Which construction type is typically limited to buildings of no more than four stories?

Type III construction is characterized by the use of masonry or fire-resistive materials for its exterior walls, while the interior can consist of lightweight wood materials. This construction type is commonly found in smaller commercial buildings and residential structures. One of the defining features of Type III buildings is that they are typically limited to no more than four stories. The design of Type III construction allows for effective compartmentalization, which can help with fire control, but the height limitation is crucial for maintaining structural integrity during a fire.

The other construction types have different characteristics and height limitations. Type I construction is known for its fire-resistance and can be much taller. Type IV, also termed heavy timber construction, is notable for its heavy wooden structural members but does not have the same height restrictions as Type III. Type V construction, which is often used for single-family homes, can also exceed four stories depending on the municipality's building codes, although it tends to utilize more combustible materials. Understanding the specifics of each construction type helps in assessing fire risks and strategies when it comes to firefighting and prevention.