A wall is framed with studs spaced 16 inches on center. A window rough opening requires cripple studs above the header. How should the cripple studs be spaced and aligned per standard framing practice?
- ACripple studs must align with and match the 16-inch on-center wall stud spacing, continuing up from the header to the top plate
- BCripple studs may be spaced randomly since they carry no load
- CCripple studs are only required if the header spans more than 8 feet
- DCripple studs should be doubled at every location regardless of wall stud spacing
Show answer & explanationAnswer & explanation
Correct answer: A. Cripple studs must align with and match the 16-inch on-center wall stud spacing, continuing up from the header to the top plate
Cripple studs above (and below) a window or door opening transfer roof, wall, and floor loads from the top plate down through the header, so they must align with and match the standard wall stud spacing (in this case, 16 inches on center) to maintain a consistent, continuous load path. Random spacing or omission would create unsupported plate spans and inconsistent load distribution.
Why the other options are wrong
- B. Cripple studs do carry load from the top plate to the header and must be properly spaced.
- C. Cripple studs are required at standard spacing regardless of header span length.
- D. Doubling is not required at every cripple location; standard spacing is sufficient.
Cripple Stud Spacing
Short studs located above or below a window/door opening that continue the standard wall stud spacing to maintain a continuous vertical load path.
- Must match the wall's standard on-center spacing (e.g., 16 inches)
- Transfer loads from top plate through header to jack/king studs
- Also used below window sills, spaced to match wall studs
Memory trick: 'Cripples keep the rhythm — same beat as the wall studs.'