Subcooled water thrust forces for use in pipe rupture analyses have been normalized with respect to an enthalpy normalization factor. This normalization is based on comparisons with thrust forces calculated using the Henry-Fauske model, and the answers are within ±3% in the range 300 to 2400 psia (21.1 to 168.7 kg /cm2). The numerical evaluation makes it unnecessary for the user to rely on figures for the particular conditions desired or to program the Henry-Fauske method.