1. This standard will be applied to the calculation of constructions in which the cement concrete and laminated steel, closely linked, are arranged in such a way that their joint action is necessary to resist the stresses. 2. Reinforced concrete constructions that must meet special conditions will be governed by the applicable complementary provisions (for example, concrete with prestressed reinforcement, prefabricated parts, etc.). 3. This standard will not apply to the calculation of reinforced concrete elements with simple or composite metal profiles.