Info

Table 7.1. MC-90 - Minimum reinforcement ratio for a given value of Os which fulfils the condition Os > Osr. Value of corresponding (/max

Table 7.1. MC-90 - Minimum reinforcement ratio for a given value of Os which fulfils the condition Os > Osr. Value of corresponding (/max

These results are plotted in the following figure.

MC-90 Dmax vs sigmas

MC-90 Dmax vs sigmas

---DmjK tieor^icjl

50 100 153 20D 25C 3D0 350 4CJ 45D 5DC

Figure 7.5. Theoretical and actual values of Dmax, according to MC-90

---DmjK tieor^icjl

50 100 153 20D 25C 3D0 350 4CJ 45D 5DC

Figure 7.5. Theoretical and actual values of Dmax, according to MC-90

Using the EC2 formulation, the crack width is given by:

Peff J Es

asr is the stress calculated for the fully cracked cross section for the cracking moment. asr may be calculated by:

g = fct,effActkck = fct,effkck hcr (718)

Introducing the expression of asr into equation (7.10), and rearranging:

1,7a

0 0

Post a comment