This study is to propose a parallel string truss construction system with local lumbers of general distribution. The system consists of arrangement characteristics of the species processed on standard lines of residential pre-cutting machines, and it is easy to assemble as a parallel string truss. In order to verify the workability of this system and to obtain basic data on structural performance for practical use, joint element experiments and full-scale experiments were conducted. The results of these experiments were obtained as follows ;
- The elemental joint experiments were confirmed the mechanical properties of the different species of wood, number of screws, and shape of the specimen.
- The joint performance was considered to improve arrangements of the drift pins or screws.
- The full-scale experiments of 4.4m and 11m span were carried out. The mechanical properties have some differences performances for species of wood or truss span.
