So the framer must love his power nailer because for a 10d 2" o.c. CDX plywood shear wall, he did 1.5"-2" o.c., two rows staggered on the double 2x4 chords and perimeter. The result is for many nails (in adjacent 2x4's) to be approx. 1/2"-1" apart, measured diagonally. The building department...