Abstract: A construction system for a module of a dwelling the main elements of which are made of plastic material includes a set of hollow profiled beams (1, 1?) of elongate rectilinear shape of type 1 and of type 2. The beams (1, 1?) include at each end (5, 5?) a transverse passage opening (6, 6?). The transverse passage opening (6) of a beam (1) of type 1 comes to be nested with the transverse passage opening (6?) of a beam (1?) of type 2 when the two beams (1, 1?) are assembled end to end at a right angle leaving a passage opening (6, 6?) between the two ends (5, 5?) of the beams (1, 1?). Two beams (1) of type 1 can be assembled with two beams (1?) of type 2 to form a rectangular frame. The system further includes a set of corner assembly elements (2, 2?), each assembly element (2, 2?) including a body intended to pass through the transverse passage opening (6, 6?) of the beams (1, 1?) of type 1 and 2.

Abstract: A construction system for a module of a dwelling the main elements of which are made of plastic material includes a set of hollow profiled beams (1, 1?) of elongate rectilinear shape of type 1 and of type 2. The beams (1, 1?) include at each end (5, 5?) a transverse passage opening (6, 6?). The transverse passage opening (6) of a beam (1) of type 1 comes to be nested with the transverse passage opening (6?) of a beam (1?) of type 2 when the two beams (1, 1?) are assembled end to end at a right angle leaving a passage opening (6, 6?) between the two ends (5, 5?) of the beams (1, 1?). Two beams (1) of type 1 can be assembled with two beams (1?) of type 2 to form a rectangular frame. The system further includes a set of corner assembly elements (2, 2?), each assembly element (2, 2?) including a body intended to pass through the transverse passage opening (6, 6?) of the beams (1, 1?) of type 1 and 2.