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STAIR KEYNOTES <br />S1 STEEL CHANNEL STRINGER <br />S2 1-PIECE SLIP RESISTANT PRE -CAST CONC TREAD AND RISER <br />S3 STAIR LANDING: STAIR CONSTRUCTION <br />S4 2X WOOD STRINGER - REFER TO STRUCTURAL PLANS <br />S5 PLYWOOD TREAD AND RISER <br />S6 WOOD FRAMED LANDING - REFER TO STRUCTURAL PLANS <br />S7 SLIP -RESISTANT WARNING STRIPE AT TOP APPROACH AND BOTTOM TREAD <br />S8 HANDRAIL - 34" MIN TO 38" MAX ABOVE TREAD NOSING PER CBC 1012.2. MAX. 45, <br />PROJECTION INTO REQUIRED WIDTH PER CBC 1012.8. <br />59 GUARD - 42" MIN HIGH RAILING w/ OPENINGS SPACED SO A 4" SPHERE CANNOT PASS <br />THROUGH <br />S10 STAIRWAY FLOOR NUMBER SIGN (SEE SIGNAGE DWGS FOR MORE INFO) <br />S11 TACTILE FLOOR DESIGNATION SIGN (SEE SIGNAGE DWGS FOR MORE INFO) <br />S12 TACTILE EXIT SIGN (SEE SIGNAGE DWGS FOR MORE INFO) <br />S13 STANDPIPE - CLASS I <br />S14 ALTERNATING TREAD STAIR: PREFABRICATED STEEL <br />S15 METAL GATE BARRIER - PER CBC 1023.8 <br />S16 GUARDWALL - 42" MIN HIGH <br />ElSECURITY SCREEN SYSTEM- 1" STEEL BAR TOP AND BOTTOM RAILS WITH 1/41, PICKETS AT 4" <br />El <br />O.C.- MOUNT TO FLOOR SLAB OR STAIR STRINGERS- PROVIDE 1/4" SQ. , 9 GAUGE WIRE MESH AS <br />NOTED ON PLAN <br />S18 BARRIER GUARDRAIL - 27" H <br />S19 CAST -IN -PLACE CONCRETE STAIR <br />S20 DASHED ARC INDICATING 44" CLEAR PATH ABOUT STAIR / HANDRAIL, PER CBC 1011.2 <br />S20a DASHED ARC INDICATING 48" CLEAR PATH ABOUT STAIR / HANDRAIL, PER CBC 1011.2 <br />S21 KNOX BOX - SEE BUILDING PLANS <br />S22 NYSTROM ROOF HATCH WITH INTEGRAL OSHA COMPLIANT ALUMINUM SAFETY RAILS (POWDERCOAT <br />SAFETY YELLOW) - SEE STAIR ROOF LEVEL FOR OPENING SIZE <br />9 PER CBC SEC. 1011.6 THE DOOR AT ANY POSITION SHALL NOT REDUCE THE REQUIRED STAIR <br />LANDING DIMENSION TO LESS THAN ONE-HALF ITS REQUIRED WIDTH. - CLEAR SPACE IS SHOWN ON <br />PLAN WITH DASHED ARC. <br />STAIR NOTES <br />1. FOR TYPICAL STAIR DETAILS, REFER TO <br />AD-71 AD-71.1 <br />2. TREADS: ALL TREAD SURFACES SHALL BE SLIP RESISTANT. TREADS SHALL HAVE SM00 <br />ROUNDED OR CHAMFERED EXPOSED EDGES AND NO ABRUPT EDGES AT THE NOSING. <br />3. TREAD AND RISER DIMENSIONAL UNIFORMITY: STAIR TREADS AND RISERS SHALL BE OF <br />UNIFORM SIZE AND SHAPE. THE TOLERANCE BETWEEN THE LARGEST AND SMALLEST RISER <br />HEIGHT OR BETWEEN THE LARGEST AND SMALLEST TREAD DEPTH SHALL NOT EXCEED <br />0.375 INCH IN ANY FLIGHT OF STAIRS. <br />4. TREAD PROFILE: THE RADIUS OF THE LEADING EDGE OF THE TREAD SHALL BE NOT <br />_ <br />_ _ _ T.O. PL <br />GREATER THAN 0.5 INCH. BEVELING OF NOSING SHALL NOT EXCEED 0.5 INCH. RISERS SHALL <br />BE SOLID AND VERTICAL OR SLOPED FROM THE UNDERSIDE OF THE LEADING EDGE OF THE <br />ROOF HATCH W/ <br />��____-_________________�� <br />TREAD ABOVE AT AN ANGLE NOT MORE THAN 30 DEGREES FROM THE VERTICAL. THE <br />GUARDRAIL AND <br />it <br />li <br />LEADING EDGE (NOSING) OF TREADS SHALL PROJECT NOT MORE THAN 1.25 INCHES <br />SELF -CLOSING <br />it <br />ii <br />BEYOND THE TREAD BELOW AND ALL PROJECTIONS OF THE LEADING EDGES SHALL BE OF <br />GATE <br />li <br />II <br />it <br />l <br />UNIFORM SIZE, INCLUDING THE LEADING EDGE OF THE FLOOR AT THE TOP OF A FLIGHT. <br />5. HANDRAIL CONTINUITY: HANDRAIL -GRIPPING SURFACES SHALL BE CONTINUOUS, WITHOUT <br />INTERRUPTION BY NEWEL POSTS OR OTHER OBSTRUCTIONS. <br />6. HANDRAIL EXTENSIONS: HANDRAILS SHALL RETURN TO THE WALL, GUARD OR THE WALKING <br />T.O. PL <br />SURFACE OR SHALL BE CONTINUOUS TO THE HANDRAIL OF AN ADJACENT STAIR FLIGHT. AT <br />STAIRWAYS WHERE HANDRAILS ARE NOT CONTINUOUS BETWEEN FLIGHTS, THE HANDRAILS <br />SHALL EXTEND AT LEAST 12 INCHES BEYOND THE TOP RISER AND 12 INCHES, PLUS THE <br />TREAD WIDTH, BEYOND THE BOTTOM RISER. WHERE THE STAIRS ARE CONTINUOUS FROM <br />S14 <br />- <br />LANDING TO LANDING, THE INNER RAIL SHALL BE CONTINUOUS AND NEED NOT EXTEND OUT <br />U <br />/ / <br />INTO THE LANDING. <br />Q <br />/ <br />7. EXIT ENCLOSURE PENETRATIONS: PENETRATIONS INTO AND OPENINGS THROUGH AN EXIT <br />J <br />/ <br />ENCLOSURE ARE PROHIBITED EXCEPT FOR REQUIRED EXIT DOORS, SPRINKLER PIPING, <br />UNIT <br />Zo <br />U <br />STANDPIPES, ELECTRICAL RACEWAYS) FOR FIRE DEPARTMENT COMMUNICATION SYSTEMS <br />AND ELECTRICAL RACEWAYS) SERVING THE EXIT ENCLOSURE. THERE SHALL BE NO <br />UNIT <br />PENETRATIONS OR COMMUNICATION OPENINGS, WHETHER PROTECTED OR NOT, BETWEEN <br />ADJACENT EXIT ENCLOSURES. <br />5TH FL_SUBFLO_OR <br />8. STRIPING FOR THE VISUALLY IMPAIRED: INTERIOR EXIT STAIRWAYS SHALL HAVE THE UPPER <br />5TH FL SUBFLOOR <br />APPROACH AND LOWER TREAD MARKED BY A STRIPE PROVIDING CLEAR VISUAL CONTRAST. <br />T.O. PL <br />- <br />- - - <br />EXTERIOR EXIT STAIRWAYS SHALL HAVE STRIPES ON THE UPPER APPROACH AND ON ALL <br />_ <br />_ T.O. PL <br />TREADS. THE STRIPE SHALL BE A MINIMUM OF 2 INCHES WIDE TO A MAXIMUM OF 4 INCHES <br />J <br />WIDE PLACED PARALLEL TO, AND NOT MORE THAN 1 INCH FROM, THE NOSE OF THE STEP <br />} U) <br />w <br />OR UPPER APPROACH. THE STRIPE SHALL EXTEND THE FULL WIDTH OF THE STEP OR <br />/ 0� W <br />r-J <br />U) <br />UPPER APPROACH AND SHALL BE OF MATERIAL THAT IS AT LEAST AS SLIP -RESISTANT AS <br />U <br />/ / > <br />-J <br />w <br />THE OTHER TREADS OF THE STAIR. A PAINTED STRIPE SHALL BE ACCEPTABLE. <br />QZQ <br />/ / � N <br />/ <br />/ <br />W <br />U <br />WU) <br />> x <br />Q <br />/ <br />/ <br />W = <br />9. ALL DIMENSIONS ARE TO THE FACE OF STUD, CMU OR CONCRETE AS OCCURS, U.N.O. <br />/ <br />/ _ a <br />/ <br />z <br />_ <br />UNIT <br />zo J <br />b� <br />°OW <br />+IU <br />Q <br />�� <br />�� <br />UNIT <br />�� <br />0 <br />LEGEND <br />4TH FL SUBFLOOR <br />/ <br />T.O. PL <br />4TH FL SUBFLOOR <br />U) <br />J <br />- <br />2X4 WOOD STUD FRAMING <br />W <br />w II <br />/ w � <br />F- <br />J <br />wx <br />I 2X6 WOOD STUD FRAMING <br />Z <br />/ W_ <br />�- / <br />/ <br />W <br />W <br />Wfn <br />Q <br />W' <br />/ Cn N <br />/ <br />-_ <br />/ <br />/ <br />U <br />> <br />CMU WALL - SEE STRUCTURAL <br />Q <br />/ � <br />/ <br />� <br />/ <br />Q <br />U) IN <br />UNIT <br />Zo U <br />�I <br />oo w <br />C° <br />CONCRETE WALL SEE STRUCTURAL <br />00 <br />2 <br />Q <br />00 <br />- <br />EXTENT OF EXTERIOR CEMENT PLASTER FINISH <br />_TF <br />W <br />_ <br />/ DIAGONAL HATCH INDICATES EXTENT OF EXTERIOR PLASTER SOFFIT OR <br />3RD FL SUBFLOOR <br />DROPPED GYP. BD. CEILING BELOW RATED FLOOR/CEILING ASSEMBLY. SOFFIT <br />3RD FL SUBFLOOR <br />HEIGHT AS INDICATED IN PLAN. EXTERIOR CEMENT PLASTER OVER EXTRUDED <br />T.O._PL. <br />METAL LATH OCCURS AT LOBBIES WITH EXTERIOR WALL OPENINGS. SEE <br />ENLARGED PLANS FOR EXTENT. <br />T.O.PL. <br />30" x48" CLEAR FLOOR AREA <br />/ <br />CO <br />L----J <br />W <br />/ W <br />/ W C/ <br />r-J <br />J <br />>- fn <br />l = <br />- <br />U <br />/ > II <br />r <br />/ <br />W <br />W <br />W cn <br />5' 0" DIAMETER TURN AROUND SPACE <br />Q <br />< <br />// S9 fn � <br />/ <br />_ <br />/ <br />/ <br />U <br />> <br />i <br />C? W <br />co <br />/ +I 0 <br />-1 <br />O <br />/ <br />Q <br />(n N <br />\ <br />- - <br />UNIT <br />z U <br />/ <br />S8 <br />o 00 <br />W <br />`° <br />UNIT <br />�I w <br />o00 <br />ENLARGED PLAN REFERENCES <br />= <br />Q <br />S3 <br />= <br />2ND FL SUBFLOOR <br />1. FOR WALL FIRE -RATINGS AND DETAIL REFERENCES, FIRE EXTINGUISHER <br />LOCATIONS AND FIRE ACCESS ANALYSIS, SEE SHEETS AO-11 THRU AO-25 . <br />2ND FL SUBFLOOR <br />T.O.PL. <br />- <br />- - <br />2. FOR EXITING ANALYSIS INCLUDING OCCUPANT LOADS, EXIT SIGNS AND DOOR PANIC <br />/ <br />S9 <br />T.O.PL. <br />HARDWARE LOCATIONS, SEE SHEETS AO 31 THRU AO 45. <br />/ <br />/ <br />� <br />s <br />S8 - <br />/ <br />U) <br />>w <br />J 1 <br />D-71.1 W E <br />- <br />S3 D 71.1 <br />w cn <br />W <br />S5 � <br />M <br />WW <br />W W <br />UNIT <br />W Of <br />Q <br />NW <br />UNIT <br />U <br />°° <br />co <br />J <br />S 18 <br />O N <br />LLI <br />+I (q <br />U <br />_, <br />S9 <br />ZC� <br />Q \ <br />Lin W <br />C1I <br />w <br />= <br />S8 <br />Q <br />�� <br />N <br />z° <br />J <br />U <br />> w <br />UJ <br />1ST FL T.O. SLAB ON GRADE <br />4 2 <br />Q <br />- <br />11=111=111=III=1I 1=1I <br />`I -I 11 1 I 1 1 I I 11=I 1 1 I <br />IIIIIIIIIIII11 <br />S 5 CY) <br />iv C° <br />S5 <br />1 ST FL T.O. SLAB ON GRADE <br />3 <br />-=11111 ' <br />III=11: II=-=---__—���______ <br />_ <br />s - - - -• - - - - - - - `'' w <br />_ _ _ _ <br />- - --T --- t - •• T .- .�--;-.- := f= -_ ----_- <br />- <br />_ <br />;� :-------,-- <br />- �- <br />- - - <br />D-71.1 <br />=1I 11I I 1I 1I 1I <br />'� =1 11 <br />= <br />1I I 1I1 1I I 1I1 1I1 1I1 1I1 1I1 1I1 1I1 1 ffLl - , - 1 "' "' - <br />- _' <br />_ii= -_III IIII-11fillI Tl l l l l_I 11=1 1 11 lIII=111_I L 11 = l l <br />"- 1 I 1-1 I I� ,I I_ -III ••I 1 <br />l l l_ <br />' -I I I � l l l 11 I I1 I <br />I1 I IIII -1 I I_I I IL - N <br />l I I III I - <br />I I III I <br />-1 = <br />= 1=1 =1 11I ;III=11=1 <br />-I <br />I�IIllllllll��lli. � i=_;,Iliilllllll III- <br />-= i. <br />=1-ITI-III-I I- <br />-III-III1T'- 3 <br />ail-�D-71.1 <br />STAIR B4 SECTION <br />SCALE: 1/4"-1'-0" <br />2 <br />STAIR B 3 SECTION <br />SCALE: 1/4"=1'-0" <br />1 <br />Architecture + Planning <br />17911 Von Karman Ave. <br />Suite 200 <br />Irvine, CA 92614 <br />ktgy.com <br />949.851.2133 <br />KTGY Project No: 2017-0934 <br />Project Contact: Debbie Holland <br />Email: dholland@ktgy.com <br />Principal: Wil Wong <br />Project Designer: D. Schoolmeester <br />Project Director: Debbie Holland <br />Developer <br />ED7 OAK <br />I VES`I'MEN"1 S <br />4199 CAMPUS DRIVE <br />I RVI N E, CA 92612 <br />PHONE NO. (714) 342-2502 <br />IJ <br />T_ <br />06 <br />No. Date Description <br />It is the clients responsibility prior to or during construction to notify the architect in writing <br />of any perceived errors or omissions in the plans and specifications of which a contractor <br />thoroughly knowledgeable with the building codes and methods of construction should <br />reasonably be aware. Written instructions addressing such perceived errors or omissions <br />shall be received from the architect prior to the client or clients subcontractors proceeding <br />with the work. The client will be responsible for any defects in construction if these <br />procedures are not followed. <br />D ARcy,T <br />40 -cam <br />No. C29795 <br />RENEWAL DATE <br />AUGUST 31, 2023 <br />�F CAS\ <br />License Stamp <br />STAIR B3&B4 <br />SECTION <br />A5-83 <br />COPYRIGHT U <br />