private void readAluminumDesignProps(XmlNode node)
{
//MaterialDesignProps dProps = mat.DesignProperties;
//if (dProps is AluminumDesignProps)
//{
// AluminumDesignProps props = (AluminumDesignProps)dProps;
// // xml.WriteStartElement("Material");
// readAttribute(node, "Material", mat.Name);
// readAttribute(node, "AlumType", props.Type.ToString());
// readAttribute(node, "Alloy", props.Alloy.ToString());
// readAttribute(node, "Ftu", props.Ftu.ToString());
// readAttribute(node, "Fty", props.Fty.ToString());
// readAttribute(node, "Fcy", props.Fcy.ToString());
// readAttribute(node, "Fsu", props.Fsu.ToString());
// readAttribute(node, "Fsy", props.Fsy.ToString());
//}
}