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All ideas, drawings,specifications shown herein are the
<br />property of West Coast Design Group and shall not be
<br />used, copied, reproduced, or disclosed to any person, firm
<br />or corporation, without the written consent of West Coast
<br />Design Group. Any infringement will be subject to legal
<br />action. The contractor shall verify and be responsible for all
<br />dimensions and conditions on the job and notify this office of
<br />any variations from dimensions and conditions shown
<br />herewith. Written dimensions take precedence over scaled
<br />dimensions.
<br />Mark Transmittal Set Date Description
<br />03 3/27/2025
<br />SHEET TITLE
<br />A-8
<br />SHEET 19
<br />PROJECT NO:
<br />STATUS:
<br />DRAWN BY:
<br />CHK'D BY:
<br />
<br />
<br />PROJECT:
<br />CLIENT:
<br />PLOT DATE: 4/18/2025
<br /> 52-24
<br />PLAN CHECK#:101122356
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<br /> Submittal
<br />
<br />Details
<br />ADU
<br />3110 & 3112 S Griset Pl
<br />Santa Ana, CA 92704
<br />Matthew Mallari &
<br />Natalie Nguyen
<br />PLANNING - DESIGN
<br />41055 CHACO CANYON ROAD
<br />MURRIETA CA 92562
<br />WEST COAST
<br />DESIGN GROUPPLAN
<br />RAFTERS PER
<br />R-30 INSUL.
<br />ROOFING
<br />PLYWD. PER FRAMING
<br />(N) STUCCO FIN.
<br />INSULATION
<br />OVERHANG TO HAVE A
<br />STUCCO FINISH
<br />RADIANT
<br />BARRIER
<br />WHERE PROVIDED, VENTILATION OPENINGS FOR
<br />ENCLOSED ATTICS, GABLE ENDS, RIDGE ENDS,
<br />UNDER EAVES AND CORNICES, ENCLOSED EAVE
<br />SOFFIT SPACES, ENCLOSED RAFTER SPACES
<br />FORMED WHERE CEILINGS ARE APPLIED DIRECTLY
<br />TO THE UNDERSIDE OF ROOF RAFTERS,
<br />UNDERFLOOR VENTILATION, FOUNDATIONS AND
<br />CRAWL SPACES, OR ANY OTHER OPENING
<br />INTENDED TO PERMIT VENTILATION, EITHER IN A
<br />HORIZONTAL OR VERTICAL PLANE, SHALL BE IN
<br />ACCORDANCE WITH SECTION 1202 OF THE
<br />CALIFORNIA BUILDING CODE AND SECTIONS
<br />R337.6.1 THROUGH R337.6.2 TO RESIST
<br />BUILDING IGNITION FROM THE INTRUSION OF
<br />BURNING EMBERS AND FLAME THROUGH THE
<br />VENTILATION OPENINGS.
<br />R337.6.2 REQUIREMENTS
<br />VENTILATION OPENINGS SHALL BE FULLY COVERED
<br />WITH WILDFIRE FLAME AND EMBER RESISTANT
<br />VENTS APPROVED AND LISTED BY THE CALIFORNIA
<br />STATE FIRE MARSHAL, OR WUI VENTS TESTED TO
<br />ASTM E2886 AND LISTED, BY COMPLYING WITH
<br />ALL OF THE FOLLOWING REQUIREMENTS:
<br />THERE SHALL BE NO FLAMING IGNITION OF THE
<br />COTTON MATERIAL DURING THE EMBER INTRUSION
<br />TEST.
<br />THERE SHALL BE NO FLAMING IGNITION DURING
<br />THE INTEGRITY TEST PORTION OF THE FLAME
<br />INTRUSION TEST.
<br />THE MAXIMUM TEMPERATURE OF THE UNEXPOSED
<br />SIDE OF THE VENT SHALL NOT EXCEED 662°F
<br />(350°C). SEE ADDITONAL INFORMATION ON A-8 :
<br />WILDLAND-URBAN INTERFACE FIRE AREA
<br />REQUIREMENTS (PER CBC, CH. 7A):
<br />NO VENTS
<br />FIREBLOCKING
<br />1" BAFFLE
<br />RADIANT
<br />BARRIER
<br />B.N.
<br />E.N.
<br />6"
<br />3"
<br />45°4X6 BRACE WITH 1/2" X 10"
<br />LAG BOLTS. PRE-DRILL ALL
<br />HOLES. BOLTS AND WASHERS
<br />SHALL BE GALV. AT EACH
<br />BRACE
<br />2X6 WOOD MEMBER
<br />ATTACHED TO WALL
<br />1/2" DIA. X 8" LAG
<br />SCREW. PRE-DRILL.
<br />SCREW AND WASHER
<br />TO BE GALV.
<br />1/2" DIA. X 8" LAG
<br />SCREW. PRE-DRILL.
<br />SCREW AND WASHER
<br />TO BE GALV.
<br />1/2" DIA. X 12" LAG
<br />SCREW. PRE-DRILL.
<br />SCREW AND WASHER
<br />TO BE GALV.
<br />ALL EXPOSED WOOD TO BE
<br />PRIMED AND PAINTED TO
<br />MATCH TRIM
<br />Per Plan
<br />NOTCH RIM JOIST
<br />FOR 2X4
<br />2x RAFT. PER FRAMING
<br />PLAN
<br />PLYWOOD AS INDICATED
<br />ON FRAMING PLAN
<br />2X BLOCKING AT 4' O.C.
<br />MATCH SHEAR PANEL BELOW
<br />DBL. TOP PLATE
<br />NEW STUCCONOTE:
<br />PROVIDE RADIANT
<br />BARRIER ON THE
<br />SIDEWALL IN THE ATTIC,
<br />TYP.
<br />INSUL. IN THE ATTIC
<br />SIDEWALLS, TYP.
<br />ASPHALT SHINGLE ROOF
<br />RADIANT BARRIER
<br />ONE HOUR WALL
<br />PER DETAIL
<br />OVERHANG TO HAVE A
<br />STUCCO FINISH
<br />WHERE PROVIDED, VENTILATION OPENINGS FOR
<br />ENCLOSED ATTICS, GABLE ENDS, RIDGE ENDS,
<br />UNDER EAVES AND CORNICES, ENCLOSED EAVE
<br />SOFFIT SPACES, ENCLOSED RAFTER SPACES
<br />FORMED WHERE CEILINGS ARE APPLIED DIRECTLY
<br />TO THE UNDERSIDE OF ROOF RAFTERS,
<br />UNDERFLOOR VENTILATION, FOUNDATIONS AND
<br />CRAWL SPACES, OR ANY OTHER OPENING
<br />INTENDED TO PERMIT VENTILATION, EITHER IN A
<br />HORIZONTAL OR VERTICAL PLANE, SHALL BE IN
<br />ACCORDANCE WITH SECTION 1202 OF THE
<br />CALIFORNIA BUILDING CODE AND SECTIONS
<br />R337.6.1 THROUGH R337.6.2 TO RESIST
<br />BUILDING IGNITION FROM THE INTRUSION OF
<br />BURNING EMBERS AND FLAME THROUGH THE
<br />VENTILATION OPENINGS.
<br />NO ATTIC VENTS ALONG
<br />THIS WALL
<br />R337.6.2 REQUIREMENTS
<br />VENTILATION OPENINGS SHALL BE FULLY COVERED
<br />WITH WILDFIRE FLAME AND EMBER RESISTANT
<br />VENTS APPROVED AND LISTED BY THE CALIFORNIA
<br />STATE FIRE MARSHAL, OR WUI VENTS TESTED TO
<br />ASTM E2886 AND LISTED, BY COMPLYING WITH
<br />ALL OF THE FOLLOWING REQUIREMENTS:
<br />THERE SHALL BE NO FLAMING IGNITION OF THE
<br />COTTON MATERIAL DURING THE EMBER INTRUSION
<br />TEST.
<br />THERE SHALL BE NO FLAMING IGNITION DURING
<br />THE INTEGRITY TEST PORTION OF THE FLAME
<br />INTRUSION TEST.
<br />THE MAXIMUM TEMPERATURE OF THE UNEXPOSED
<br />SIDE OF THE VENT SHALL NOT EXCEED 662°F
<br />(350°C). SEEADDITIONAL INFORMATION ON A-8:
<br />WILDLAND-URBAN INTERFACE FIRE AREA
<br />REQUIREMENTS (PER CBC, CH. 7A):
<br />B.N.
<br />B.N.
<br />SCALE: 1 1/2"= 1'-0"1 1-Hour Eave Overhang
<br />SCALE: 1" = 1'-0"2 Roof Over Entry
<br />SCALE: 1 1/2"= 1'-0"3 Barge Detail (1-Hour)
<br />WILDLAND-URBAN INTERFACE FIRE AREA REQUIREMENTS (PER CBC,
<br />CH. 7A):
<br />1. ROOF GUTTERS SHALL BE PROVIDED WITH THE MEANS TO PREVENT THE
<br />ACCUMULATION OF LEAVES AND DEBRIS IN THE GUTTER. (PER CBC 707A.11)
<br />2. VENTILATION OPENINGS FOR ENCLOSED ATTICS, ENCLOSED EAVE SOFFIT
<br />SPACES, ENCLOSED RAFTER SPACES FOR AWNINGS SHALL BE APPLIED
<br />DIRECTLY TO THE UNDERSIDE OF ROOF RAFTERS AND VENTS FOR ROOF
<br />VENTILATION OPENINGS SHALL BE FULLY COVERED WITH METAL WIRE MESH.
<br />VENTILATION OPENINGS FOR OTHER ENCLOSED SPACES SHALL MEET THE
<br />FOLLOWING REQUIREMENTS:
<br /> A. THE LEAST DIMENSION OF THE OPENINGS SHALL BE A MINIMUM OF 1/16”
<br />AND SHALL NOT EXCEED 1/8”.
<br /> B. VENTS SHALL USE CORROSION-RESISTANT NONCOMBUSTIBLE MATERIAL.
<br /> C. VENTS LOCATED LESS THAN 10 FEET FROM ROOF COVERING, ALONG THE
<br />RIDGE OR IN THE EAVE SHALL BE DISPOSED SURFACE OF THE VENT COVERED
<br />BY NONCOMBUSTIBLE WIRE MESH, MAY BE OF COMBUSTIBLE MATERIALS.
<br />3. VENTS SHALL NOT BE INSTALLED ON THE UNDERSIDE OF EAVES OR
<br />CORNICES. (PER CBC 706A.3)
<br />4. EXCEPTION:
<br /> A. CORNICE OR EAVE VENTS MAY BE INSTALLED IF THEY ARE SPECIFICALLY
<br />APPROVED AS RESISTING THE INTRUSION OF FLAME AND BURNING EMBERS.
<br /> B. VENTS SHALL BE PROTECTED BY NONCOMBUSTIBLE MATERIAL WITH
<br />METAL WIRE MESH A MINIMUM OF 1/16” AND A MAXIMUM OF 1/8” AND SHALL
<br />NOT BE INSTALLED IN HORIZONTAL UNDERLAYMENTS OF EAVE OVERHANGS OR
<br />CORNICES, UNLESS THE VENT IS LISTED AS RESISTING THE INTRUSION OF
<br />FLAME AND BURNING EMBERS.
<br /> C. VENTS SHALL NOT BE INSTALLED IN ROOFING OR WALL ASSEMBLY IN A
<br />MANNER TO ALLOW EMBERS TO ENTER.
<br />5. EXTERIOR WALL COVERINGS SHALL EXTEND FROM THE TOP OF THE
<br />FOUNDATION TO THE ROOF AND TERMINATE AT A NOMINAL SOLID WOOD
<br />BLOCKING BETWEEN RAFTERS AT THE ROOF OVERHANGS, OR IN THE CASE OF
<br />ENCLOSED EAVES, TERMINATE AT THE ROOFLINE. (PER CBC 707A.3)
<br />6. IN OPEN ROOF EAVES, THE EXPOSED ROOF DECK ON THE UNDERSIDE OF
<br />UNENCLOSED ROOF EAVES SHALL CONSIST OF ONE OF THE FOLLOWING:
<br /> A. NONCOMBUSTIBLE MATERIAL.
<br /> B. IGNITION-RESISTANT MATERIAL.
<br /> C. ONE-HOUR FIRE-RATED ASSEMBLY.
<br /> D. A MINIMUM 7/16” STRUCTURAL PANEL SHEATHING APPLIED BEHIND AN
<br />EXTERIOR COVERING ON THE UNDERSIDE OF THE FIRST EXPOSED RAFTER WALL
<br />EXTENDED 2 FEET UP THE UNDERSIDE OF THE ROOF DECK BEYOND THE
<br />EXTERIOR WALL.
<br />7. ENCLOSED ROOF EAVES AND ROOF EAVE SOFFITS. THE EXPOSED
<br />SURFACES SHALL BE ONE OF THE FOLLOWING:
<br /> A. NONCOMBUSTIBLE MATERIAL.
<br /> B. IGNITION-RESISTANT MATERIAL.
<br /> C. ONE-HOUR FIRE-RATED ASSEMBLY.
<br /> D. A MINIMUM 7/16” STRUCTURAL PANEL SHEATHING APPLIED BEHIND AN
<br />EXTERIOR COVERING ON THE UNDERSIDE OF THE FIRST EXPOSED RAFTER WALL
<br />EXTENDED 2 FEET UP THE UNDERSIDE OF THE ROOF DECK BEYOND THE
<br />EXTERIOR WALL.
<br />8. UNENCLOSED ROOF EAVES, ROOF EAVE SOFFITS, AND PROJECTIONS
<br />BEYOND AN EXTERIOR WALL OTHER THAN AT THE LOWER END OF THE RAFTER
<br />TAILS.
<br /> A. MATERIALS SHALL MEET THE PERFORMANCE CRITERIA FOR A 10-MINUTE
<br />MINIMUM DIRECT FLAME EXPOSURE TEST STANDARD.
<br /> B. MATERIALS SHALL BE IGNITION RESISTANT, NONCOMBUSTIBLE, OR ONE-
<br />HOUR FIRE-RATED ASSEMBLY.
<br />9. UNDERFLOOR PROTECTION. UNDERSIDE OF APPENDAGES AND FLOOR
<br />PROJECTIONS, THE PROJECTION UNDERSIDE SHALL BE ENCLOSED TO THE
<br />GRADE OR THE UNDERSIDE OF THE FLOOR ASSEMBLY SHALL BE PROTECTED
<br />BY ONE OF THE FOLLOWING:
<br /> A. NONCOMBUSTIBLE MATERIAL.
<br /> B. IGNITION-RESISTANT MATERIAL.
<br /> C. ONE-HOUR FIRE-RATED ASSEMBLY.
<br /> D. A MINIMUM 7/16” STRUCTURAL PANEL SHEATHING APPLIED BEHIND AN
<br />EXTERIOR COVERING.
<br />10. HORIZONTAL TRIM BOARDS ON EXTERIOR PORCHES AND PATIO COVER
<br />STRUCTURES SHALL BE IGNITION RESISTANT.
<br />11. HEAVY TIMBER STRUCTURAL COLUMNS AND BEAMS ON UNDER-FLOOR
<br />PROTECTION, UNDERSIDE OF APPENDAGES AND FLOOR PROJECTIONS.
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