The building construction practice involves technical drawings but at the same time there are certain things which are best explained on site by onsite sketching or by 1:1 drawing it onsite. Even if there are technical drawings provided the communication between the labour happens with the help of quick sketches on the walls (As seen in the images above).
The simplicity in the application of materials is far preferable in the architectural community to teach and to practice with material from the design stage to cut-to-build stage. Ultimately the most important thing to consider is the ease of construction and communication, to achieve that there are various (ways of communicating or sharing thoughts