# Entering dimensions

The input of roof / façade dimensions can be carried out in the programme in a number of ways.

Some typical roofs are entered in the roof library. Using the library reduces the time for entering the object dimensions to a maximum. The use of the roof library is described on Roof library .

Unusual roofs can be entered slope by slope, so that in the drawing the bottom edge is the edge of the eaves and the top edge is the apex of the slope (ridge). Slopes are represented by a set of shapes. Each shape consists of a list of points. A point is the vertex of a slope shape. Each new slope has at least one shape. The first, default and required slope shape is the slope outline (contour). The points of this shape define the shape and size of the roof slope. If the slope has more than one shape defined, the second and subsequent shapes are the openings in the slope.

Details on Slopes

Some slopes are very typical (isosceles triangle, rectangle, trapezoid, etc.). To facilitate the introduction of such slopes into the roof, the programme provides a slope repository option. This option contains several slopes of a typical shape which can be added by specifying characteristic values of the figure (e.g. base of triangle + height of triangle). More on the use of slope repository and shape repository on the dedicated tutorial pages.

If the shape of the slope is completely unusual, use the Draw shape option, which allows you to create any shape based on the dimensions you have.

Once the slope/wall has been created, you can immediately specify where the sheets are to be joined vertically or horizontally. This is particularly applicable when the design specifies the location of the joints (for facades, the vertical columns on which the horizontal sheets are joined). Page Defining splits

Slopes with a specific slope can be combined to form a roof in the 2D view. The created 2D roof view not only makes it easier to identify the individual slopes on the roof, but also provides additional data for the system, which enables effective calculation of product sets such as guttering, soffit or roofing system (with flashings). Find out more about how to use 2D view on the dedicated page.