Most model Building Codes address fire spread due to radiant heat ignition of adjacent building facades by specifying a minimum set back from the property line determined using a piloted ignition heat flux similar to that of:
Most model Building Codes address fire spread due to radiant heat ignition of adjacent building facades by specifying a minimum set back from the property line determined using a piloted ignition heat flux similar to that of:
Model building codes typically consider the risk of fire spread from one building to another by taking into account how different exterior materials respond to radiant heat. The minimum setback from the property line is often determined using a piloted ignition heat flux similar to that of exterior wood cladding, as wood is a commonly used combustible material and has standardized flammability properties. Therefore, using the heat flux characteristics of exterior wood cladding provides a conservative and practical basis for ensuring fire safety between buildings.
ANS: A. FPH 2-69
Model building codes address the problem of fire spread from one building to an adjacent building due to radiant ignition of combustible exterior facades by specifying a minimum distance to the property line. This distance is based on the assumption that the exterior cladding is wood.