MOMENT [KNm] |
||||
Position of boom |
Moment(boom side) → + |
|||
I | with concrete in pipe-line |
→ 1088 kNm |
||
II | without concrete in pipe-line |
→ 301 kNm |
||
III | without concrete in pipe-line | → 29 kNm |
Total wieght [kg] - boom, table, base(with oil), motor, pump, (+concrete) |
|
In operation 10,130 kg |
Out of operation 9,080 kg |
Wind-exposed areas [m²] | ||||
Position of boom | Wind-exposed area | Center of gravity distance | remark | |
I II | 17.9 m² boom-side 17.9 m² boom-side | Xg1 = 10.9 m Xg2 = 4.5 m | Wind surface perpendicular to frontal wind | |
I / II III | 5.7 m² 16.8 m² | Ys = 0.5 m Ys = 5.4 m | Exposed area in frontal wind |
Comment : lateral thrust due to wind is calculated according to DIN 1055
Absolute altitude [m] |
0-8 |
8-20 |
20-100 |
Above 100 |
W [N/m²] |
800 |
1,280 |
1,760 |
2,080 |
F = W x A |
||
F : wind force |
W : lateral thrust due to wind |
A : wind surface area |