Dear <<First Name>> <<Last Name>>,
Some important additions are being made to Structurae! As you will see below, material categories were introduced for bridges and viaducts in January. Similar categories are also available already for buildings although the application of the categories to the individual structures is still in progress. Towers and masts will also be classified by material in the near future. We hope these changes will make it easier for you to find what you are looking for on Structurae!
Chief Editor of Structurae