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30
Escort Stair Lift Installation Manual
MEASURING THE RAIL
Appendix I
Figure 30-1
MEASURING THE RAIL
1.
Measure from the nose of the top step to the point
on the landing where the rail will rest
[Figure 30-1].
Enter this measurement into BOX 1 of the Rail Length
Worksheet below.
2.
To fi gure the overall length of the rail you must
know the fl ight angle of your stairway. Measure your
rise and run as shown in
Figure 30-2
. Use the chart on
page 31 and its key to fi gure the fl ight angle and the
corresponding overrun. Enter the overrun into BOX 2
of the Rail Length Worksheet below
RISE
RUN
RISE
RUN
RISE
RUN
3.
Add BOX 1 and BOX 2. Enter the value into BOX 3.
This is the overall length of the rail.
Figure 30-2
NOTE: Seat Height Compensation
•
The Rail length shown in BOX 3 of the
Rail
Length Worksheet
will position the footrest
level with the upper fl oor.
•
The seat height will be 18 inches. To raise the
seat height, additional rail length must be
added.
•
The length shown in the
Overrun to Raise
Seat
column of the
Rise and Run Chart Key
is
the length of rail that must be added for each
additional inch of seat height.
•
The maximum allowable overrun is 12 inches.
BOX 1
BOX 2
BOX 3
Rail Length Worksheet