Type of Construction, Solid- and Wooden Staircases
The type of staircase construction can be changed at any point during insertion of the the staircase and can also be changed later over the properties dialog, whereby either a solid staircase or a wooden staircase can be specified.
Depending on the type of construction, different input fields are provided for steps, stringers etc. and also different construction materials are offered.
Under ‘Type dimensions’ you can set the ‘step offset’ for the staircase, i.e. the distance from the front edge of a tread to the rear edge of the tread below. You can also change the ‘Cover thickness’ and the ‘Thickness of walk planks’, i.e. the thickness of the concrete slab under the treads, measured at right-angles to the inclination of the stairs.
Each change to the staircase is processed immediately, and is shown optionally in the 3D preview.
If you select ‘Wooden stairs’ under ‘Stairs type’, the input fields under ‘Type dimensions’ also change. ‘Tread thickness’ is shown instead of ‘Facing thickness’, and ‘Stringer width’ instead of ‘Cover thickness’. In addition, there are input fields for ‘Stringer thickness’ and the distance between a tread and the bottom edge of the stringer (the so-called ‘Margin’). The ‘Nosing’ is again the distance from front edge of a tread to rear edge of the tread below. The ‘Step thickness’ is the thickness of the tread, the ‘Stringer width’ is the width measured at right-angles to the inclination of the stairs. The ‘Stringboard thickness’ is the thickness of the stringer and the ‘Distance tread to stringer’ specifies the distance between the front, top edge of a tread and the top edge of the stringer.