MOMENT [KNm]

Position of boom

Moment(boom side) → +        

I

with concrete in pipe-line

→ 1,416 kNm

II

without concrete in pipe-line

→ 464 kNm

III

 without concrete in pipe-line

 → 33.5 kNm

TORQUE MOMENT [kNm]

In operation 312.76kNm

Out of operation 177.44kNm

Total wieght [kg] - boom, table, base(with oil), motor, pump, (+concrete)

In operation 13,750 kg

Out of operation 12,560 kg

Wind-exposed areas [m²]

Position

of boom

Center of gravity distance

remark

I

II

22.3 m²  boom-side

22.3 m²  boom-side

Xg1 = 12.3 m

Xg2 = 4.7 m

Wind surface perpendicular to frontal wind

I / II

III

7.4 m²

21.3 m²

Ys = 0.6 m

Ys = 5.6 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