The main stairwell of this building is nicknamed "The Birdcage" because the street facing facade is comprised of a mesh covered open steel structure. This design creates a light filled, airy space, but also gets rather wet during wind-driven rain storms. One exceptionally heavy storm in 2008 caused leaks in some odd places. This investigation focuses on how water is getting through the CMU walls, and will be a useful resource in planning future corrective action.