ASTRS                                                              Menu: STTUS
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Sets the permitted range for the stairs parameters.

         1.  (NUM) 2H+B = (lowest highest) <0.61 0.65>
         2.  (NUM) rise = (lowest highest) <0.14 0.22>
         3.  (NUM) tread = (lowest highest) <0.22 .32>
         4.  (NUM) no. of stairs in flight (lowest highest) <3 17>
         5.  (NUM) layer no. for stairs (1-255) <1>
         6.  (NUM) color of stair flight (1-16) <1>
         7.  (NUM) thickness of handrail (square section) <0.07>
         8.  (NUM) height of handrail above step <1>
         9.  (NUM) distance of handrail from edge of stair <0.075>
         10. (NUM) color of handrail (1-16) <1>
      The following prompts apply to spiral stairs only.
         11. (NUM) no. of steps in winding part (3, 5, 7) <3>
         12. (NUM) headroom for spiral stairs <3>
         13. (NUM) horizontal angle for measuring spiral stairs headroom <320>
         14. (NUM) minimum width of step in spiral stairs <0.1>

Description

This command sets the allowed ranges and the default values of the parameters
used for stairs created using the \strcs command.

The ranges are set so that when the system calculates a new staircase it
checks that the resultant parameters fall within the specified range only.

The parameters and default values for which the ranges are set are:

Parameter               Description

All stairs:
1 - 2H+B                The globally accepted formula.
2 - Rise                Height of an individual step.
3 - Tread               Width of individual step.
4 - No of stairs        The number of stairs in an individual flight.
    in flight
5 - Layer no.           The layer number within which the
    for stairs          stairs are going to be placed in the system.
6 - Color of            The color of the stairs.
    stair flight
7 - Thickness           The thickness of the handrail (square section)
    of handrail
8 - Height of handrail  The height of the handrail from the nose of the step
                        to the upper surface of the handrail irrespective of
                        the thickness of the handrail.

9 - Distance of         The distance from the center of the handrail to the
    handrail from       outer edge of the stair
    edge of stair       0 = on the edge of step
                        - ve value = beyond edge of step
                        +ve value = toward inside of step

NOTE: No adjustment is made to the handrail at the corners (to lengthen or
shorten them).  If the distance is negative, the handrail is beyond the edge
of the step and the balusters will not be in contact with the step.

10-  Color of handrail  The color of the handrail.
11-  No. of steps       The number of wedge shaped steps for the turn in the
     in winding part    staircase when the staircase is not to have a
                        rectangular landing but is going to continue climbing
                        while the staircase changes direction.
Applicable to spiral stairs only:
12-  Headroom           The height from the floor or the nose of the stair to
                        the underside of the step directly above.
13 - Angle for          The horizontal angle from the first step to the point
     measuring          which the headroom is to be measured.
     headroom
14 - Minimum width of   The minimum width of a wedge shaped stair
     spiral step on     (internal side of stair).
     narrow side

Default ranges exist for each parameter.  When the parameters and the current
values are displayed, press ENTER to accept the current value or type the new
value(s) and press ENTER to change the value.

The new values are saved in a file called STAIRS.ARC and will be used as
defaults for the current working directory.  Different sets of values may be
saved in separate directories for different projects.

NOTE 1: Do not exit the command in the middle by starting a new command as the
new values will not be saved.  If you want to save the new values but exit in
the middle of the command, type `0' as the new value for the current parameter
and press ENTER, except in prompt 9 (distance of handrail) where 0 is a valid
parameter value.
