private void RecalcSmallVat()
{
lbVatSmallD1Val.Content = $"{vat_.UpperDiamaterInScale()} m";
lbVatCalcD1Small.Content = $"{vat_.UpperDiamaterInScale()} m";
lbVatSmallD2Val.Content = $"{vat_.LowerDiamaterInScale()} m";
lbVatCalcD2Small.Content = $"{vat_.LowerDiamaterInScale()} m";
lbVatSmallHVal.Content = $"{vat_.HeightInScale()} m";
lbVatCalcHeightSmall.Content = $"{vat_.HeightInScale()} m";
lbVatSmallSizeVal.Content = $"{vat_.SteelSizeInScale()} m^3";
}