__________construction is the least stable of all construction in terms of susceptibility to collapse. P143
Noncombustible
Non-combustible construction is the least stable of all construction types in terms of susceptibility to collapse. This is primarily because _______is a principle, construction material, supporting the roof, as well as the roof itself. P143
unprotected steel
Steel is a poor performer in fire. Especially in_______, unprotected, steel lentils will often span the area above show windows and support freestanding parapet walls. P143
strip malls