Read the Meeting Stile: What the Top, Middle and Bottom Are Telling You

Read the Meeting Stile: What the Top, Middle and Bottom Are Telling You Related diagnostic: Double Fire Doors: How to Find the Leaf That Should Arrive First explores the connected fault pattern and helps compare the evidence before choosing a repair. The meeting stile provides a built-in comparison between two leaves. The top, middle and bottom relationship can show whether the geometry is progressive, local or concentrated at one point. What the pattern is telling you Read the pattern rather than one measurement. A progressive opening differs from a tight-open-tight pattern, and a middle-only opening can indicate a different leaf condition. For gap faults I would measure the same points repeatedly, usually top, middle and bottom, then compare both sides of the opening. An unaltered leaf is treated as a rigid rectangular reference in the Proudman diagnostic model, while the…