In site lab when a mapping unit was rated as to is suitability for houses with basements a sever shrink-swell problem was noted. In order to evaluate the seriousness of this problem you also need to know the _________ of this mapping unit.
Answer: Drainage class
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.