In alphabetical order, all important terms related to building fire protection and explosion protection are explained. The lexicon covers the interface between construction and fire protection as well as between explosion protection and operational safety. This promotes mutual understanding among stakeholders, particularly in the building permit process and in fulfilling operational safety regulations. Extensive fire protection and safety-related key figures have been compiled in many tables and are presented in a user-friendly manner for practical use. The tables provide practitioners with, for example, data for fire load calculations in the building permit process, as well as for the creation of explosion protection documents. The book is an important reference work for all those involved in fire and explosion protection and its related fields.