Abstract: The invention relates to the field of construction and in particular to a modular construction system used for building of construction modules. The construction system comprises plurality of flat elements (1) with identical thickness C and having slots (3) on at least one of its long sides (4), as the slots (3) are located at a distance from each other so that the flat elements (1) can intersect each other through their slots (3) in order to form a grid. The elements (1) of the system have slots (3) located at equal distances n or b from each other where the ratio n:b is within the range from 1:1 to 1:10. The building construction module is made as three-dimensional frame structure shaped like polyhedron including a floor (20), a ceiling (21) and at least two walls (22) grids connected together. The grids are made by intersecting through slots (3) flat elements (1).

Abstract: The invention relates to the field of construction and in particular to a modular construction system used for building of construction modules. The construction system comprises plurality of flat elements (1) with identical thickness C and having slots (3) on at least one of its long sides (4), as the slots (3) are located at a distance from each other so that the flat elements (1) can intersect each other through their slots (3) in order to form a grid. The elements (1) of the system have slots (3) located at equal distances n or b from each other where the ratio n:b is within the range from 1:1 to 1:10. The building construction module is made as three-dimensional frame structure shaped like polyhedron including a floor (20), a ceiling (21) and at least two walls (22) grids connected together. The grids are made by intersecting through slots (3) flat elements (1).