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The grade away from walls shall fell a minimum of 6 lines where the fall will De a minimum Of 6 in. regardless of the horizontal distance Basement wallS, foundation ~alls, porches, carport slabs and steps exposed to the weather, and garage floor slabs shall nave a minimum specified compressive strength of 3000. Table No. R-302.2 Footings sections: l~ ~n. wide 1 story~ 15 in.- 2 s~ory, 18 in 3 story. Foot~ngs ex,end not less ~han below the finish natural grade. R~303 FoUndation walls shall extend at leas~ 8 in. above ~he finished grade to %he founds~ tion aU all points. R-30402 Masonry and concrete foundation walls shall be constructed uslng the following criteria: all concrete or masonry founda- tions. Perforated pipe or other approved eye%ems or materials shall be installed at or below %be area to be protecte~ and shall discharge by gravity or mechanical means into an approved drainag~ system. R~ 305,1 rx~erior foundation walls of · asenry construo~ien enclosing D~saments shall be dampproofed. Foundation walls of habitable rooms located below grade shall be waterproofed, R-306.1 The minimum net area of venti- lation openings shall be not less than 1 sq. ft. for each 150 sq. ft. of crawl space area. Openings shall be within 3 fi, of each corner of said building, 24 in, shall be provided to the underfloor space. ~-309.2 The under floor grade shall be cleaned of all vegetation and organic materials. R-309.3 11, Bathrooms shall De provided with artificial l~gnt and a~ approved mechanical vent~l~- t ion system capable of producing a change o~ a~r every 12 minutes or a window of not less than 3 sq, ft., one-half of which mus~ De operabl~. R-205,3 ~y sleeping room shall have an exterior door or not less than 5,7 sq. ft. of openable The min. net clear he~gh~ s'hall be 24 The min. net clear width shall be 20 The finished sill window · opening inches, opening inches. height shall be not more then 44 inches, 13. All habitable zooms shall be provided with aggregate glazing area of not less than $ per~ent of the floor area of such rooms, One-half of the required area of glazing shall be op~nable. 14. Where bottom of glass light within 18 in. of floor and all glass doors and wall panels of bathtub and shower enclosures, must be of laminated, tempered or wire glass. R~208.4 15. Openings between the garage and residence shall be equipped with solid wood doors not less than 1 3/8 in. in thickness or equivalent 209,1 16. The garage shall be completely separated from the residence and its attic area by means of 1/2 in , gypsum board or ~quivalen= applied to the garage side, R-209.2 Not less ~han on~ exit shall be provided from each dwelling unit. The required e×~ door shall be a side-hinged door and not less than 3 ft w~dth and 6 ft 8 in. in ~irways shall not be less than 3 ft in clear width~ and the headroom s,hall be 6 ft 8 In mln,, rise 8 1/4 max., and run of 9 in. min, R~213.1 ndrails having min. and m~ax~ heights of 30 in, and 34 ~n, respectively, measured- vertically from the no$in~ of the treads, shall be provided on at least one side of stairways of three or more rises and shall be continuous the full length of the stairs and shall extend 6 inches beyond the top and bottom rises. Ends shall be returned or shall terminate in newel post or safety terminals. R-