An assembly of fittings, pipe, flexible pipe, and/or couplings that permits movement in all directions to accommodate seismic differential movement across building seismic separation joints.
# Definition An assembly of fittings, pipe, flexible pipe, and/or couplings that permits movement in all directions to accommodate seismic differential movement across building seismic separation joints. Seismic separation assemblies include traditional assemblies as shown in Figure (1) and seismic loops as shown in Figure (2). Seismic separation assembly according to NFPA 13 -2019 edition Figure (1) Seismic separation assembly according to NFPA 13 -2019 edition Figure (2) The extent of permitted movement should be sufficient to accommodate calculated differential motions during earthquakes. In lieu of calculations, permitted movement can be made at least twice the actual separations, at right angles to the separation as well as parallel to it. # General_requirements An approved seismic separation assembly shall be installed where sprinkler piping, regardless of size, crosses building seismic separation joints at ground level and above. Seismic separation assemblie...