EUROCODE 2 WORKED EXAMPLES - Federbeton

EC2 – worked examples 4-5
Considering that the TT element is cast under procedures subjected to a highly efficient
quality control, in which the concrete cover length is also assessed, the value of Δcdev can
be taken as 5 mm.
We obtain from relation (3.1):
c = c + Δc = 25 + 5 = 30 mm .
nom min dev
Calculating now the concrete cover for longitudinal bars.
We have:
c = 12 mm .
min,b
We obtain from table 4.4N - EC2:
c = 25 mm .
min,dur
Moreover:
Δc dur, γ = 0 ;
Δc dur,st = 0 ;
Δc = 0 .
dur,add
From relation (3.2):
cmin = max (c min,b ; cmin,dur +Δcdur, γ −Δcdur,st −Δc
dur,add;
10 mm) =
= max (12; 25 + 0 – 0 – 0; 10 mm) = 25 mm .
We obtain from relation (3.1):
c = c + Δc = 25 + 5 = 30 mm .
nom min dev
Note that for the ordinary reinforcement bars, the concrete cover for stirrups is “dominant”.
In this case, the concrete cover for longitudinal bars is increased to: 30 + 8 = 38 mm .
Table of Content
Fig. 4.3
Calculating now the concrete cover for strands.