Modular buildings have proven to be structurally superior to their stick-built counterparts. Modular structures can survive some of the most inclement weather, including hurricanes, tornadoes, tropical storms, etc. Here is an excerpt from the FEMA Building Performance Report based on observations during and after Hurricane Andrew.
Wood-Frame Modular Buildings
Overall, relatively minimal structural damage was noted in modular housing developments. The module-to-module combination of the units appears to have provided an inherently rigid system that performed much better than conventional residential framing. This was evident in both the transverse and longitudinal directions of the modular buildings.
…Connection of units provides inherent reinforcement to overall construction with doubled members.
…Short span of rafters contributes to increased overall structural stiffness.
…Structural integrity of individual units (necessary to resist lifting and transportation forces) ensures sound components for systems of connected units.
Figure 20 of the Report is a diagram showing the “[i]nherent structural strength of modular construction.”
View full excerpt here: FEMA – Hurricane Andrew Building Performance (modular extract)