B. Eaves and awnings may encroach three feet into required yards; all other architectural projections may encroach 18 inches into required yards.
C. The following general exceptions are allowed for structures that are 30 inches in height or less, including entry stairs, uncovered porches, patios, and similar structures:
1. The structures are exempt from the side and rear yard setback requirements.
2. The front and side yards abutting a public street may be reduced by half.