ABSTRACT
This chapter shows that an object-based Computer Aided Design programming is used to take advantage of standardization to handle the schematic design, sizing, layout for services in a building ceiling void. The implementation includes the user interface, the Case Based Reasoning library as well as the constraint library within the algorithms for the case adaptation and the solution enumeration. The user interface is composed of several panels, which include the data input, the zoning process and the equipments generation. Fresh air is provided by a central air-handling unit. Air supply to the space is via slot diffusers in the perimeter zones and the square diffusers internally. In practice, once the non-services elements have been defined, the services are located approximately in order from the most to least geometrically constrained. The space class contains two sub-classes: the zone class and the structural element class.
