National ramp ALUMINUM SOLID, Руководство по установке

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Liberty Series™ Ramp Installation Guide-Revision 8/1/2020
ƒ DOWNGRADE 
a downward slope of the ground, from the ramp’s start to its end. If the
measured height at the ramp’s ending is greater than the measured height at the start,
that property has a downgrade.
ƒ
CROSS SLOPE 
a change in slope that runs across the width of the ramp rather than the
length. Where there is a cross slope, the legs on each side of the ramp will be at different
heights to make sure the ramp is level across its width.
LANDING PAD 
a 5
'
x5
'
level surface used at the end of the ramp if a hard level surface does not
exist at the site.
LEGS 
supports for the ramp sections or platforms.
DUAL-LINE HANDRAIL 
handrail design featuring two handrails, one located on the top, and one in
the middle, that are parallel with the ramp’s travel surface.
VERTICAL PICKETS 
railing design with vertical pickets affixed to the ramp instead of a dual-line
handrail. Some municipalities require picket handrails for all or part of the ramp system, depending
on height, and some consumers choose them for added security, especially when the ramp will be
used by children or animals.
THRESHOLD RAMP 
a ramp without handrails, used to provide a smooth transition over short
elevations, including door thresholds or steps.