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REVISIONS WOOD NAILER SECUREMENT CRITERIA FASTENERS THROUGH STEEL ANGLE 0 REQUIREMENTS BASED ON FACTORY MUTUAL LOSS PREVENTION DATA BULLETIN WITH MODIFICATIONS 2"X 6"TREATED ANCHOR BOLT DIAMETER), T APART 0 EXISTING OR NEWW STAINLESS STEEL 0 WOOD NAILER INSULATION 2"X 6"TREATED WOOD NAILER 3 ONE OF THE MOST OFTEN OVERLOOKED DETAILS ON A ROOFING SYSTEM IS THE ATTACHMENT METHOD FOR WOOD NAILERS AT THE PERIMETER OF THE ROOF. FACTORY MUTUAL(FM)PUBLISHES DESIGN RECOMMENDATIONS FOR THE ATTACHMENT OF WOOD NAILERS TO VARIOUS ANCHOR BOLT 48"O.C. SUBSTRATES AND FOR THE ATTACHMENT OF PERIMETER FLASHING DETAILS TO WOOD NAILERS.THIS INFORMATION IS CONTAINED IN FACTORY MUTUAL'S LOSS PREVENTION DATA BULLETIN 1-49. IN ACCORDANCE WITH THAT BULLETIN,THE INFORMATION LISTED BELOW SHOULD BE REFERENCED WHEN SELECTING AN APPROPRIATE PERIMETER ATTACHMENT METHOD. � I I ROOF DECK GENERAL CRITERIA j j MASONRY WALL _ • WOOD NAILERS THAT ARE ANCHORED TO STEEL,WOOD OF MASONRY DECKING SHOULD NOT BE LESS THAN 2"X 6"NOMINAL I I - (MINIMUM 1-1/2"X 5-1/2"). • WOOD NAILERS SHOULD BE DOUGLAS FIR,SOUTHERN YELLOW PINE OR OF WOOD HAVING SIMILAR DECAY RESISTANCE PROPERTIES. s u a s �A ATTACHMENT TO MASONRY WALLS • 1/2"ANCHOR BOLTS SPACED 48"ON CENTER WHEN FASTENING TO A MASONRY WALL,A 1/2 INCH BOLT IS PLACED 48 INCHES ON CENTER AT AN 8 INCH MINIMUM DEPTH(12 INCHES • 3/8"ANCHOR BOLTS SPACED 32"ON CENTER V MINIMUM WHEN MASONRY WALLS ARE COMPOSED OF LIGHTWEIGHT AGGREGATE OR CINDER)AS SHOWN IN FIGURE 1.EACH ANCHOR • MINIMUM 8"PENETRATION(MINIMUM 12"INTO LIGHTWEIGHT e O BOLT IS POSITIONED(STAGGERED IF THE WOOD NAILER IS WIDER THAN 6 INCHES)IN A BLOCK CORE OR AIR SPACE AND TIGHTLY FILLED AGGREGATE OR CINDER) F WITH CONCRETE TO THE DEPTH OF THE BOLT. • BLOCK CORE OR AIR SPACE TIGHTLY FILLED WITH CONCRETE • 3/4"ANCHOR BOTS SPACED 48"ON CENTER O 1-60: CONCRETE FILL AT FASTENERS FIGURE 1 • AT 8'-0"CORNERS: a NOTE: PLASTIC PARTS MUST NOT BE USED WITH MASONRY ANCHORS 1-90: CONCRETE FILL ENTIRE TOP COURSE FASTENING DOUBLED(24"MAX.) FIGURE 4 a ATTACHMENT TO STEEL AND WOOD DECKING �� FACTORY MUTUAL HAS SPECIFIC REQUIREMENTS CONCERNING FILLING OF CORES OR VOIDS IN THE TOP COURSE OF CINDER BLOCKS a EXISTING SCREWS OR NEW STAINLESS STEEL EXISTING SCREWS OR NEW STAINLESS STEEL SCREWS SCREWS AND WASHERS(2 ROWS STAGGERED) AND WASHERS(2 ROWS STAGGERED)PER FIGURE 2 m FOR EXAMPLE: L PROJECTS LOCATED IN ZONE 2(FM 1-90 SECUREMENT)-FILL THE ENTIRE TOP COURSE. g O z PROJECTS LOCATED IN ZONE 1(FM 1-60 SECUREMENT)-FILL ONLY REQUIRED WHERE ANCHOR BOLTS ARE POSITIONED(48 INCHES ON c CENTER IN THE FIELD,24 INCHES ON CENTER AT ROOF CORNERS) AT OUTSIDE CORNERS,THE FASTENING DENSITY MUST BE INCREASED WITHIN THE FIRST 8 FEET IN EACH DIRECTION BY POSITIONING s O w ANCHOR BOLTS 24 INCHES ON CENTER 3 o 0 II AN ALTERNATE METHOD MAY BE USED BY INSTALLING 3/8 INCH DIAMETER ANCHOR BOLTS SPACED 32 INCHES APART. FOR OUTSIDE CORNERS,BOLTS ARE FASTENED 16 INCHES APART,8 FEET FROM EACH SIDE OF THE CORNER. IF ADDITIONAL WOOD NAILERS ARE m 0 N NEEDED,REFER TO FIGURE 5 FOR ATTACHMENT OF ADDITIONAL WOOD NAILERS. `rr^J U N O ATTACHMENT TO STEEL AND WOOD DECKING 3 PENETRATION OF THE FASTENERS SHOULD BE TO THE TOP FLUTES ONLY.THE FASTENERS MUST BE STAGGERED AS SHOWN IN • WOOD NAILERS ATTACHED WITH 2 ROWS OF NO.10 STAINLESS STEEL SCREWS m Z FIGURE 2 • SPACING OF FASTENERS IN EACH ROW SHALL NOT EXCEED 24 INCHES • SECURE ADDITIONAL NAILERS WITH 2 ROWS OF STAINLESS STEEL NAILS OR LAG Q SCREWS a Z 8' CAUTION:ATTENTION SHOULD BE PAID TO THE FACTORY MUTUAL REQUIREMENT WHICH CALLS FOR GALVANIZED STEEL WASHERS AT CORNERS,FASTENERS DOUBLED(MAXIMUM 12"ON CENTER IN EACH ROW) SPACING OF FASTENERS IN EACH ROW 24"MAXIMUM 5/g" (MINIMUM 5/8 INCH OUTSIDE DIAMETER)TO BE USED IN CONJUNCTION WITH GALVANIZED SCREWS. THIS REQUIREMENT IS NOT • PROVIDE STAINLESS STEEL WASHERS UNDER SCREW HEADS OR PANCAKE • AT 8-0"CORNERS,FASTENING DOUBLED(12"O.C.MAXIMUM) hi;�' RECOGNIZED IN MOST CASES AND MOST OFTEN FORGOTTEN. SCREWS MINIMUM FASTENER PENETRATION INTO BOTTOM NAILER 1%4" THE STAGGERED FASTENING PATTERN SHOULD BE INCREASED WITHIN 8 FEET FROM THE OUTSIDE CORNERS AS SHOWN IN FIGURE 3 s M FIGURE 5 N FIGURE 2 e IF THE PERIMETER NAILER IS TO BE SECURED TO A STEEL ANGLE,ANCHOR BOLTS MUST BE POSITIONED AT 48 INCH CENTERS AS SHOWN g IN FIGURE 4. C) ON WOOD DECKS,THE STAGGERED FASTENING PATTERN WITH GALVANIZED STEEL SCREWS SHOULD BE UTILIZED AS SHOWN IN FIGURE 2 ROOF AREA A v; w' y w a3 CO ATTACHMENT OF ADDITIONAL WOOD NAILERS FASTENING ENHANCEMENT AT 8'-0"CORNERS Roof Area Dimensions(feet): 500x220 w WHEN ADDITIONAL WOOD NAILERS ARE REQUIRED,THEY MUST BE ATTACHED WITH GALVANIZED NAILS OR LAG SCREWS THAT Mean Roof Height(feet): 25.0 J •y PENETRATE INTO THE BOTTOM NAILER AT 1-1/4 INCHES USING A STAGGERED FASTENING PATTERN IN TWO ROWS AT 24 INCHES APART Roof Slope: Flat:11/2:12 or less n V O AS SHOWN IN FIGURE 5. Parapet(s)(minimum 36 inches high): Yes Building Configuration Enclosed 8 Q C'4 W THE INCREASED FASTENING DENSITY WITHIN 8 FEET FROM THE OUTSIDE CORNERS IS STILL REQUIRED AND MUST COMPLY WITH FIGURE 3 2,-0. Exposure: B a Risk Category: II - Basic Wind Speed(three-second peak gust, 100 from ASCE 7-16,Figure 26.5-1B Basic Wind Speed EVEN THOUGH NOT EMPHASIZED IN THE BULLETIN,CONTRACTORS SHOULD EXAMINE OR QUESTION EXISTING CONDITIONS TO DETERMINE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o mph): - IF EXISTING WOOD NAILERS ARE ATTACHED IN COMPLIANCE WITH THE ABOVE CRITERIA. IF NOT,EXISTING WOOD NAILERS SHOULD BE Roof Deck Type: Wood Roof Covering Type: TPO 9 REFASTENED USING ONE OF THESE OPTIONS AND ADDITIONAL WOOD NAILERS MUST BE SECURED FOLLOWING FIGURE 5. 4 � o § 6' X 1W. Graphically,the strength design values are dipicted as follows: WOOD NAILERS PLAY A MAJOR ROLE IN THE PERFORMANCE OF THE ROOFING SYSTEM AND CONTRIBUTE TO THE WIND UPLIFT RESISTANCE 0 2"X 6"TREATED OF THE ROOF EDGE WHICH IS THE FIRST LINE OF DEFENSE DURING WINDSTORMS. IT IS IMPORTANT TO COMPLY WITH THE ABOVE 1'-0° WOOD NAILER 3 REQUIREMENTS AND PERIODICALLY CHECK VARIOUS UPDATES PUBLISHED BY FACTORY MUTUAL NOT ONLY FOR THE ATTACHMENT OF E WOOD NAILERS,BUT ALSO FOR THE SECUREMENT OF METAL EDGING:ESPECIALLY THOSE WHICH ARE SHOP FABRICATED. City of Everett Permit Review Q FASTENERS SPACED 24" O.C. OUTSIDE CORNER AREA 2 � 2 � 3 EVERETT Status: Reviewed for Permit fr W 3 0� ' 04/30/2024 11:52:29 AM h o"a o• o. .�, (3� J O O o z O O Zone I'm 14.7 pounds per square foot W 3 Zone 1= 25.5 pounds per square foot ULJ W D• Zone 2= 33.6 pounds per square foot co Q Zone 3= 45.8 pounds per square foot FIGURE 3 JOB NO: 70540 C7: 10.0 feet DATE: 11/15/23 Zonel' 14.7 pounds per square foot h: 25.0 feet DRAWN: JS Zonel 25.5 pounds per square foot CKD BY: JT Zone2 33.6 pounds per square foot 0.2h: 5.0 feet FILENAME:Everett 1 Zone3 45.8 pounds per square foot 0.6h: 15.0 feet SHEETSIZE: 24"x36" SHEET 7 of 8 R3.0 PLOT DATE:November30,20238:01 AM G:\FMS-Pmj..S(T-Serbs)-Cyb.rC AWulsltlon Projects\70540-FY24SeaNe M,r A05_W,NNFolder,CAD\70540Prd ,,FY24Everelll_Pl,,,,,d De,,I,.dw