We have an odd size cell and wanted to know the max bar size we could use in that cell? The cell is 5" long and 2 1/2" wide.
This is the info from the code on the size of reinforcing you can have in a cell (from current 2016 TMS 402). Looks like the max bar for Allowable Strength design for a 5" x 2 1/2" cell is a #7 and the Max bar for Strength Design is a #5. Allowable design is currently the predominate design procedure in Florida. A #7 bar is the largest bar that I personally recommend for 8” masonry.
For walls designed with Allowable Stress Design (denotes vertical steel)
For walls designed with Strength Design (does not denote vertical steel – thus would apply to vert or horz)
Jerry Painter, FASTM
Don Beers, PE, GC