The data was entered into Excel and plotted in a 3-D bar chart.
Figure 30: East living room roof chart profile, looking SW. Arrow indicates location of drain
The Freeman House, a textile block building by Frank Lloyd Wright, has a long history of water infiltration problems which continue today. Techniques were used to determine the primary cause of water infiltration. Roof profile analysis was used to determine the slope of the flat kitchen and living room roofs, x-ray diffraction was used to study the composition of the efflorescence present throughout the building, and Karsten pipe analysis was used to determine the absorption rate of the blocks.; The roof was found to be sound, and the gross morphology of the efflorescence in the kitchen suggests that infiltration through the roof is not necessarily the source of infiltration in that location. X-ray diffraction revealed the efflorescence to be thenardite, a potentially very destructive salt. Karsten pipe analysis showed astounding absorption in the block, leading to the conclusion that the primary source of water infiltration is via the blocks themselves.