High strength composite cables with large specific strength and made of base of materials using carbon fiber reinforced plastics (CFRP), glass fiber reinforced plastics (GFRP) and Vectran, are widely used in constructional industry. However, the use of a steel component enables the small elongation of the cable to be moderately increased, the brittleness decreased and the scope of application of high strength composite cables expanded respectively. Cable made of steel in combination with other materials such as CFRP, GFRP and Vec-tran, was studied and reported in this paper. Volumetric fraction of steel was within the limits of 0.1 to 0.7. The inter-dependent relationship of external pressure per unit surface area of the distributed layer (due to the pressure of steel wire strands) of hybrid composite cable on the axial force and angle of steel wire strands twisting was es-timated by engineering method of calculations. Tangential and radial stresses of the distributed layer and core of hybrid composite cable were obtained. It was shown that the angle of steel wire strands twisting should not ex-ceed 20º in the case when the distributed layer and core are made of GFRP and CFRP respectively. Relationship between materials and their content in hybrid composite cables with the steel component was considered. Hybrid composite cables with the steel component were considered as materials of several groups of cables in a prestressed saddle-shaped cable roof. Opportunity to decrease the displacements of composite saddle-shaped ca-ble roof by the use of hybrid composite cables with steel component in several groups of cables was investigated and reported.