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User’s manual ConCrete
4.2. Parameters for reinforcement steel
Figure 37 : Parameters for reinforcement steel
We can take a look at and change the parameters of the reinforcement
steel by clicking the first icon of the first palette of Figure 3: now a new
dialog box appears on the screen (Figure 37). In this dialog box we can
change all the parameters of the reinforcement steel freely. The values
of the steel quality are characteristic values and are expressed in N/mm².
The safety factor is the factor which has to be applied to the
characteristic values in order to obtain the design value of the steel
quality. This design value will be used in the ultimate limit state. In the
serviceability limit state under the rare combinations the maximum stress
can be limited to a fraction of the yield stress (80% according to
Eurocode). The cover is the net distance between the bar and the outer
surface of the concrete, as indicated in Figure 38. When calculating the
effective depth, the real height of the beam is decreased with this cover
and with 10 mm extra to take the thickness of the reinforcement bars into
account (which are unknown at that moment).
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