To provide construction material elements and construction direction capable of obtaining a building equipped with a required air-conditioning function by simple work.

The construction material elements are constituted by having construction material element bodies and the piping section integrally molded in the construction material element bodies, the piping section integrally molded in advance is connected thereto by only consecutively coming into contact with the construction material elements to form a required heat transfer medium course, and a building equipped with the air conditioning function making use of radiant heat can thereby be easily provided.