| Metal mesh or screening is used
to enclose the sides of the stage for both types of construction, ladder
or truss. The screening helps keep tools or materials form falling out
of the stage, a safety requirement on permanent equipment design, in consideration
for the general public below who may be at risk. Due to a building’s geometry or its roof structural grid, one elevation may require different
length stages on the same roof. It is impractical of an owner to purchase numerous stages or for a
window-cleaning contractor to bring different length stages to the same building.
The custom designed and fabricated stage is therefore
often made to be modular, utilizing stage sections that couple together
in various lengths as needed for any of the building’s roof top
areas. To accomplish this, the stage is constructed in modular lengths
from as short as two feet to as long as twenty feet. The stage’s
end sections contain the power units and the center sections pin together
to create various lengths, like adding leaves to a dining room table.
Both the truss type and the ladder board variety of stages can incorporate
the modular design.
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