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Stairs
There are two approaches to the design of staircases. You can create the staircase and integrate it into your design, or you can reserve space in the building for the stairwell and design the stairs in detail later. This method is also applicable when making alterations to existing buildings where the stairwell cannot be altered. ARC+ provides a staircase generating tool for both methods.
Stairs by Parameters
The design of a staircase is based on a variety of parameters, some of which are defined, while others are a result of calculations based on the defined parameters.
For example, floor to floor height may be determined by planning constraints, and the maximum height of each riser may be limited by building legislation. On the other hand you may be free to specify the number of risers in the flight, or the number may have to be within a certain permissible range. In most cases more than one solution is available. For example, a floor to floor height of 3.00 meters could be equally served by a staircase of 17 risers of 17.64 cm or 18 risers of 16.66 cm.
The ARC+ staircase commands enable you to design and create stairs and handrails of various types and layouts. You are free to specify the parameters to be fixed and those to be calculated by the system. In addition, you can set the permissible ranges for the parameters. Before displaying the staircase, the system presents you with the results of its calculations, which you can accept or reject. The system then suggests another solution.
The result of these commands is either a three-dimensional solid staircase or a two-dimensional representation. The three-dimensional staircase is a regular ARC+ solid entity (type 3) and may be copied, manipulated, sectioned or modified as any other entity.
The landing created in models 1 to 5 is an independent solid slab with the same width and length as the flight width and the same height as the specified or calculated rise.
Each step in the winding section of the staircase (models 6 to 13), all light steps and the column in the spiral stairs are also independent solid entities.
Stairs by Defined Area
This method creates special winding type stairs. These stairs are based on a walking line, which is a line at a certain distance from the outer side of the staircase, along which the tread size is measured.
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