Consider adding in the database the equivalent length data presented in Table 28.2.3.1.1 of NFPA 13 2022 Edition.

Also, include automatic correction when a different pipe schedule (except sch 40) and Hazen Williams coefficient (120) is applied. Correction methods are described in Items 28.2.3.1.3.1 and Table 28.2.3.2.1.