1.1 The requirements given in this International Standard govern the application of algebraic equation sets to the calculation of specific characteristics of smoke layers generated by fires.1.2 This International Standard is an implementation of the general requirements provided inISO/TR 13387-3 for the case of fire dynamics calculations involving sets of algebraic equations.1.3 This International Standard is arranged in the form of a template, where specific information relevant to algebraic smoke layer equations is provided to satisfy the following types of general requirements:a) description of physical phenomena addressed by the calculation method;b) do