate should not be unlevel
due to unlevel post.
Post
MUST be
plumb
