@Cap4000 : Ref: ACI 530-05, Section 2.1.4.2.3 - Allowable Stress Design of masonry
The allowable load in shear primarily depends on the strength of masonry, edge distance of anchor from
top of the masonry, and area of anchor.
Assuming min. strength of masonry as 1500 psi and fy for steel as 36000 psi, I get the following values:
edge dist. from top of masonry ----- Allowable load in shear
10.5" ---------------------------------------------- 1917 lbs.
8" -------------------------------------------------- 1412 lbs
6" -------------------------------------------------- 1009 lbs
4" --------------------------------------------------- 605 lbs
3" -------------------------------------------------- 403 lbs
The minimum effective embedment length of the headed and bent-bar anchor bolt shall be 4 bolt diameters, but not less than 2".