Yes, constructions is a Scrabble word!

Noun

1. The act of constructing something
2. A group of words that form a constituent of a sentence and are considered as a single unit
3. The creation of a construct; the process of combining ideas into a congruous object of thought
4. A thing constructed; a complex entity constructed of many parts
5. Drawing a figure satisfying certain conditions as part of solving a problem or proving a theorem
6. An interpretation of a text or action
7. The commercial activity involved in repairing old structures or constructing new ones