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Federal Register / Vol.66,No.44 / Wednesday,March 6,1991/Rules and Regulations 9607 Requirement 4. Accessible root*brio and through the (5) Exterior deck,patio,or balcony surfaces are no more than itegoi covered dwelling unit. 1/2 inch below the floor level of the interior of the dwelling unit,unless they are constructed of impervious Section 100.205(c)(3Xl)provides that all covered multifa- material such a concrete,brick or flagstone.In such case, mily dwellings with a building entrance on an aceeatble the surface is no more than inches below the floor level route shall be designed and constructed in such a manner of the interior of the dwelling unit,or lower if required by that all premises within covered multifamily dwelling units local building code. contain an accessible route into and through the coveted dwelling unit. (6) At the primary entry door to dwelling units with direct exterior amen,outside landing surfaces constructed of Guideline impervious materials such as concrete,brick or flagstone. are no molt than 1/2 inch below the floor level of the Accessible routes into and through dwelling units would interiat#the dwelling unit.The finished surface ofthis meet section 100.205(cx3x0 if: area that is located immediately outside the entry may be sloped,uptolm inch per foot(12inches),fordninege. (1) Aminimum clear width of36 inches isprovided. Requhemeot 5. light switches,electrical outlets.thereto. (2) In single-story dwelling units,changes in level within the seats and ether environmental controls In accessible Inca- dwelling unit with heights between 1/4 inch and 1/2 inch Ileem arc beveled with a slope no greaterthan 1:2.Except for design features.such as a loft oran area on a different level Section 100.205(cx3)(d)requires that all covered multih- within.room(e.g.,asunken living room),changes in mily dwellings with a building eouance on an accessible levelgreaterihan 1/2 inch are ampedorhaveotherme*ns tout.shag bedeaiphd and constructed in such a manner of access.Where a single story dwelling unit hesspecial that all premises within covered multifamily dwelling units design features,all portions of the single-story unit,except contain light switches,electric outlets,thermostats,and the loft cite sunkenornised an.,ue on in accessible other environmental controls in accessible locations. once:and Gutd gas (a) In single-story dwelling units with lofts,all spans other than the loft are on an accessible route. Light awitch*;dearialautep,theuoa and tatsolheen- vironmental�� controls would meet srdon 100.205(cx3)(fi) (r) Design features such as sunken or raised frontless' ifoperablepartsofthe controls are locatdno higher than areas do not interrupt the accessible route through the 48inches,and no lower than 15 inches,above the floor.If remainder of the dwelling unit. the teach is over an obmhtxioo(for example,an overhang- i ng sheif)between 20 and 25 inches in depth,the maxi- (3) In multistory dwelling unity In buildings with elevators,the mum height is reduced to 44 inches foe forward approach; story of the unit that isurvedby the building elevator(a) or 46 inches for side approach,provided the obstruction is the primary entry to the unit,(b)complies with Require- (fornample,akitcben but cabinet)is no more than 24 menu 2through 7 with respect to the rooms located on the inches in depth. Ob.tntrioos should not extend more than any/accessible floor;and Mountains a bathroom or 25 lnchesfrom the wall beneath'control.(SeeFig.2.) powder room which complies with Requirement 7. (Note: multistory dwelling units in non-elevator buildings am not Ago covered dwelling unite because,in such cases,there is no Controls oromlets that do not satisfy these specifications ground floor unit.) are acceptable provided that comparable controls or outlets (is,that perform the same functions)are provided within (4) Except a provided in paragraphs(5)and(6)below, the same area and are accessible,in accordance with this thresholds at exterior doors,including sliding door tracts, guideline for Requitement 5. are no higher than 3/41nch.Thresholds and changesin level'these loatiaaarebeveledwithaslopenogreater than 1:2.