Standpipe Classes I, II, and III per NFPA 14, wet vs. dry standpipes, hose connection sizing and pressure requirements, and how standpipe zoning solves the pressure conflict tall buildings create.
A standpipe system gives fire crews an immediate, pressurized hose connection on any floor instead of forcing them to hand-lay hose up a stairwell from street level — a capability automatic sprinklers don't provide and that becomes essential the moment a building grows past a few stories. This module works through NFPA 14's three standpipe classes, the wet-vs-dry distinction and why each is used where it is, hose connection sizing and the minimum-and-maximum pressure requirements every connection has to satisfy at once, and the zoning scheme that resolves those two pressure requirements in a high-rise.
By the end of this module you should be able to explain why a single standpipe riser physically cannot serve an unlimited building height without violating either its minimum or maximum pressure requirement — the exact problem standpipe zoning exists to solve, and one this module connects directly to the fire pump sizing covered in Module 7.