The e-memo issued earlier this week had information on an amendment effective January 2, 2015. You may find it at Radon Control in Residential Buildings
B. Floor fire protection:
An amendment to the Residential Code for floor fire protection went into effect on July 1, 2014. This amendment applies for permit applications received on or after July 1 but does not apply retroactively for permit applications received on or before June 30, 2014. The MA amendment is copied below:
R501.3 Fire protection of floors. Floor assemblies not using dimension lumber or structural composite lumber equal to or greater than 2-inch nominal dimension, shall be provided with a ½ inch gypsum wallboard membrane, 5/8 inch wood structural panel membrane, or equivalent on the underside of the floor framing member unless required elsewhere in this code to be fire resistance rated.
- Other approved floor assemblies demonstrating equivalent fire performance.
- Floor assemblies located directly over a space protected by an automatic sprinkler system in accordance with Section P2904, NFPA13D, or other approved equivalent sprinkler system.
- Floor assemblies located directly over a crawl space not intended for storage or fuel-fired appliances.
- One room or alcove per story not exceeding 80 square feet, when supported between structural walls.
To provide direction on Exception 1 an Official Interpretation was issued. In addition, the BBRS has required that submissions forequivalent fire performance be considered only if actual fire test data are submitted and reviewed by the BBRS. At this point in time only two I-Joist manufacturers, Weyerhaeuser and Boise Cascade have received approvals via Exception 1. More specifically:
- I-Joists produced by Boise Cascade only and installed in accordance with ICC-Evaluation Service Report ESR-1144 or ESR-1136 meet the floor fire protection requirements of R501.3 Exception 1: “Other approved floor assemblies demonstrating equivalent fire performance”. The building official at time of permit application should receive plans that indicate AJS or BCI Joists with the specified fire protection system’s figure number from the respective evaluation report.
- I-Joists produced by Weyerhaeuser with Flak Jacket Protection meet the floor fire protection requirements of R501.3 Exception 1: “Other approved floor assemblies demonstrating equivalent fire performance”. The building official at time of permit application should receive plans that indicate TJI Joists with Flak Jacket Protection.
Please note that the APA System Report SR-405 has not been approved by the BBRS. And until further notice and review by the BBRS no I-Joists produced by other manufacturers meet the BBRS requirement of R501.3 Exception 1: “Other approved floor assemblies demonstrating equivalent fire performance”. BBRS is working with technical experts and manufacturers on this issue and will provide more information when it becomes available.