In a large skillet, cook beef over medium heat until no longer pink; drain. Set aside and cool slightly while preparing other ingredients.

In a very large serving bowl, combine lettuce, grated cheese, beans, tomatoes, olives, and onions. Toss gently to blend.

Just before serving, add cooked ground beef and corn chips; toss gently to combine with salad ingredients. Begin drizzling salad dressing over salad mixture and lightly toss salad until the desired amount of dressing is used.