THE BASICS · DAY 005 / LESSON 1
Girts: the plain-English version
Girts support wall panels; purlins support roof panels. [1]
Star's secondary-framing page distinguishes these members by the surfaces they support.
Worked calculation
On a wall sketch with girt elevations at 4 ft and 8 ft, the vertical difference is 4 ft. Those elevations are illustrative, not a spacing recommendation.
Start by separating the definition from the dimensions or requirements on a specific project. The reference below provides a concrete fact, its limits, and a practical example.
Sources & scope
- Star Building Systems — Secondary Framing ↗
Girts, purlins, and eave struts.
Source content checked October 14, 2026. Worked examples use stated assumptions; they are not project designs, prices, or site-specific requirements. Code editions and manufacturer specifications are identified so their limits are clear.
View the complete source library →The day is part of the BeamWerx learning curriculum; it is not a publication date.