New Sections Added in 2011 Ohio Building Code
Have you come across the new sections added to Chapter 15 - Roof Assemblies and Roof Top Structures in the newest version of the Ohio Building Code? There are quite a few, and some may be of interest to you. Here are some of the highlights:
Section 1503.4.1: This section provides requirements for determining when secondary roof drainage is to be required. (Previously, it was not decidedly clear.)
Section 1503.4.2: This section provides criteria for sizing and location for scuppers when scuppers are provided as secondary drainage. (Previously, you had to go to supplemental references, such as SMACNA to gain such information.)
Section 1507.2.7.1: This section provides requirements for asphalt shingles to be tested for wind resistance and labeled with the applicable classification. (I recommend that specifications address this section.)
Section 1507.12.3: This section provides installation requirements for ballasted thermoset low slope roofs.
Section 1507.13.3: This section provides installation requirements for ballasted thermoplastic low slope roofs.
Section 1507.16: For roof gardens and landscaped roofs, this section requires roof gardens and landscaped roofs to meet the requirements of Chapter 15 OBC and applicable portions of Chapter 16 (structural loads).
Section 1509.2.2: This section now clarifies that penthouses do not contribute to building area or the number of stories of a building. Furthermore, penthouses are not required to be included in the determination of a fire area.
Section 1509.2.4: This section provides for the use of fire-retardant treated wood for the construction of penthouse enclosures as long as it is consistent with what is allowed for the specific type of construction of the building.
by Jim Mitchell
Principal, Executive Vice President, Director - Civic/Community Studio
Jim has been with M+A since 1981 and currently serves as the executive vice president of the company. Jim's favorite place to eat is Polaris Grille, and his favorite movie is National Lampoon's Christmas Vacation.