SYSTEMS/METAL BUILDINGS
Selected Design Details
The intersections between envelope components are the most critical locations for maintaining the
continuity of the air barrier and insulation systems in metal building systems. Figure 4.6.4 shows a
generic wall/roof connection in which the structural steel girder acts as a severe thermal bridge
(Steven Winter Associates). In the alternative design, both the wall and roof employ insulated
panels outside of the steel structure. The intersection between the wall and roof panels still
requires special attention to maintain the continuity of the air barrier system and to avoid thermal
bridging as covered in the section on Roofing Systems.
UNACCEPTABLE
ACCEPTABLE
Figure 4.6.4 Wall / Roof Connections (Steven Winter Associates)
PAGE 4.6-4
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