Assuming you are referring to non-cash donations, please follow these steps in TurboTax Online to enter:
Thanks. I've done that, but the selections available (i.e. those you list) do not apply to building material categories (e.g. bulk wire, flooring, electrical & plumbing fixtures ).
You can choose "Other personal property" and then "Continue" on the next screen you will write a description of the property where you can add "Building Materials Wire, flooring, electrical & plumbing fixtures."
Your screens will look something like this: