Abstract: A modular construction system utilizes building components or panels formed of high strength plasticized concrete. Panels are formed with two or more linear peripheral edges fitted with mortises. FRP pultruded tenons are used to connect aligned mortises for adjacent panels. Walls, crown beams and roof panels can be so formed and assembled. Hollow corrugated panels are suitable for forming beams and interior partitions. Beams can be rested on regularly spaced piles and then floor panels on the beams, walls on the floor panels, crown beams on the walls and roof panels on the crown beams, buildings can be erected with a minimum of tools or specialized knowledge. The resulting structure is substantially impervious to environmental hazards, particularly relevant in more primitive locations.