3. BASICS TO ATTAIN THE GOAL
Basically, construction work consists mainly of the physical movement of materials from the
origin to design coordinates. Taking concrete work that forms a large proportion of
construction work as an example, only the hydration step is a chemical reaction and other
steps are nothing but physical movements. Most of other types of work, such as formwork,
rebar arrangement work, structural steel erection work, interior finishing work and building
frame work, consist of physical movement of materials.
Accordingly, ordinary construction work does not contain many difficult activities. The
presence of waste can be found by not only specially trained workers but also by the workers
who are experienced in the type of the work if the workers are given incentives and are