FIELD: construction engineering. SUBSTANCE: cruciform structures are used as internal window frameworks for glazing of buildings and other objects. Joining device for internal cruciform structure has components which are made up of hollow-profiled members. For producing of at least one cross-piece from framework components, fitted over main hollow-profiled member at given angle are at least two lateral profiled members which are centered relative to each other and they embrace main profiled member with overlapping. To produce joining device, use is made of joining members for corresponding hollow profiled members, over which hollow profiled members are fitted. Main profiled member has mounting holes for pin. Holes are so dimensioned that there is basically no clearance in plane of crossing of framework components, but it goes with clearance across aforesaid plane. EFFECT: higher efficiency. 12 cl, 11 dwg
