This lecture covers the design considerations for fire safety in buildings, focusing on structural elements, fire resistance, and the impact of ventilation on fire development. The instructor discusses the calculation of fire loads, the importance of building materials, and the use of active fire protection measures. Through a detailed example, the lecture demonstrates the effects of different design choices on fire behavior and structural integrity, emphasizing the critical role of ventilation in fire control. Students are tasked with a practical exercise involving the design of fire protection measures for a specific building scenario, considering structural elements, fire loads, and material properties.