Trimmer (construction)

In light-frame construction, a trimmer is a timber or metal beam (joist) used to create an opening around a stairwell, skylight, chimney, and the like. Trimmers are installed parallel to the primary floor or ceiling joists and support headers, which run perpendicular to the primary joists.[1][2] It can also refer to a jack stud that supports a header above a window or door opening.

Traditionally, a stud which was less than full length was sometimes referred to as a cripple.[3][4][5]

## References

1. ↑ "Architectural Graphic Standards Online". https://www.graphicstandards.com/gs/landing.html#searchQuery?searchQueryString=trimmer.
2. ↑ Ching, Francis D. K. (2001). Building Construction Illustrated, 3rd Edition. John Wiley & Sons, Inc.. pp. 4.21, 4.31. ISBN 0-471-35898-3. https://archive.org/details/isbn_9780471358985/page/4.
3. ↑ Glossary, building terms, word definitions. Define Cripple Stud
4. ↑ Hometime Glossary – Framing
5. ↑ Building a Wall 3 - Three Stud Corner and Windows | DoItYourself.com

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