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The grade away from foundation <br />walls shall fall a minimum of 6 <br />in. within the first 10 ft., <br />except as restricted by lot <br />lines where the fall will be a <br />minimum of 6 in. regardless of <br />the horizontal distance <br />available. R-301.3 <br /> <br />Basement walls, foundation <br />walls, porches, carport slabs <br />and steps exposed to the <br />weather, and garage floor slabs <br />shall have a minimum specified <br />compressive strength of 3000. <br />Table No. R-302.2 <br /> <br />Footings sections: 12 in. wide <br />- 1 story; 15 in.- 2 story, 18 <br />~n . 3 story . Footings shall <br /> <br />extend not less than 18 <br />below the fznish natural grade <br />R-303 <br /> <br />Foundation walls shall extend <br /> <br />at least 8 in . above the <br />finished grade to the founda- <br />tion at all points. R-304.2 <br /> <br />Masonry and concrete foundation <br />walls shall be constructed <br />using the following criteria: <br /> <br />R-304.3 <br /> <br />Drains shall be provided around <br />all concrete or masonry founda- <br />tions. Perforated pipe or other <br />approved systems or materials <br />shall be 2nstalled at or below <br />the area to be protected and <br />shall discharge by gravity or <br />mechanical means into an <br />approved drainage system. R- <br />305.1 <br /> <br />Exterior foundation walls of <br />masonry construction enclos2ng <br />basements shall be dampproofed. <br />Foundation walls of habitable <br />rooms located below grade shall <br />be waterproofed. R-306.1 <br /> <br />8. The minimum net area of venti- <br /> lation openings shall be not <br /> less than 1 sq. ft. for each <br /> 150 sq. ft. of crawl space <br /> area. Openings shall be within <br /> 3 ft. of each corner of said <br /> building. <br /> <br />9. An access crawl hole 18 in. by <br /> 24 in. shall be provided to the <br /> underfloor space. R-309.2 <br /> <br />The under floor grade shall De <br />cleaned of all vegetation and <br />organic materials. R-309.3 <br /> <br />11. <br /> <br />12. <br /> <br />13. <br /> <br />14. <br /> <br />15. <br /> <br />16. <br /> <br />18. <br /> <br />19. <br /> <br />Bathrooms shall be provided <br />with artificial light and an <br />approved mechanical ventila- <br />tion system capable of <br />producing a change of air <br />every 12 minutes or a window <br />of not less than 3 sq. ft., <br />one-half of which must be <br />operable. R-203.3 <br /> <br />Every sleeping room shall have <br />an exterior door or not less <br />than 5.7 sq. ft. of openable <br />window. The m~n. net clear <br />opening height shall be 24 <br />inches. The min. net clear <br />opening width shall be 20 <br />inches. The finished s~ll <br />height shall be not more then <br />44 inches. R-210.2 <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 of <br />such rooms. One-half of %he <br />required area of glazing shall <br />be openable. <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 />Openings between the garage <br />and residence shall be <br />equipped with solid wood doors <br />not less than 1 3/8 in. in <br />thickness or equivalent R- <br />209.1 <br /> <br />The garage shall be completely <br />separated from the residence <br />and its attic area by means of <br />1/2 in. gypsum board or <br />equivalent applied to the <br />garage side. R-209.2 <br /> <br />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 8 in. in hr. 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 />in 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 />respectively, 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 ncwel <br />post or safety terminals. R- <br />214.1 <br /> <br /> <br />