Item 30 - 4th and Mortimer Mixed-Use Development Project Located at 409 and 509 East Fourth Street

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1218417OF COLUMNS AND PRIMARY STRUCTURAL FRAME19201AD-221-HOUR FIRE RESISTIVE RATED WALL PER DETAILCOLUMN PROTECTION OPTION "A"2-1/2 HOURS2-1/2 HOURS(WOOD OR STEEL) COLUMN WHERE OCCURS PER 25 40 20 40 25 150 MINUTES TIME ASSIGNED TO WALLBOARD MEMBRANES (C.B.C. TABLE 722.6.2(1) (TYP.)TIME ASSIGNED TO CONTRIBUTION OF WOOD FRAME (C.B.C. TABLE 722.6.2(2)CUMULATIVE CALCULATED FIRE RESISTANCE RATING OF WALLTWO (2) LAYERS 5/8" TYPE "X" GYPSUM WALLBOARD EACH SIDE OF COLUMNEXPOSED TO WALL CAVITY120 120 CUMULATIVE TIME ASSIGNMENT OF COLUMN ENCASEMENT PROTECTIONAT WALL FACE SIDES OF COLUMNPER C.B.C. SECTION 722.640404040TIME ASSIGNED TO WALLBOARD MEMBRANES (C.B.C. TABLE 722.6.2(1) (TYP.)120120CUMULATIVE TIME ASSIGNMENT OF COLUMN ENCASEMENT PROTECTIONAT COLUMN FACES EXPOSED TO WALL CAVITY3 HOURS20TIME ASSIGNED TO CONTRIBUTION OF WOOD FRAME (C.B.C. TABLE 722.6.2(2)EXTENTS OF SEPARATE WALL ASSEMBLIES WITH CUMULATIVE CALCULATEDFIRE RESISTANCE RATING OF WALL PER C.B.C. SECTION 722.6NOTES:1.WHERE COLUMN REQUIRING INDIVIDUAL ENCASEMENT PER C.B.C. SECTION 704.3 OCCURS WITHIN A 2x4 STUD WALL TYPE PER PLAN, PROVIDEENCASEMENT BY ADDING FACE ONE (1) LAYER OF 1/2" TYPE "X" GYPSUM WALLBOARD ON EACH SIDE OF WALL. ADD TWO (2) LAYERS OF 5/8" TYPE "X"GYPSUM WALLBOARD ON EACH SIDE OF COLUMN FACE EXPOSED TO CAVITY OF WALL.2.CONFIRM MINIMUM CLEARANCE REQUIRED FOR ACCESSIBILITY, FIXTURE, EQUIPMENT AND FINISHES ARE MAINTAINED IF THICKNESS OF ADDITIONALGYPSUM WALLBOARD IS ADDED TO WALL. SEE PLANS.1AD-221-HOUR FIRE RESISTIVE RATED WALL PER DETAILCOLUMN PROTECTION OPTION "C"110 MIN. 25 2520 INCLUDE 20 MIN. SIDE OF COLUMN FOR INTUMESCENT COATING 1 HOUR1 HOUR1.83HOURS252520INCLUDE 20 MIN.SIDE OF COLUMNFOR INTUMESCENT COATING NOTES:2.WHERE COLUMN REQUIRING INDIVIDUAL ENCASEMENT PER C.B.C. SECTION 704.3 OCCURS WITHIN A 2x4 STUD WALL TYPE PER PLAN, COAT 4x4 COLUMNWITH INTUMESCENT COATING TO PROVIDE A MINIMUM 20 MINUTES FIRE RESISTIVE RATED PROTECTION. PROVIDE ONE (1) LAYER 5/8" TYPE "X" GYPSUMWALLBOARD EACH SIDE OF 4x4 COLUMN FACE EXPOSED TO CAVITY OF WALL.1.SEE OPTION "A" ABOVE FOR TYPICAL NOTES, DIMENSIONS, SIMILAR CONDITIONS AND ADDITIONAL INFORMATION.COAT ALL AND ENTIRE FACES OF COLUMN WITH INTUMESCENT COATINGPER COATING MFGR'S REQUIREMENTS3.INTUMESCENT COATING: 40 MILS (MIN.) ALBI CLAD "FP"TEST DATA: WESTERN FIRE CENTER, INC. WFCi PN# 04042AFIRE RESISTANCE RATING: 60 MINUTES (FOR PURPOSES OF THIS DETAIL, ONLY 20 MINUTES OF FIRE RESISTANCE VALUE IS CONSIDERED)DROP BEAM ENCASEMENTFLUSH BEAM ENCASEMENT4040404040 404040404040 40 40 40 1AD-211-HOUR FIRE RESISTIVE RATED FLOOR/CEILING PER DETAILWALL PER PLAN (WHERE OCCURS)JOISTS AT PARALLEL ORIENTATIONJOISTS AT PERPENDICULAR ORIENTATIONWHERE BEAM IS FLUSH TO BOTTOM OF FLOOR OR ROOF SHEATHING,THE SHEATHING CREATES THE UPPER MEMBRANE OF PROTECTIONENCASEMENT, AND IS ALLOWED A REDUCED FIRE RESISTANCE RATING OF15 MINUTES PER C.B.C. SECTION 722.6.2(5)PROTECTION ENCASEMENT ON ALL EXPOSED SIDESDHUTF TOP-MOUNT HANGER (INSTALL AFTER DRYWALL IS IN PLACE) BEAM (WOOD OR STEEL) PER 5/8" STRUCTURAL DRAWINGS120120120 BASE LAYER: ONE (1) LAYER TYPE "X" GYPSUM WALLBOARDSECOND LAYER: ONE (1) LAYER 5/8" TYPE "X" GYPSUM WALLBOARDWALL PER PLAN (WHERE OCCURS)JOISTS AT PARALLEL ORIENTATIONEND BLOCKING OF JOISTS AT PERPENDICULAR ORIENTATIONPROTECTION ENCASEMENT ON ALL EXPOSED SIDES, INCLUDING CONNECTIONSTO OTHER STRUCTURAL MEMBERS. ACCEPTABLE TO INTERRUPT PROTECTIONBEAM (WOOD OR STEEL) PER STRUCTURAL DRAWINGSBASE LAYER: ONE (1) LAYER 1/2" TYPE "X" GYPSUM WALLBOARDFACE LAYER: ONE (1) LAYER 5/8" TYPE "X" GYPSUM WALLBOARDENCASEMENT AT INTERSECTING WOOD FRAME MEMBERS ABOVE BEAM. WOODMEMBERS TO PROVIDE MIN. 15 MINUTE FIRE RESISTANCE PER C.B.C. SECTION722.6.2(5) AND TABLE 722.6.2(1)120120 TIME ASSIGNED TO WALLBOARD MEMBRANES (C.B.C. TABLE 722.6.2(1) (TYP.)CUMULATIVE TIME ASSIGNMENT OF BEAM ENCASEMENT PROTECTIONGENERAL NOTES:1.PER C.B.C. SECTION 704, STRUCTURAL MEMBERS AND ASSEMBLIES ARE REQUIRED TO HAVE A FIRE RESISTANCE RATING NOT LESS THAN THE RATINGSSUPPORTED BY THE STRUCTURAL MEMBERS.2.THE DETAILS AND CONDITIONS ILLUSTRATED ABOVE PROVIDE OPTIONS FOR MINIMUM 1-HOUR FIRE RESISTANCE RATED PROTECTION OF STRUCTURALMEMBERS.3.GENERAL CONTRACTOR TO IDENTIFY STRUCTURAL MEMBERS REQUIRING FIRE RESISTANCE RATED PROTECTION AND EITHER SELECT AN OPTION FROMABOVE, OR SUBMIT ALTERNATIVE DETAILS FOR ARCHITECT'S REVIEW, TO PROVIDE REQUIRED PROTECTION.4.WHERE PROTECTION OF STRUCTURAL MEMBER REQUIRES INCREASING DIMENSION OF FINISH WALL ASSEMBLY FROM THAT DESCRIBED ELSEWHERE,GENERAL CONTRACTOR TO CONFIRM REDUCED ROOM SIZE ACCOMMODATES ALL FIXTURES AND FINISHES AND PROVIDES ALL REQUIRED ACCESSIBILITYCLEARANCES AS SHOWN ON PLANS. NOTIFY ARCHITECT IMMEDIATELY IF FINISH ROOM DIMENSIONS ARE MODIFIED.5.FIRE RESISTANCE RATINGS OF ENCASEMENT PROTECTION ILLUSTRATED ABOVE ARE DETERMINED BY CALCULATIONS IN ACCORDANCE WITH C.B.C.SECTION 722 (C.B.C. SECTION 703.3, PROCEDURE #3.STRUCTURAL DRAWINGS6.DETAILS ILLUSTRATE WOOD STRUCTURAL COLUMNS AND BEAMS. WHERE STEEL STRUCTURAL COLUMNS AND BEAMS OCCUR, USE SAME PROTECTIONREQUIREMENTS UNLESS NOTED OTHERWISE IN DRAWINGS.2-HOUR FIRE RESISTANCE PROTECTIONFACE LAYER: ONE (1) LAYER 5/8" TYPE "X" GYPSUM WALLBOARD4040404040 2-HOUR STEEL BEAM PROTECTION40 404040 CCOPYRIGHTIt is the clients responsibility prior to or during construction to notify the architect in writingof any perceived errors or omissions in the plans and specifications of which a contractorthoroughly knowledgeable with the building codes and methods of construction shouldreasonably be aware. Written instructions addressing such perceived errors or omissionsshall be received from the architect prior to the client or clients subcontractors proceedingwith the work. The client will be responsible for any defects in construction if theseprocedures are not followed.Architecture + Planning17911 Von Karman Ave.Suite 200Irvine, CA 92614ktgy.com949.851.2133License StampProject Contact:Email:Principal: Project Designer:Project Director:KTGY Project No:2017-0934Debbie Hollanddholland@ktgy.comWil WongD. SchoolmeesterDebbie HollandDeveloperPHONE NO.4199 CAMPUS DRIVEIRVINE, CA 92612(714) 342-2502415 & 515 E. 4TH STREET, SANTA ANA, CA 92701 4TH AND MORTIMERNo.Date Description06-21-2023 FIFTH BUILDING DEPARTMENT SUBMITTALA03-21-23ADDENDUM AAD-29 FIRE-RATEDPRIMARYSTRUCTURAL FRAMEDETAILSAD-2906-21-23