Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: Think about what happens when you build something. What are you doing? You're standing it up. How do you say "to stand" in Japanese? たてる. That's the reading of this word as well. If you think about it they're similar!