2817 RUCKER AVE 2018-01-02 MF Import

MEANS OF EORESS 3. Aisle st�tirs in asscmbly scating an�as wherc the stair 10U9.3J PrufilaTheradiusofcurvawrc unhe leadingedge pitch or slnpc is mt,for sightlinc rcuxons,by the slo�x o(thc irr.�d shall bc not grcatcr thun O.S inch (12.7 mm). uf the adjacem seating :uca in accorclance with Sec- Beveling of nusings shall no� exceui 0.5 iuch(12.7 mm). tiun 1025.1 I?. Riscrs shall tx sulid anJ vertical or sloped from the under- 4. In Group R-3 occupuncics; within dwclling units in s��e of the Ieading edge o(ihe tread above at:m angle not Group R-2 occup;mcies;und in Group U cecupancies morr.than 30 degrces(0.52 rrd)(rom the venical.The le•d- lhal are aceessory to a Gmup R-3 ixcupancy ur accer ing edge(�nosiug.)ol'inads shall project noi more than L_S sory to individual dwelling unils in Group f2-2 ixcu- inches(3_mn0 beyond the tread txxlow und:�II projeclions pancics; the muximum riser height xhall be 7,75 uflhe leading edgez shall bc of unil'unn size,including the inches(197 nun):lhe minimum lrcad depth shall � Ieading edge uf'tl�e tluor at Ihe lop af a�ligh�. l0inches(2S4mm);�hcmininwmwinderveaddepth Exccptions: xt lhe walk line shall lx 10 inches(25d mnt);anJ thc �, Sulid risen urc not reyuired tix stairways that are minimum windcr tread dcpth shall bc G inchcs (152 mm).A nosing not Icss than 0.75 inch(I9.1 nmq but not reyuired tu eomply wilh Sectiun I W73,pro- not more than 1.25 inches(32 mm)sh�ll lx provided vided that the u�xning txtwecn treuds Jces no� on stainvays wiih sulid risers wherc the tread depUi is �nnit�he pussugc of a sphere wiUi a diumeterof 4 less thrn I 1 inchcs(279 mm). inchcs(10_mm). I 5. SecdicSection3403.4fiirthereplacememofexisting �• Solid risers aro not rcyuircd (ur �xcupancics in stairways. �. ._Gmup 1-3. 1009.3.1Winderlrcads.Windcrtmadsarcnotpenni«cdin ��y'QSWinvuylandin�,s.7'hercshallbeatliwrurlandingat means of egrcss stainvays exccpt wi0iin a dwclling unit. � ��c tup ;uid lwuum of each stairway. The widih of Iendings '1t � shall nut bc lexs than the width uf xwirways tliey serve.Eve.ry Exceptiuns: Imiding shall have a minimutn Jimenxion nteasumd in the \„� '' dircction o( va��el equal io the width of the stairway. Such nY" L CurveJ stairways in a�:curJancc with Seciion ', �imension need not excced 48 inches (1219 mm) wherc the q�� IIX�.7. �pi`ay has a straight run. I�q� � ! - 2. Spiral stuirways in accordancc with Seclion Excc�iOriS:- . ."'` . ' •�� 10(�.8. _ _. � .. "�.V-��._.��-�-�-. L Aisle stairs complying with Seclion 1025. �' 0093.2 Dimensionel uniformity.Stair trcads and riscrs � i'� h x� shall be o(unifonn sirc and shaEx:.The toler.mce betwecn '-• D�wrs u�xning onlo a landing shall not reduce the `� ��,� Ihe largest and smallest riser height ur bctween the lary;est lunding to Iess than one-half the reyuircd widlh. and sm�illest tread depth shall no� exmed 0.375 inch (9.5 , �'�'hen fully open,the duur shall not project more lhan 1��, \mm)in any tlight of stairs''Ric�g'Rat�t tVMdCr trcaddepth'� ��»�hes(178 mm)into a landing. at1N@ 12-indi(305 inm)w�ulk Iinc ai0iin uny flight of stain 10119.5 Steirway construclion.All st;iinvuyx sh�ll be built of shall not excecd the smallest by morc dian 0375 iach(9.5 materials cunsisteN with the types Exnuitted (ur Uie typ� of.:, ��) , mtn)measurcd al a right angle io the�rcad's Ieading eJga consWc}ioR,gf tUc:bujWiug.�y�c��t t; wood ha71�[ails shall� 9�I�j F.xceptions: '�p��tied Ibr all types of constrticuon.^�" I. Nonunifomi riser dimensionti of aisle stairs com- ��•5.1 Sfai�Hay walking sudace.The walking surface �'�� / of vcads and IanJings af a st•rinvay shall not be sloped � plying with Scctiun 1025.1 L2. steeper thun onc unit vcrtical in 4K units horizontal(2-per- 2. ConsistenUy shaped winden, cumplying with cent slope) in any dircction. Stuinvay tnads and landings Section Ib(W.3,differing 1'mm rcctangul;v ueaJs shall have a solid sudace. Finish floor suduces shall be in the same stairway�ighL su urcly att�ched. Where Uie bottum ur top riser adjoins a sloping public Exeeptlon:ln Group F,H and S occupancies,other than way,wulkway or driveway having an established grade and areas of parking swcwres accessible w the public,open- serving as a landing,the buuom or top riscr is pemiiued iu ings in treads and IunJings shall not he prohibited pro- be reduced alung the slope to less than 4 inches(102 mm)in vided a sphere with a diameterof 1.125 inches(29 mm) height,with the variatiun in height of the bouom or top riser cannot pass through the opening. not to exceed one uni� venical in 12 units horiwntal (8-percent slope)o(stuirway width.The nosings or leading 10119.5.2 Outdour condilfons.Outdcwr st:�irways and out- edge,u(iRadsatsuchnonunifunnhcightrisenshallhavca duurappruarhestustairwaysshallbedesignedsothatwater distinctive murking stripe,di(fercnt (rom any other nusing "'��I not accwnutate un walking sudaces. _._._ marking provided on dic stair Ilight.The distinctive murk- 1009.5.3Enclosu�esunderstalrwrys.Thewallsendsotfits ing stripe shall be visible in descem o(Ihe stair anJ shall ' within enclosed usnble spaces under enclosed and unen- i have a slip-rcsistant surface. Marking stripes shall have a � clused swirw:�ys shall be protec�ed by bhuur firc-resis- width o(at least I inch(25 mm)but not morc thun 2 inches tance-rated conswcuon or�he fire-resistance raung of the ' (51 mm). stainvay enclosure, whichever is gneatec Access to the ! 40081NTERNATIONALBUILDINGCODE� ^�,.. _ ^_ _ _ ... .-. — � 7101 �I��.