| LENGHT OF THE PITCH | SLOPE OF THE PITCH |
| from 0 to 5 meters | 30% |
| from 5 to 6 meters | 33% |
| from 6 to 7 meters | 36% |
| from 7 to 8 meters | 40% |
| from 8 to 10 meters | 46% |
| from 10 to 12 meters | 52% |
| from 12 to 14 meters | 60% |
DEGREE/% COMPARISON TABLE AND CALCULATION COEFFICIENT OF INCLINED SURFACE
| SLOPE | Coefficient for the calculation of the surface of the roof | |
| percentage (%) | degrees (°) | |
| 1,75 | 1 | 1,000 |
| 3.50 | 2 | 1,001 |
| 7,00 | 4 | 1,002 |
| 10,51 | 6 | 1,005 |
| 14,05 | 8 | 1,011 |
| 17,74 | 10 | 1,016 |
| 21,26 | 12 | 1,022 |
| 24,93 | 14 | 1,030 |
| 28,67 | 16 | 1,039 |
| 32,49 | 18 | 1,050 |
| 36,40 | 20 | 1,063 |
| 40,40 | 22 | 1,078 |
| 44,52 | 24 | 1,093 |
| 48,77 | 26 | 1,110 |
| 53,47 | 28 | 1,132 |
| 57,74 | 30 | 1,152 |
| 62,49 | 32 | 1,177 |
| 67,45 | 34 | 1,204 |
| 72,65 | 36 | 1,233 |
| 78,13 | 38 | 1,268 |
| 83,91 | 40 | 1,290 |
| 90,04 | 42 | 1,345 |
| 96,57 | 44 | 1,390 |
| 100,00 | 46 | 1,412 |
| 103,55 | 48 | 1,440 |
| 111,06 | 50 | 1,493 |
| 119,17 | 52 | 1,555 |
| 127,99 | 54 | 1,620 |
| 137,64 | 56 | 1,700 |
| 148,28 | 58 | 1,790 |
| 160,03 | 60 | 1,886 |
| 173,20 | 62 | 1,999 |