6502 EVERGREEN WAY ENHANCED SERVICE FACILITIES 2020-01-21

6. There is a one-hour wall notation on Sheet A005 on the ground floor surrounding the stairs and elevator area. If this is the one-hour occupancy separation between the S-2 and I-1 occupancy above than door 024B and adjacent sidelite should be shown as minimum 45-minute rated assemblies. More simply, the stairway enclosure itself (on the lower floor) could be the occupancy separation — the diagram on sheet A005 would just need to be revised. 7. One-hour, fire-resistive roof/ceiling assembly detail R1/A601 depicts TJI's however the project uses trusses and 2x12's. Fire-resistive assemblies using wood-trusses and 2x12's should be provided. Section 703.2 8. The roof/ceiling assembly over the exterior deck (room 117) and western patio should be shown as minimum one-hour fire-resistive construction as those useable areas under the projected roof constitute building area. Section 602.1 9. The following comments apply to the shafts on the second floor: a. Fire dampers should be provided at the duct penetrations of the concrete floor (Section 1717.6.1), or i. The shafts should be shown as minimum one-hour fire resistive construction to maintain the one-hour occupancy separation between the occupancies on each floor (Sections 508.4.4 and 717.6) and, ii. The shafts should be shown to continue to the underside of the roof sheathing (Section 707.5). 10.The following comments apply to air ducts penetrating the fire-resistive ceiling membrane of the second floor roof/ceiling assembly in accordance with Section 717.6.2: a. Air ducts that penetrate the ceiling should be shown with ceiling radiation dampers. b. Exhaust ducts serving the dryers within the laundry room will be required to be within a rated shaft through the attic. The shaft construction should be detailed on the plans. c. Any duct serving the kitchen hood (residential, type II or type I) should be provided with a shaft. 11.The upstairs kitchen has a commercial cooking appliance shown (American Range AR12G-6B). The manufacturer's specification indicates this equipment is a Heavy Duty Restaurant Range. IMC Section 507.2 requires a Type I hood for this application. Clearance to combustibles is also required by Section 507.2.6 which may necessitate the revision of wood framing to non-combustible framing. a. Note: we have correspondence forwarded from DOH that there is a state amendment to the IMC regarding this. The amendment and section were not provided. Assuming this is the amendment to Section 507.2 Exception 2 we will need further verification that there is a state interpretation affirming that an I-1 Condition 2 Occupancy is a 'R-2 type Occupancy' in this instance. 12.The proposed dishwashers (Fagor CO-502W) are high-temperature, commercial dishwashers. Type II hoods are required per Section 507.3 Egress 7 CITY OF EVERETT • 3200 Cedar Street • Everett, WA 98201 • (425) 257-8813 • Page 2