# Sheet metal roofing

# Tab -Parameters-.

effective width - coverage width of panel, indicated in mm
** Overall width** - total width of panel, indicated in mm
Minimum length - minimum length of the panel (in mm), specifies the minimum length of the sheet. For metal roofing sheets it should result from the formula: (minimum_number_of_modules*length_of_module)+length_of_laps (bottom and top)
Maximum length - maximum length of the panel (in mm), specifies the maximum length of the sheet. For slopes that exceed the maximum length, another sheet of panel will be added vertically. For roofing sheets, it should be derived from the formula: (max_length_of_modules * length_of_module)+length_of_overlaps (bottom and top)
The overlap (mm) - in the case of joining the sheets vertically, determines the length of the overlap. If a negative overlap value is given, the program will apply an expansion joint between the sheets
Module length (mm) - module length in mm, e.g. 350
Vertical installation direction - sheets to be installed from the top (ridge) or bottom (eaves) - applicable when installation method is specified horizontally
Horizontal installation direction - sheets to be installed from left or right - applies when installation method is specified vertically
Starting edge [mm] - value in the parameters defining the bottom margin of the covering (0-level with the slope)
Length rounding - the precision of the length calculation (in mm) is set to 1 to one mm, 10 to a centimetre, 50 to five centimetres
Upright laying - the method of laying sheets when the length of the slope exceeds the maximum sheet length. Selectable from largest - the maximum length sheet will be applied from the bottom and then the sheet with the missing length. proportionally - the sheets will be of equal length vertically Method of installation - vertically (from eaves to ridge), horizontally
Minimum pitch [°] - minimum roof pitch for the application of the given covering (information value)

# Tab -Lengths not available for production-.

In the table on the left, we specify with + the ranges of lengths not available for production in mm. On the right, a list of lengths not available for production is dynamically created based on the minimum length, maximum length and the list of ranges. The function works in the following way: if the sheet length calculated during the calculation is within the range of unavailable lengths, it will be adjusted upwards to the nearest length available for production