| Specimens section | Specimens with inclined stiffening rib |
| Specimens without inclined stiffening rib | ||||||||||||||
| Web | Flange |
| Web | Flange | stiffening rib | ||||||||||||
| t | b | l | t | b | l | t | b | l | t | b | l | t | b | l | |||
| Joint area | 3 | 650 | 650 | 5 | 152 | 650 | 3 | 650 | 650 | 5 | 152 | 650 | 6 | 75 | 920 | ||
| Non-joint | 3 | 650 | 1300 | 5 | 152 | 1300 | 3 | 650 | 1300 | 5 | 152 | 1300 | ― | ― | ― | ||
| Arm beam | 6 | 284 | 1789 | 8 | 200 | 1789 | 6 | 284 | 1789 | 8 | 200 | 1789 | ― | ― | ― | ||