during power failures. Gate arms shall be constructed out of wood, steel,
fiberglass, or aluminum, as specified by the manufacturer for the given
lengths as shown on the drawings. Gate arms shall be covered with 406 mm
16 inch wide reflectorized red and white sheeting. Each gate shall be
furnished with a spare gate arm. Gate operator cabinets shall be
constructed of galvanized steel, or aluminum and shall be painted
manufacturers standard color as approved. Each gate operator shall be
provided with an obstruction detector that will automatically reverse the
gate motor when an obstruction is detected. The obstruction detector shall
be any of the following 3 types: An electronic loop vehicle detector
buried in the road, a photocell electric eye mounted on the gate operator,
or a safety strip mounted on the lower edge of the arm. The detector
system shall be automatically deactivated when the arm reaches the fully
lowered position. Slab size and anchorage for gate operator shall be per
manufacturer requirements.
2.9.6
Vehicle Barrier Vertical Arm Gate (Traffic Arm)
A traffic arm, as a separate piece of equipment, will be included with each
non-portable active vehicle barrier as part of the barrier safety operating
system. This traffic arm shall automatically deploy (close) when the
emergency up button is activated and open when the vehicle barrier is
reset. This traffic arm will not be equipped with an automatic obstruction
detector.
2.10
FINISH
Surfaces shall be painted in accordance with requirements of Section 09900
PAINTS AND COATINGS. The roadway plate shall have a nonskid surface
painted white with reflective red [100] [150] mm [4] [6] inch wide red
reflective stripes 100 mm 4 inches apart. The barrier front shall be
painted white and have [100] [150] mm [4] [6] inch wide reflective red
stripes 100 mm 4 inches apart. The diagonal striping should point down and
outward from the center of the device. Bollards shall be painted white
with [50] [75] mm [2] [3] inch wide reflective red diagonal stripes. The
barrier crash gate shall be painted as specified by purchaser and the crash
beam shall be painted white with 75 mm 3 inch wide reflective red diagonal
stripes.
2.11
CONCRETE
The concrete shall conform to Section [03300A CAST-IN-PLACE STRUCTURAL
CONCRETE][03300N CAST-IN-PLACE CONCRETE].
2.12
WELDING
Welding shall be in accordance with AWS D1.1/D1.1M.
2.13
PAVEMENT
**************************************************************************
NOTE: Edit this paragraph to provide the
specification Sections required, depending on the
type of the existing pavement to be matched.
**************************************************************************
After placement of the vehicle barrier, the pavement sections shall be
replaced to match the section and depth of the surrounding pavement.
Pavement shall be warped to match the elevations of existing pavement.
SECTION 02840
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