Table 13 Comparison between sections and volume percentage difference.
From: Optimization of roof slope, design and wood strength classes in timber Fink type truss
Strength class | Slope | Bottom chord | Top chord | Diagonals | % volume difference |
|---|---|---|---|---|---|
D20 | 5° | 125 × 300 mm | 125 × 225 mm | 125 × 75 mm | 324 |
11° | 75 × 75 mm | 75 × 75 mm | 75 × 75 mm | ||
D30 | 5° | 100 × 300 mm | 100 × 250 mm | 100 × 75 mm | 254 |
11° | 75 × 75 mm | 75 × 75 mm | 75 × 75 mm | ||
D40 | 41° | 100 × 75 mm | 100 × 75 mm | 100 × 115 mm | 215 |
11° | 75 × 75 mm | 75 × 75 mm | 75 × 75 mm | ||
D50 | 39° | 100 × 75 mm | 100 × 115 mm | 100 × 115 mm | 240 |
9° | 75 × 75 mm | 75 × 75 mm | 75 × 75 mm | ||
D60 | 40° | 100 × 75 mm | 100 × 115 mm | 100 × 115 mm | 250 |
9° | 75 × 75 mm | 75 × 75 mm | 75 × 75 mm |
