Observation of Fire Spread and Blocking Effectiveness

What happens here

Once ignited, the fire on the balloon-framed side quickly travels up the open wall cavities (between the 'studs') to the 'second floor' and even to the 'ceiling rafters'. The smoke and flames visibly demonstrate the unimpeded vertical spread. In stark contrast, the platform-framed side of the model, which incorporates 'blocking' between floors, effectively contains the fire to the lower section. The presenter points out how fire blocking prevents the flames from easily making their way upstairs, emphasizing its crucial role in slowing fire spread and increasing occupant safety. This visual comparison highlights why fire blocking is super important in modern construction and why balloon framing is no longer commonly used.

Goal: Visually compare fire spread in balloon vs. platform framing.