2.3.1. Hamdy Seif Al-Nasr House (1945)

Another building designed by Hassan Fathy that incorporated the use of windcatchers, more specifically, wooden ones, which is called Hamdy Seif Al-Nasr House, 1945 [28]. The windcatcher on the left of the dome directed airflow past a *salsabil* (cooling plate) that was kept damp using a continuous trickle from the earthenware water pot held above it (Figures 19 and 20) [16]. Since then, a roof stairway was added to the air shaft, changing its original design [28].

**Figure 19.** Section of Hamdy Seif Al-Nasr House, 1940s, the arrows signify the air flow from the wind catcher and into the space it ventilates and red boxes indicate the location of the wind catchers. Reprinted with permission from [29]. 2023. Courtesy of the Rare Books and Special Collections Library, The American University in Cairo.

**Figure 20.** (**a**) Sections 'A' and 'B' show the cooling mechanism used in the windcatcher of Hamdy Seif Al-Nasr House, the arrows signify the airflow. Reprinted with permission from [30]. 2023. Courtesy of the Rare Books and Special Collections Library, The American University in Cairo. (**b**) The earthenware water pot is used to drip water and provide evaporative cooling in the windcatcher used by Hassan Fathy. Reprinted with permission from [31]. 2023. Courtesy of the Rare Books and Special Collections Library, The American University in Cairo.
