Doka 150F, Инструкция по сборке и эксплуатации, Страница: 14 / 68

14 999775002 - 02/2020
Structural design User Information Climbing formwork 150F
Structural design
Wind pressure
1) Determine the wind pressure as a function of the
wind speed, the building environment and the
structure height.
2) Use the relevant diagram, (A) or (B) .
Influence width of climbing brackets
Diagram (A) (wind pressure = 1.00 kN/m
2
)
Example
▪
Basic data:
- Diagram (A) (wind pressure = 1.00 kN/m
2
)
- formwork height: 4.00 m
▪
Influence width: 3.00 m
CAUTION
➤
If wind speeds > 72 km/h are likely, and
when work finishes for the day or before pro-
longed work-breaks, always take extra pre-
cautions to fix the formwork in place.
Suitable precautions:
- set up the opposing formwork
- turn the screwjack mechanism until the form-
work meets the top of the previously cast sec-
tion, and knock the fixing-wedges into place
Diagram
Wind pressure
[kN/m 2 ]
w
e
= c
p, net
x q
(Ze)
Example:
(A) 1.00
Where c
p, net
= 1.3:
Permissible wind speed = 126 km/h
(B) 1.365
Where c
p, net
= 1.3:
Permissible wind speed = 147 km/h
Follow the directions in the Calculation Guide
"Wind loads to the Eurocodes" when determin-
ing the wind pressure or ask your Doka techni-
cian!
Formwork height [m]
Influence width [m]
C Without Wind bracing MF/150F/K 6.00m
D With Wind bracing MF/150F/K 6.00m
9736-124
0.0 1.0 2.0 3.0 4.0 0.5 1.5 2.5 3.5
6.0
5.0
4.0
3.0
2.0
2.5
3.5
4.5
5.5
C D