protected override string BuildStringSTEP()
{
return base.BuildStringSTEP() + "," + ParserSTEP.DoubleOptionalToString(mUpperVaporResistanceFactor) + "," + ParserSTEP.DoubleOptionalToString(mLowerVaporResistanceFactor) + "," + ParserSTEP.DoubleOptionalToString(mIsothermalMoistureCapacity) + "," + ParserSTEP.DoubleOptionalToString(mVaporPermeability) + "," + ParserSTEP.DoubleOptionalToString(mMoistureDiffusivity);
}