8830 3RD AVE SE 2016-01-01 MF Import

( c Plan Check No. B 59552 ALgust 27, 1998 Page 2 of 5 � Detai14/WS-1 shows '�4" GWB as the protection for rypical bParing walls. All walls require a one-hour rating unless they are interior non-load bearing partitions within individual dwelling units. Section 601.5.2.2 i. The wall type for the stair enclosures should be called out on the plans. Section 606.4 6. The following comments apply to the stair enclosures detailed on sheet SD-2: �.�'The landings are portions of one-hour floor/ceiling assemblies. The complete fire protection should be shown. f,�/The enclosures should be sbown to tcrminate at a one-hour rated roof-ceiling assembly � with the ceifing members and beams pro[ected. c� Note that many of the details/notes shown on SD-2 were designed under previous editions � of the code, and for a non-rated building. All details included on the plans should be for this current project, or be removed. ;=7� It should be noted and detailed on the plans that penetration of walls should be protected for through penetration and membrane peretration protection. Section 709.6 & 709.7 �8�The method of protection for the fire-resistive assemblies should be detailed on the plans for the moisture. kitchen and dryer exhaust ducts per Section 713.11: a. Ceiling fire dampers are required when ducts penetrate the ceiling membrane of rated floor-ceiling assemblies. b. The kitchen stove exhaust fan is not permitted to be equipped with a fire damper per the UMC. c. The moisture air duct from the dryer is not permitted to exhaust inro rared stair enclosures per Section 1005.3.3.5. d. A dropped soffit below the fire-resistive ceiling membrane may be used to avoid fire dampers. e. Duct penetrations by steel exhaust air subducts extending vertically upward at least 22" above the top of the opening in a vented shaft (rated) with upward air flow may also be used with no fire dampers required per Exception 1 to Item 3. a�