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ABSTRACTS AND REVIEWS 297 chusetts Mumcipal, federal and private data are merged, permittmg analysis of factors influencing alarm rates such as time, construction class, occupancy, and socio-economic and demographic forces. Some 29,000 alarm records for five years and 13,000 individual structural data from the primary data base. Data collection strategies, processing approaches and verification procedures are discussed. Results from prelimmary analyses suggest the power of the information system Statistical analyses are possible on both an individual structure or areal bases. Computer mapping display programs detect patterns m contiguous areas The direction of future work is discussed. Lee, B. T. (Stanford Research Institute, Menlo Park, California) "Modeling the Dynamic Behavior of Building Fues," Final Report, August 1970-August 1971, under Cmtract No. DAHC20-70-C-0219 for Office of Civil Defense (August 1971) Section: L Subjects: Modeling fire behavior; Scaling methods Author's Abstract The practical modeling of fire behavior in a burning building requires separate techmques for simulation of the convective and radiative fields about the fire. Previously derived scalmg methods for modehng the fluid flow environment m mass fires appear applicable to 1/16 scale structural fires. The time duration of a fire can be scaled as the square root of a characteristic dimension of the burning structure upon satisfaction of geometric similarity with the model to which i t is being compared The perturbation of the flow, e g , the smoke colunm, by the ambient wind is shown to depend on wmd velocitj, burning rate, and fire size. If the material thickness in a model is mcreased to about the thickness of com- bustible sheathing in full size buildmgs, the resulting model will exhibit the radi- ative characteristics of large fires at the low viewing angles pertment to evaluation of building to building fire spread. Although study of ambient wmd enhancement of fuel consumption rate and room to room fire spread appear to require altogether different modehng techmques, the above model for radiative simulation has poten- tial in these two areas as well.
