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TEMPERED GLASS <br />WALL AT STAIR SHALL BE MINIMUM 1-HOUR <br />FIRE PARTITION AND WALL ASSEMBLIES <br />SHALL EXTEND FROM THE FOUNDATION OF <br />THE UNDERSIDE OF THE ROOF SHEATHING <br />23 RISER @ 7" MAX/RISER <br />1'-11" MIN. <br />EXIT SIGN, REFER TO 1/AD1 <br />HANDRAIL 34" TO 38" HIGH ABOVE TREAD NOSING <br />HANDRAIL 34" TO 38" HIGH ABOVE TREAD NOSING <br />WALL AT STAIR SHALL BE MINIMUM 1-HOUR <br />FIRE PARTITION AND WALL ASSEMBLIES SHALL <br />EXTEND FROM THE FOUNDATION OF THE <br />UNDERSIDE OF THE ROOF SHEATHING <br />23 RISER @ 7" MAX/RISER <br />1'-11" MIN. <br />EXIT SIGN, REFER TO 1/AD1 <br />TEMPERED GLASS <br />8' <br /> <br />- <br /> <br />6 <br />" <br />HANDRAIL 34" TO 38" HIGH ABOVE TREAD NOSING <br />WALL AT STAIR SHALL BE MINIMUM 1-HOUR <br />FIRE PARTITION AND WALL ASSEMBLIES <br />SHALL EXTEND FROM THE FOUNDATION OF <br />THE UNDERSIDE OF THE ROOF SHEATHING <br />23 RISER @ 7" MAX/RISER <br />4' <br /> <br />- <br /> <br />0 <br />" <br /> <br />6 <br />" <br /> <br />4 <br />' <br /> <br />- <br /> <br />0 <br />" <br />6' - 1" 9' - 2" 4' - 0" <br />1'-0" MIN. <br />EXIT SIGN, "EXIT STAIR DOWN". REFER TO 1/AD1 <br />TEMPERED GLASS <br />TEMPERED GLASS <br />WALL AT STAIR SHALL BE MINIMUM 1-HOUR <br />FIRE PARTITION AND WALL ASSEMBLIES <br />SHALL EXTEND FROM THE FOUNDATION OF <br />THE UNDERSIDE OF THE ROOF SHEATHING <br />HANDRAIL 34" TO 38" HIGH <br />ABOVE TREAD NOSING23 RISER @ 7" MAX/RISER <br />1'-11" MIN.1'-0" MIN. <br />1'-0" MIN. <br />4' - 0" 10' - 1" 5' - 0" <br />EXIT SIGN, "EXIT STAIR DOWN". REFER TO 1/AD1 <br />1' - 0" <br />4' <br /> <br />- <br /> <br />0 <br />" <br /> <br />6 <br />" <br /> <br />4 <br />' <br /> <br />- <br /> <br />0 <br />" <br />TEMPERED GLASS <br />TEMPERED GLASS <br />JOB# <br />DATE <br />DRAWN <br />SCALE <br />Th <br />i <br />s <br /> <br />D <br />u <br />c <br />o <br />u <br />m <br />e <br />n <br />t <br /> <br />i <br />s <br /> <br />t <br />h <br />e <br /> <br />p <br />r <br />o <br />p <br />e <br />r <br />t <br />y <br /> <br />o <br />f <br /> <br />Y <br />N <br /> <br />A <br />R <br />C <br />H <br />I <br />T <br />E <br />C <br />T <br />S <br />, <br /> <br />I <br />N <br />C. <br />, <br /> <br />a <br />n <br />d <br /> <br />s <br />h <br />a <br />l <br />l <br /> <br />n <br />o <br />t <br /> <br />be <br /> <br />r <br />e <br />p <br />o <br />r <br />d <br />u <br />c <br />e <br />d <br /> <br />w <br />i <br />t <br />h <br />o <br />u <br />t <br /> <br />t <br />h <br />e <br /> <br />w <br />r <br />i <br />t <br />t <br />e <br />n <br /> <br />c <br />o <br />n <br />s <br />e <br />n <br />t <br /> <br />o <br />f <br /> <br />Y <br />N <br />G <br /> <br />A <br />R <br />CH <br />I <br />T <br />E <br />C <br />T <br />S <br />, <br /> <br />I <br />N <br />C <br />. <br />© <br />C <br />O <br />P <br />Y <br />R <br />I <br />G <br />H <br />T <br />RE <br />V <br />I <br />S <br />I <br />O <br />N <br />S <br />No. C-32798 <br />HC <br />F <br />RADSEN <br />E <br />S <br />TAT <br />LCAIOF <br />E <br />ILC <br />A <br />ORNI <br />TC <br />ITEYENNY NG <br />DATE <br />RENEWAL <br />03-31-25 <br />1/2" = 1'-0" <br />A5.2 <br />EN <br />L <br />A <br />R <br />G <br />E <br />D <br /> <br />S <br />T <br />A <br />I <br />R <br /> <br />P <br />L <br />A <br />N <br />S <br />YC23005 <br />AN <br />C <br />E <br />N <br />A <br />Y <br /> <br />C <br />O <br />M <br />M <br />E <br />R <br />C <br />I <br />A <br />L <br /> <br />O <br />F <br />F <br />I <br />C <br />E <br />JAN 2024 <br />T.N. <br />21 <br />0 <br /> <br />W <br />. <br /> <br />1 <br />9 <br />T <br />H <br /> <br />S <br />T <br />R <br />E <br />E <br />T <br />, <br />SA <br />N <br />T <br />A <br /> <br />A <br />N <br />A <br /> <br />C <br />A <br /> <br />9 <br />2 <br />7 <br />0 <br />6 <br />1ST FLOOR STARICASE #1 2SCALE: <br />1/2" = 1'-0" <br />Da <br />t <br />e <br /> <br />D <br />e <br />s <br />c <br />r <br />i <br />p <br />t <br />i <br />o <br />n <br />2 <br />9 <br />/ <br />1 <br />6 <br />/ <br />2 <br />0 <br />2 <br />4 <br /> <br />3 <br />R <br />D <br /> <br />S <br />U <br />B <br />M <br />I <br />T <br />T <br />A <br />L <br />2ND FLOOR STAIRCASE #1 3SCALE: <br />1/2" = 1'-0" <br />1ST FLOOR STARICASE #2 7SCALE: <br />1/2" = 1'-0" <br />2ND FLOOR STAIRCASE #2 8SCALE: <br />1/2" = 1'-0" <br />STAIR GENERAL NOTES <br />1. REFER TO SHEET AD4 FOR STAIR DETAILS <br />2. SHOP DRAWINGS: THE CONTRACTOR SHALL PROVIDE SHOP DRAWINGS FOR <br />THE STEEL STAIRWAY, HANDRAILS AND GUARDS FOR REVIEW AND APPROVAL <br />PRIOR TO FABRICATION. <br />3. TREADS: ALL TREAD SURFACES SHALL BE SLIP RESISTANT. TREADS SHALL HAVE <br />SMOOTH, ROUNDED OR CHAMFERED EXPOSED EDGES AND NO ABRUPT EDGES <br />AT THE NOSING. <br />4. TREAD AND RISER DIMENSIONAL UNIFORMITY: STAIR TREADS AND RISERS SHALL <br />BE OF UNIFORM SIZE AND SHAPE. THE TOLERANCE BETWEEN THE LARGEST AND <br />SMALLEST RISER HEIGHT OR BETWEEN THE LARGEST AND SMALLEST TREAD <br />DEPTH SHALL NOT EXCEED 0.375 INCHES IN ANY FLIGHT OF STAIRS <br />5. TREAD PROFILE: THE RADIUS OF THE LEADING EDGE OF THE TREAD SHALL BE <br />NOT GREATER THAN 0.5 INCHES. BEVELING OF NOSING SHALL NOT EXCEED 0.5 <br />INCHES. RISERS SHALL BE SOLID AND VERTICAL OR SLOPED FROM THE <br />UNDERSIDE OF THE LEADING EDGE OF THE TREAD ABOVE AT AN ANGLE NOT <br />MORE THAN 30 DEGREES FROM THE VERTICAL. THE LEADING EDGE (NOSING) OF <br />TREADS SHALL PROJECT NOT MORE THAN 1.25 INCHES BEYOND THE TREAD <br />BELOW AND ALL PROJECTIONS OF THE LEADING EDGES SHALL BE UNIFORM <br />SIZE, INCLUDING THE LEADING EDGE OF THE FLOOR AT THE TOP OF A FLIGHT. <br />6. HANDRAIL GRASPABILITY: HANDRAILS WITH A CIRCULAR CROSS-SECTION SHALL <br />HAVE AN OUTSIDE DIAMETER OF AT LEAST 1.25 INCHES AND NOT GREATED <br />THAN 2 INCHES. IF THE HANDRAIL IS NOT CIRCULAR IT SHALL HAVE A <br />PERIMETER DIMENSION OF AT LEAST 4 INCHES AND NOT GREATER THAN 8.25 <br />INCHES WITH A MAX. CROSS-SECTION DIMENSION OF 2.25 INCHES. EDGES <br />SHALL HAVE A MIN. RADIUS OF 0.125 INCHES. <br />7. HANDRAIL CONTINUITY: HANDRAIL-GRIPPING SURFACES SHALL BE CONTINUOUS, <br />WITHOUT INTERRUPTION BY NEWEL POSTS OR OTHER OBSTRUCTIONS. <br />8. HANDRAIL EXTENSIONS: HANDRAILS SHALL RETURN TO THE WALL, GUARD OR <br />THE WALKING SURFACE OR SHALL BE CONTINUOUS TO THE HANDRAIL OF AN <br />ADJACENT STAIR FLIGHT. AT STAIRWAYS WHERE HANDRAILS ARE NOT <br />CONTINUOUS BETWEEN FLIGHTS, THE HANDRAILS SHALL EXTEND AT LEAST 12 <br />INCHES BEYOND THE TOP RISER AND 12 INCHES, PLUS THE TREAD DEPTH, <br />BEYOND THE BOTTOM RISER. WHERE THE STAIRS ARE CONTINUOUS FROM <br />LANDING TO LANDING, THE INNER RAIL SHALL BE CONTINUOUS AND NEED NOT <br />EXTEND OUT INTO THE LANDING. <br />9. EXIT ENCLOSURE OPENINGS: EXIT ENCLOSURE OPENING PROTECTION SHALL BE <br />IN ACCODANCE WITH IBC SECTION 716. OPENINGS IN EXIT ENCLOSURES OTHER <br />THAN UNPROTECTED EXTERIOR OPENINGS SHALL BE LIMITED TO THOSE <br />NECESSARY FOR EXIT ACCESS. <br />10. EXIT ENCLOSURE PENETRATIONS: PENETRATIONS INTO AND OPENINGS <br />THROUGH AN EXIT ENCLOSURE ARE PROHIBITED EXCEPT FOR REQUIRED EXIT <br />DOORS, SPRINKLER PIPING, STANDPIPES, ELECTRICAL RACEWAY FOR FIRE <br />DEPARTMENT COMMUNICATION SYSTEMS AND ELECTRICAL RACEWAY SERVING <br />THE EXIT ENCLOSURE. THERE SHALL BE NO PENETRATIONS OR COMMUNICATION <br />OPENINGS, WHETHER PROTECTED OR NOT, BETWEEN ADJACENT EXIT <br />ENCLOSURES. <br />11. STRIPING FOR VISUALLY IMPAIRED: INTERIOR STAIRWAYS SHALL HAVE THE <br />UPPER APPROACH AND LOWER TREAD MARKED BY A STRIPE PROVIDING CLEAR <br />VISUAL CONTRAST. THE STRIPE SHALL BE A MIN. OF 2 INCHES WIDE TO A MAX. <br />OF 4 INCHES WIDE PLACED PARALLEL TO, AND NOT MORE THAN 1 INCH FROM, <br />THE NOSE OF THE STEP OR UPPER APPROACH. THE STRIPE SHALL EXTEND THE <br />FULL WIDTH OF THE STEP OR UPPER APPROACH AND SHALL BE OF MATERIAL <br />THAT IS AT LEAST AS SLIP RESISTANT AS THE OTHER TREADS OF THE STAIR. A <br />PAINTED STRIPE SHALL BE ACCEPTABLE. <br />12. STAIRWAY ILLUMINATION: PROVIDE MIN. 1 FOOT-CANDLE AT ALL TREAD RUNS. <br />2 <br />2 <br />2 <br />2 <br />210 W 19th St <br />4/14/2025