Subsection 305.2.1 of the International Swimming Pool and Spa Code is hereby amended to read as follows:

305.2.1 Barrier heights and clearances. Barrier heights and clearances shall be in accordance with all of the following:

1. Every semi-public or public swimming pool built shall be surrounded by a fence at least six (6) feet height. The type of fence material and the location of the fence shall be approved by the Building Official.

2. The top of the barrier for pools constructed on lots of buildings governed by the International Residential Code shall be not less than forty-eight (48) inches above grade. All other barriers shall be not less than seventy-two (72) inches above grade where measured on the side of the barrier that faces away from the pool or spa. Such height shall exist around the entire perimeter of the barrier and for a distance of thirty-six (36) inches measured horizontally from the outside of the required barrier.

3. The vertical clearance between grade and the bottom of the barrier shall not exceed two (2) inches for grade surfaces that are not solid, such as grass or gravel, where measured on the side of the barrier that faces away from the pool or spa.

4. The vertical clearance between a surface below the barrier to a solid surface, such as concrete, and the bottom of the required barrier shall not exceed four (4) inches where measured on the side of the required barrier that faces away from the pool or spa.

5. Where the top of the pool or spa structure is above grade, the barrier shall be installed on grade or shall be mounted on top of the pool or spa structure. Where the barrier is mounted on the top of the pool or spa, the vertical clearance between the top of the pool or spa and the bottom of the barrier shall not exceed four (4) inches.