Tirranna was personally designed by Frank Lloyd Wright in 1959 and was under construction at the time of his death. ABC has been retained to evaluate and oversee correction of a variety of complex problems relating to the exterior envelope, in particular the sweeping roof forms which incorporate multiple skylights and unusual edge conditions.
![](http://vbarch.com/wp-content/uploads/2013/10/tirrianna-house-featured1.jpg)