Advanced Package Training Scaffolding 2011.1 - Scia-Software GbR

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Advanced Training
In our example the structure was unclad. We will take a look at the force parallel to the façade, so cf =
1,3.
The site coefficient cs :
Cladding condition of the
system configuration
Site coefficient
Normal to the façade Parallel to the façade
Unclad 0,75 1,0
Clad 1,0 1,0
NOTE: The values for the site coefficients correspond to a façade with a solidity ratio ϕB= 0,4; see also EN12811-1.
For an unclad structure, the wind parallel to the façade, results in cs = 1,0.
For each beam the force can be calculated as a line force as shown below:
= ∙ ∙ ∙
= 1,0 ∙ 0,0483 ∙ 1,3 ∙ 870
= 54,6 = 0,055
This load is applied on the beams shown below (the toeboards are not taken into account, because the
force coefficient is only available for tube profiles):
So the total force inserted is:
0,055 kN/m x
[(2+2x0,5)x 2,57m
+ (2x0,5)x 2m +3,257]
= 0,055 kN/m (12,97m)
= 0,71 kN
In the calculation of “6. Load cases”, a load of 0,17kN/m² has been taken into account. This value
multiplied with the surface (= 2m x 2,57m) gives a total force of 0,68kN.
So the two option results in a value close to each other.