There are several things to consider not readily covered in NFPA 13D and 13R: water supply, backflow prevention, alarms/accessories and fire department connections.
Around the globe, scientists are discovering our water supply may seem abundant, but our drinkable water supply is in high demand and short supply. That is why the plumbing industry has dedicated considerable efforts to protecting what drinkable water we have through devices and technologies that have evolved over the last century.
Providing equipment selection and pipe sizes that deliver adequate water flow to plumbing fixtures and equipment in tall buildings is an important design task of the plumbing design professional.