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The grade a~ay from foundation <br />walls shall fall a m~n~mum of <br />2n. wlthl~ the first 10 <br />except as restricted by lot <br />llnes where the fall <br />minimum of 6 in. regardless of <br />the her ~ zonta 1 ~lstance <br />available. <br /> <br />Base0~ent walls, foundation <br /> <br />and steps exposed to <br />,~eather, and garage floor slabs <br />~hall ha'ye a minimum specified <br />compressive strength of 3000. <br />Table No. R-302.2 <br /> <br />Foo~ings sectlons. 12 in, wide <br />- t story; 15 in.- 2 story, 18 <br />in. $ story. Footings/~hall <br />extend not less than 18 in. <br />below the finish natural grade. <br />R-303 <br /> <br />Foundation walls shall extend <br />at least 8 in . above the <br />finished grade to the founda~ <br />tion a5 all points. R-304.2 <br /> <br />Masonry and concrete foundation <br />walls shall be constructed <br />osing the following criteria: <br />R~304.3 <br /> <br />Drains shall De provided around <br />all concrete or masonry founda- <br />tions. Perforated pipe or other <br />approved systems or materials <br />shall be installed at or below <br />5~e area to be protected and <br />shall discharge by gravity or <br />mechanical means into an <br />approved dralnage system. R~ <br />305.1 <br /> <br />Exterlor foundatlo~ walls of <br />masonry construction enclosing <br />basements shall be dampproofed, <br />~oundation walls of habitable <br />rooms located below grade shall <br />~e waterproofed. R-306.1 <br /> <br />the minimum net area of venti- <br />!etlon openings shall be not <br />less than 1 sq. ft. for each <br />150 sq. ft, of crawl space <br />area, Openings shall be w~th~n <br />3 ft. of each corner of said <br />building. <br /> <br />An access crawl hole 18 in. by <br />24 Ln, shall be provided to the <br />~nderfloor space. R-309.2 <br /> <br />The under floor grade shall be <br />cleaned of all vegetation and <br />organic materials, R-309.3 <br /> <br />11 <br /> <br />Bathrooms shall be provided <br />with artificial l~ght and an <br />approved mechanical ventila- <br />tion system capable of <br />producing a change of air <br />every 12 m~nutes or a window <br />of not less than ~ sq, ft., <br />one-half of which must De <br />operable, R-203.3 <br /> <br />5very sleeping room st~all nave <br />an exterior door or not less <br />than 5.7 sq, ft. of openaole <br />w~ndow. The m~n. net clear <br />opening height shall be 24 <br />inches. The min. net clear <br />opening width shall be 20 <br />inche~, The finished <br />height shall be not more then <br />44 inches. <br /> <br />13, <br /> <br />Ail habitable rooms shall be <br />provided with aggregate <br />glazing area of not less than <br />8 percent of the floor area o~ <br />such rooms. One-half of the <br />required area of glazing shall <br />be openable. <br /> <br />14. <br /> <br />Where bottom of glass light is <br />within 18 in. of floor and all <br />glass doors and wall panels of <br />bathtub and shower enclosures, <br />must be of laminated, tempered <br />or wire glass. R-208.4 <br /> <br />15. <br /> <br />Openings between the garage <br />and res ~dence shall be <br />equipped with solzd wood doors <br />not less than 1 3/8 in. in <br />~hickness or equivalent <br />209.1 <br /> <br />16. The garage shall De completely <br /> separated from the residence <br /> and its attic area by means of <br /> 1/~ in . gypsum board or <br /> equivalent applled to the <br /> garage side. ~-209.2 <br /> <br />17. Not less than one exit shall <br /> be provided from each dwelling <br /> unit, The required exit door <br /> shall be a side-hinged door <br /> and not less than 3 ft in <br /> width and 6 ft ~ in. in bt. R- <br /> 211 <br /> <br />Stairways shall not be less <br />than 3 ft in clear width, and <br />the headroom shall be 6 ft 8 <br />~n min., rise 8 1/4 max,, and <br />run of 9 in. min. R-213.1 <br /> <br />Handrails having min. and max. <br />heights of 30 in. and 34 in. <br />respect lvely, measured- <br />vertically from the nosing of <br />the treads, shall be provided <br />on at least one side of <br />stairways of three or more <br />rises and shall be continuous <br />the full length of the stairs <br />and shall extend 6 inches <br />beyond the top and bottom <br />rises. Ends shall be returned <br />or shall terminate in newel <br />poet or safety terminals. R- <br />21~.] <br /> <br /> <br />