garage extension footer question

[zchrisz]

i currently have a 13.5 x 19 single detached garage with gable roof, 2x4 studs with 4x4 corners, the footing consist of 10" tall concrete footing with a row of concrete block for a total of 18" below grade then a row of block above grade.

for the addition 13.5 x 8 could i use a monolithic foundation with the same depth as the existing footer?

 

[K'ledgeBldr]

Check with your local Authority having Jurisdiction (AHJ) to see what would be approved. Most AHJ's have that information readily available; along with a list of common building requirements that they will want for inspections.

 

[zchrisz]

yeah i spoke with them they said i can copy the 18" deep footing, would be easier to pour the monolithic all at once and tie it to the existing.