Static Strength 

The following loadings are take into account::
LOADING CASE 1 (Crane working without wind):

Fatigue Strength

Fatigue is checked in loading case 2 . In overhead travelling cranes fatigue becomes important in higher crane groups (FEM 3, 4, ,5 and 6). Risk for failure can often be avoided by good design.

UPN Profiles

European Standard Channels
(DIN 1026-1: 2000)

Foundation and Support Calculation Basis of Jib Cranes (Simplified):

A, B; width and length of  base plate (A ≤  B)
W₁ = Lifting capacity of crane + weight of crane (kg_f)
W₂ = Total weight of rotating arm and supports (kg_f)
W₃ = Total weight of carrying column and base plate (kg_f) “At column axis”
L₁, L₂ = The distances between the action points of the weights or forces and column axis (cm)
A = Base plate width (cm)
M₁, M₂ = The moments caused by vertical forces (kg_f . cm)
F = The effective forces on base plate
f = The  load distribution under base plate.
∑M_d = Sistemi devirmeye çalışan momentler toplamı (kg_f.cm)
∑M_k = Devrilmeye karşı gelen momentler toplamı (kg_f.cm)

For the stability of the simplified system, the algebraic sum of all vertical resultant forces should be zero and the sum of clockwise and anticlockwise moments should be equal. Thus;

Rope Reeving Arrangement

The higher the number of falls means the lower the lifting speed and lifting height, but the higher lifting capacity of hoist. ie:
With hoist model CR3 of 2/1 falls means, 10 tons capacity with 4/1 falls, but at the same time half of lifting speed in the same FEM group.

Operation Instructions for Tower Cranes

1 - Tower cranes must be operated only by the assigned and authorized operator. Any other person must not operate the crane.

2 - Travelling personnel in load basket is forbidden.

3 - The loading capacity table – chart must be hanged available at the place where the hoist unit is in use at all times. It is forbidden to carry any load exceeding the maximum permitted load.

4 - It is forbidden to transfer the suspended loads above the persons. When absolutely necessary, the suspended load may be transferred above machinery and vehicles. Besides, there must not be any person under the load which are lifted or descended.