Sill crushing

Structure · Columns · printed page 46 (PDF page 47)

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Book index entries

Crushing Sill – Crushing – Wall Sill – Wall

Text in the illustration

floor joist
sill
foundation wall
look for crushing of the sills at the ends of the joists
this is more likely to be a problem where the sills are near grade level (rot problems) and/or where the joists have too little end bearing (concentrated load)
perspective view (joist shown semi-transparent for better visibility)

Generated explanation

The perspective drawing shows wood floor joists bearing on a wood sill atop a concrete foundation wall. One joist is shown semi-transparent to expose its bearing contact with the sill. A circled area and leader identify sill crushing beneath the joist end as an inspection concern. The annotation explains that crushing is more likely where sills are near grade and susceptible to rot, or where insufficient joist end bearing concentrates the load.