To accelerate production for monolithic construction, it is more appropriate to use prefabricated reinforced concrete structures for certain load-bearing elements. Prefabricated balcony slabs with rebarcan be offered as an alternative to monolithic balconies. This type of balcony speeds up the process of monolithic construction, reduces the cost of shuttering work, and is a quality certified load-bearing element. Strength, stiffness and cracking resistance must be tested according to domestic regulatory documents when introducing prefabricated elements into mass production. The results of these tests allow us todraw conclusions on the serviceability of the structure and make adjustments for modernization.