Architectural Ceramic Assemblies Workshop: Bioclimatic Ceramic Assemblies IV' presents terra cotta design research, conducted under the auspices of the annual Architectural Ceramic Assemblies Workshop (ACAW), between architectural firms and terra cotta manufacturer Boston Valley Terra Cotta. It chronicles the work of architectural firms Kieran Timberlake, Kohn Pederson Fox (KPF), HKS, Payette, Pelli Clarke Pelli, SHoP Architects, Skidmore Owings and Merrill (SOM), Studios Architecture and two academic teams from Alfred University and the University at Buffalo. The book presents a unique model for exploring the state of the art in terra cotta design through the production of experimental prototypes. These include rain screen facade systems, urban sound devises, structures, massive wall systems and furniture. Now in its fifth year, this invitation only workshop has teams collaborate with the manufacturer to develop a design that engages bioclimatic concerns and pushes material and manufacturing possibilities.