Hi, I have noticed the following issues are still present in SBD 2020 (i'm using version 20.0.177.0)
- Calculation of K1 and K2 values - the k1 and k2 values calculated by SBD seem to be always above 1.9, however the graphs in AS5100 (figure 3.1.7.2 and figure 3.1.8.3) don't ever have values above 1.8.
- Calculation of K3 value - the value for k3 (maturity coefficient) calculated by SBD appears to be using natural log rather than log base 10, giving low values for the k3 factor and potentially underestimating losses due to creep. I am confident that the formula in clause 3.1.8.3 of AS5100.5 should be log base 10 rather than natural log (it just has "log", without specifying whether it is natural log or base 10 or other). Note that in previous versions of the australian codes, this k3 factor was given as a chart rather than a factor, using base 10 correlates roughly with the previous charts, however using natural log yields values much lower. see attached image for this comparison.
Can the developers confirm when these issues will be addressed?
