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<br /> � BU�LDING 40-58 ALTERNATE MEANS AND METHODS NARRATIVE
<br />� BUILDING 40-58, DUE TO ITS EXPANSIVE SCALE, IS SUCH A BUILDING WHERE THE CODE 6. IBCWA§1016: EXITACCESS TRAVEL DISTANCES
<br /> REQUIREMENTS ARE NOT WELL DEFINED. THE SPECIAL CONDITIONS PRESENT IN THE BOEING
<br /> BUILDING 40-58 REQUIRE APPLICATION OF ALTERNATE MEANS AND METHODS TO PROVIDE THE THE MAXIMUM PERMISSIBLE TRAVEL DISTANCE FOR A BUSINESS OCCUPANCY IS 300 FT. THE CODE
<br /> LEVEL OF PROTECTION INTENDED BY IBCWA USING FEASIBLE SYSTEMS AND CONSTRUCTION REQUIRES THIS TRAVEL DISTANCE TO TERMINATE AT AN EXlT.AT MEZZANINE LEVELS TWO AND �
<br /> MATERIALS. THIS NARRATiVE SUMMARIZES THE CHOICES THE DESIGN TEAM HAS MADE IN THREE, THE EXIT STAIR AT THE EAST END (STAIR K2) IS AN EXIT.AL�OTHER ENCLOSED STAIRS ARE
<br /> CONJUNCTION W ITH THE AUTHORITIES HAVING JURISDICTION TO COMPLY WITH THE INTENT EXIT ACCESS. THE TRAVEL DISTANCES FROM THE MEZZANINE LEVEL THAT USE AN EXIT ACCESS
<br /> AND LEVEL OF PROTECTION REQUIRED BY IBCWA. STAIR ARE REQUIRED TO INCLUDE THE TRAVEL DOWN THE STAIR AND ACROSS THE GROUND LEVEL
<br /> TO THE EXTERIOR EXIT DOOR. THESE TRAVEL.DISTANCES ARE IN EXCESS OF THE MAXIMUM
<br /> AUTHORITY TO DEVIATE FROM THE LETTER OF THE CODE IS GRANTED BY§104.11 ALTERNATE PERMISSIBLE PER PRESCRIPTIVE CODE.TO ADDRESS THIS DEVIATION FROM PRESCRIPTIVE VALUES,
<br /> MATERtALS, DESIGN AND METHODS OF CONSTRUCTlON AND EQUIPMENT. EVACUATION MODELING USING BUILDINGEXODUS SOFTWARE WAS PERFORMED AND IS PROVIDED AS
<br /> A PART OF THE ALTERNATE MEANS OF COMPLIANCE. THE RESULTING ANALYSIS DEMONSTRATED,
<br /> BELOW IS THE SUMMARY OF THE PROJECT-BASED CIRCUMSTANCES IN WHICH THE DESIGN EVEN USING WORST-CASE TRAVEL PATHS, DELAY TIMES, EGRESS DISTANCES AND OTHER SIMILARLY
<br /> � TEAM HAS APPLIED THE ALTERNATE METHOD AND MATERIAL CONSISTING OF PERFORMANCE- CONSERVATIVE PARAMETERS,THE BUILDING EGRESS DOORS ILLUSTRATED IN THE DESIGN
<br /> � BASED DESIGN METHOD TO ACHIEVE THE LEVEL OF PROTECTION INTENDED BY THE IBCWA. DOCUMENTS WILL PERMIT EVACUATION OF THE ENTIRE BUILDING IN LESS THAN THE 15 MINUTES
<br /> DEMONSTRATED BY SEPARATE FIRE/SMOKE MODELING FOR MAINTAINING TENABILITY AT THE
<br /> 1. IBCWA§503.1: BUILDING HEIGHT AND AREA UPPERMOST CATWALK LEVELS. PLEASE REFER TO HUGHES ASSOCIATES, INC. "EVACUATION
<br /> 2. IBCWA§910: PROVISION OF SMOKE & HEAT VENTS AND DRAFT CURTAINS MODELING OF BOEING BUILDtNG 4058 USING BUILDINGEXODUS SOFTWARE," DATED OCTOBER 8,
<br /> 3. IBCWA§1004.1: OCCUPANT LOAD FACTOR—FACTORY FLOOR 2014. •
<br /> 4. IBCWA§1004,1: CAFETERIA USAGE AND OCCUPANT LOAD FACTOR
<br /> 5. IBCWA§1005.1: GENERAL EGRESS CAPACITY THE BUILDING IS PROVIDED WITH A FIRE ALARM SYSTEM THROUGHOUT. THE LARGE FACTORY AREAS
<br /> 6. IBCWA§1016: EXIT ACCESS TRAVEL DISTANCES ARE CLASSIFIED AS AN F-1 OCCUPANCY AND PER CODE WOULD NOT REQUIRE A FIRE ALARM SYSTEM
<br /> IF ALL OTHER CODE REQUIREMENTS WERE MET. HOWEVER, SINCE THE TOWER OCCUPANTS MUST
<br /> 1. IBCWA§503.1: BUILDING HEIGHT AND AREA TRAVERSE THE FACTORY FLOOR TO REACH THEIR EXITS,AND SINCE THE TRAVEL DISTANCES ARE IN
<br /> EXCESS OF THAT REQUIRED BY THE BUILDING CODE, THE CITY HAS REQUIRED THAT THESES AREAS
<br /> THE BUILDING OCCUPANCY IS CLASSIFIED AS SPECIAL INDUSTRIAL IN ACCORDANCE WITH IBC BE EQUIPPED WITH DETECTION AND NOTIFICATION.
<br /> 503.1.1. THIS WAS ADDRESSED BY MR. TONY LEE, BUILDING OFFICIAL FOR CITY OF EVERETT IN
<br /> LETTER DATED JULY 30, 2014. THE CLASSIFICATION OF SPECIAL INDUSTRIAL OCCUPANCY FACTORY FLOOR AREAS ARE TO BE PROVIDED WITH VIDEO SMOKE DETECTION. ALARM FOR THE
<br /> PERMITS THE BUILDING TO BE EXEMPT FROM THE £UILDING HEIGHT AND AREA LIMITATIONS OF FACTORY AREAS W ILL BE PROVIDED BY HIGH-INTENSITY STROBES AND AUDIBLE APPLIANCES.
<br /> IBC TABLE 503. THE BUILDING WILL BE CONSTRUCTED AS TYPE IIB CONSTRUCTION TYPE AS
<br /> DEFINED BY SECTION 602.2. ADDITIONALLY, THE MEZZANINE LEVELS ARE REQUIRED TO BE PROTECTED WITH DETECTION AND
<br /> NOTIFICATION TO ALERT AND DIRECT THE TOWER OCCUPANTS. THE NOTIFICATION PROVIDED IN THE
<br /> 2. IBCWA§910: PROVISION OF SMOKE & HEAT VENTS AND DRAFT CURTAINS MEZZANINE LEVELS AND LEAN-TO SPACES IS BY BOTH VISUAL APPLIANCES AND VOICE .
<br /> ANNOUNCEMENTS. THE EXIT ACCESS STAIRS FROM THE MEZZANINE LEVELS WILL BE PROVIDED WITM
<br /> A COMPUTATIONAL FLUID DYNAMICS MODEL WAS CONSTRUCTED IN WHICH A SERIES OF ACTIVE SIGNAGE AT THE GROUND LEVEL.THESE SIGNS WILL DIRECT OCCUPANTS TO EXIT FROM THE
<br /> SIMULATIONS WERE PERFORMED TO DETERMINE THE BEHAVIOR OF SMOKE WITHIN THE ENCLOSURE AT THE BASE OF THE STAIR INTO EITHER THE NORTH OR SOUTH HIGH-BAY PORTION OF
<br /> BUILDING AND TO ASSESS ITS ABILITY TO IMPACT EGRESS. THE RESULTS INDICATED THAT THE THE BUILDING (THAT AREA OF THE BUILDING WHERE THE INCIDENT HAS NOT BEEN REPORTED).
<br /> - IMMENSE VOLUME OF EACH HALF OF THE BUILDING WAS SUFFICIENT TO SEQUESTER SMOKE ALTHOUGH NOT REQUtRED BY THE PRESCRIPTIVE CODE DUE TO THEIR CLASSIFICATION AS A
<br /> FOR THE DURATION NECESSARY TO EFFECT A SUCCESSFUL EVACUATION OF THE BUILDING. MEZZANINE, PER AGREEMENT WITH TME GTY OF EVERETT, THE STAIRS SERVING THE ELEVATED
<br /> FURTHERMORE, CONSIDERING THE CHARACTERISTIC OF THE WALL BETWEEN THE TOWER TOWER LEVELS HAVE BEEN ENCLOSED IN 1-HOUR FIRE RESISTANT CONSTRUCTION TO PROVIDE AN
<br /> AND CCA OF BEING IMPERMEABLE TO SMOKE (I.E., TREATING IT AKIN TO A SMOKE PARTITION), ENHANCED LEVEL OF SAFETY FOR THE TOWER OCCUPANTS.
<br /> EITHER SIDE CAN FULLY ACCOMMODATE THE FULL QUANTITY OF SMOKE WITMOUT CREDITING
<br /> OR RELYING UPON LEAKAGE TO THE OTHER.ALSO RELEVANT TO THIS TOPIC IS THE ABSENCE THESE ITEMS At�E�ROVIDED TO COMPENSATE FOR THE PRESCRIPTIVE CODE REQUIREMENTS THAT
<br /> OF ANY MANNED GRANES OVERHEAD WHICH WOULD BE MORE SUSCEPTIBLE TO SMOKE ARE NOT MET AND TO PROVIDE AN EQUIVALENT OR INCREASED LEVEL OF SAFETY FOR THE
<br /> � OWING TO THEIR HIGH ELEVATION AND POSSIBLY LONG TRAVEL DISTANCE T�AN EXIT DURING OCCUPANTS.
<br /> A FIRE EMERGENCY.
<br /> ALTHOUGH THE STRUCTURE OF THE BUILDING ITSELF IS CAPABLE OF CONTAINING THE SMOKE '
<br /> FROM THE DESIGN FIRE, MEANS ARE PROVIDED TO VENT SMOKE AFTER A FIRE EVENT. THERE
<br /> ARE 10 BUILDING VENTILATION FANS THAT ARE DUCTED AND CONFIGURED SUCH THAT THEY
<br /> CAN ALSO EXHAUST THE CCA OR THE POST CURE FORA TOTAL EXHAUST CAPACITY OF 600,000
<br /> CFM [283 M3/S]. TO EXHAUST THE ENTIRE VOLUME OF CCA OR POST CURE, IT WILL TAKE 102
<br /> MWUTES AND 92 MWUTES, RESPECTIVELY.
<br /> MANUAL CONTROLS TO INITIATE THIS EXHAUST WILL BE AVAILABLE FOR FIRE DEPARTMENT
<br /> USE AND WILL BE LOCATED NEXT TO THE FIRE ALARM CONTROL PANELS IN THE LEAN-TO
<br /> STRUCTURES ON THE NORTH AND SOUTH FACES OF THE BUILDING,ADJACENT TO EMPLOYEE
<br /> BREAK ROOMS. THESE AREAS ARE ACCESSIBLE TO FIREFIGHTERS DIRECTLY FROM THE
<br /> BUILDING PERIMETER.
<br /> PLEASE REFER TO THE STUDY DESIGN STUDY FOR SMOKE MANAGEMENT AT BOEING BUILDING
<br /> 40-58, EVERET7; WASHINGTON, INCLUDED WITH THE DESIGN DOCUMENTS FOR DETAILS
<br /> 3. IBCWA§1004.1: OCCUPANT LOAD FACTOR- FACTORY FLOOR
<br /> THE OCCUPANT LOAD FACTOR FOR THE FACTORY FLOOR HAS BEEN DEFINED AS ONE PERSON
<br /> PER 300 SQUARE FEET AS ACCEPTED IN THE LETTER DATED JULY 30, 2014 FROM TONY LEE,
<br /> BUILDING OFFICIAL OF THE CITY OF EVERETT, TO GREGG KIRKENDALL AT BRPH.
<br /> THIS FACTOR INCLUDES CONSIDERATION OF THE FACT THAT THE FACILITY IS ENGAGED IN THE
<br /> FABRICATION OF LARGE AIRPLANE WINGS THAT EACH OCCUPY A LARGE PORTION OF THE
<br /> FLOOR; THIS SPACE IS UNAVAILABLE FOR OCCUPANCY BY WORKERS.
<br /> 4. IBCWA§1004.1: CAFETERIA USAGE AND OCCUPANT LOAD FACTOR
<br /> THE THIRD LEVEL MEZZANINE IS PLANNED T� HAVE A CAFETERIA PROVIDED AS A PART OF THE
<br /> BUILD-OUT. THE PRESCRIPTIVE OCCUPANT LOAD OF ONE PERSON PER 15 SQUARE FEET ,
<br /> (GROSS)WILL BE ATTRIBUTED TO THIS SPACE. PER BRPH, THIS CAFETERIA WILL BE SIZED TO
<br /> RESTRICT OCCUPANCY TO LESS THAN 300 PEOPLE. THE CAFETERIA WILL BE LOCATED ON THE
<br /> EASTERN END OF THE 3RD LEVEL TO ALLOW DIRECT ACCESS TO ENCLOSED STAIR K2 WHICH
<br /> PROV(DES A PROTECTED PATH TO THE EXTERIOR OF THE BUILDING AT GRADE AND ALSO
<br /> CONNECTS TO THE EASTERN PEDESTRIAN TUNNEL TO PROVIDE AN EGRESS PATH
<br /> , DISCHARGING REMOTELY FROM THE BUILDING.
<br /> 5. IBCWA§1005.1: GENERAL EGRESS CAPACITY
<br /> THE MULTIPLE MEZZANINE LEVEL OCCUPANTS PRIMARILY EXIT FROM THE ENCLOSED STAIRS
<br /> AND TRAVERSE THE HIGH-BAY FLOOR,WITHIN THE DESIGNATED MARKED WALKING PATHS,TO
<br /> REACH THE EXTERIOR EXIT DOORS.AS REQUIRED BY IBC 1004.1.1.2, THE OCCUPANT LOAD
<br /> FROM THE MEZZANINES ARE REQUIRED TO BE ADDED TO THE GROUND LEVEL OCCUPANT
<br /> LOAD AND THE EXIT CAPACITY MUST BE SUFFICIENT FOR THE COMBINED OCCUPANT LOAD.
<br /> DUE TO RESTRICTIONS ON EXTERIOR DOOR PLACEMENT RELATED TO THE LAYOUT OF THE '
<br /> MANUFACTURING EQUIPMENT, THE EXITS AT THE GROUND LEVEL DO NOT PROVIDE
<br /> SUFFICIENT CAPACITY TO MEET THE CODE PRESCRIPTIVE REQUIREMENTS. EVACUATION
<br /> MODELING USING BUILDINGEXODUS SOFTWARE WAS PERFORMED TO D
<br /> EMONSTRATE THAT
<br /> THE NUMBER, DISTRIBUTION AND CAPACITY OF EGRESS PROVIDED WILL BE SUFFICIENT FOR
<br /> THE PROJECTED OCCUPANT LOAD. THE RESULTING REPORT I5 PROVIDED AS A PART OF THE
<br /> ALTERNATE MEANS OF COMPLIANCE. PLEASE REFER TO HUGHES ASSOCIATES, INC.
<br /> "EVACUATION MODELING OF BOEING BUILDING 4058 USING BUILDINGEXODUS SOFTWARE,"
<br /> DATED OCTOBER 8, 2014.
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<br /> 725 PRIMERA BLVD � SUITE 215 ��'�, ,.
<br /> LAKE MARY � FL.ORIDA � 32746 900 SW 16th Street Suite 307 , o�,�r�titrti��'���1
<br /> P 407.647.3737 � F 407.647.4929 �
<br /> www.haifire.com Renton, Washington 98057 F �S�S�ov�l��`�
<br /> Project: 1 H RB00390 ` Q
<br /> SYM REVISION BY APPROVED DATE SYM REVISION BY APPROVED DATE w q S ACCEPTABILITY p�WN DATE SUBTITLE CURRENT REVISION SYMBOL DATE �
<br /> oF H, c�g 12105114 LIFE SAFETY NOTES CONTINUED W2548317 O 12/05/14 �
<br /> 0 ISSUE FOR CONSTRUCTIQN CGB HRB 12I05114 P`` N�r THIS DESIGN ANDIOR CHECKED "'•
<br /> � � SPECIFICATION IS APPROVED
<br /> CGB 12/05114 SHEET �
<br /> O�,H� � BftPHARCHITECTS ENGINEER TITLE BOEING 777X CWC BUILDING �
<br /> ENGiNEeRSiNC. APPROVED BY DEPT. DATE HRB 12105l14 AL2 N
<br /> N0.3137 CHECKED N
<br /> N
<br /> ��'� � APPROVED � �
<br /> o BUILDING40 58
<br /> !c .�� JOB NO. COMP NO. cri
<br /> '�qT �,tiP 40-58-AL2 v
<br /> F oF putNo APPROVED
<br /> - ARCHITECTURAL MASTER EVERETT, WA owc No. 40-58-AL2
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