Studies on lunar base construction conducted by the writers' research
group are summarized. A desirable lunar base design was first discusse
d by employing a systems engineering approach and by defining an evolu
tionary scenario, which emphasized resource utilization. Several lunar
-base-related concepts were examined from the viewpoint of constructio
n engineering including construction materials, structural design, and
construction methods. The research also addressed resource utilizatio
n for the production of oxygen and construction materials. A commerici
al approach toward future lunar development is proposed.