Glazing systems must accommodate thermal and structural movement, and a facade subcontractor that does not read the movement and deflection requirements underprices the engineering.
What movement requirements set
Glazing and curtain wall systems must accommodate thermal expansion, building drift, and slab deflection without failure, and the Division 08 specifications set the movement, the deflection limits, and the anchorage the system must handle. These requirements drive the framing, the joints, and the anchor design the facade sub must engineer.
Why movement scope is easy to miss
The thermal movement, the structural drift, and the deflection limits sit in the Division 08 specifications and the structural criteria, not the title. A sub that overlooks the movement requirements underprices the engineering and the anchor scope.
How an AI bid agent flags movement requirements
An AI bid agent reads each glazing package, flags the thermal and structural movement requirements, and surfaces the deflection limits and the anchorage that drive the engineering. The facade sub prices the actual scope.
You can see how the agent reads a glazing package in our AI bid agent demo for specialty trade contractors. It flags the thermal and structural movement requirements so the engineering and anchorage are priced.