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

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

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