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HomeMy WebLinkAbout0723.01 7Q; I low can I interpret Table R'210, as it pertains to looting and fUl111dali011 requirements for detached garages? Aut I incur- recl in assuming that the footings mast extend to the froslline in all cases? A; In most cases, code requirements for footings and founda- tions of accessory structures, such as garages, are the sante as for one or two.family dwellings. These requirements are (mind in Section 8-303, Footings (page IJ of the huh(m 0m, uml Tiro hnnil), Divelling Code), and the accompanying Figure No. R-303 ( page 15 of the amendments to the code). Figures I,'2, and 3 ;Ire acceptable designs front Figure No. R-303, showing mininuut size and dimensions. 1 & 2 FAMILY DWELLING CODE INSPECTIONL1ST Note that it is required that the bottom of the footing in cacti case must extend to the froslline, which can be determined by referring to Figure No. R-2022, on page 11 of the amendments to the code. I lowever, according to Section R-2111.4, Garages, Carports, and Accessory Structures (page ti of Ilse atnen(lments to the code), and the accompanying Table No. R-210 ( page 12 of the aneml- menls ), detached garages and accessory buildings which are separated from the residence by at least G feet, and are not over 721 square feet in floor area, may be constructed using a mono- jilhic footing and slab system designed as shown in Figures 4 and 5. Note that in situations meeting the conditions of til-(timi R-210.4 and "fable No. R-210, and onlywhen a titonolithic fuuting and sl,Ib system is used as illustrated, the bottom of the footing need not extend to tl)e frustline. In a monolithic fooling and slab system, there must be no separation between the footing and the concrete slab floor, and no break in the footing itself. In other words, IhD footing must completely circumscribe the slab, with no open sides. According to the footnote al the btiltum of Table No. R-210, slab reinforcement in tiro forst of welded wire fabric orequivalent is required, in most cases. Also note Ihat porlable stodge buildings 120 square feel or less in floor area are not required to have footings or foundations. Footings and foundations meeting the requirements outlined above Hurst be lrovided.fur all buildings exceeding 120 square feet in floor area. ' IFOR TREATED PLATE i AND SIDING REdUIREMENTS SEE RJOe) D !k U FINISHED CONCRETE FLOIATION 1 GRADE SIIE PREI'M AiIUN, FILL AND RASE AS PER R 603 AND FIG FI -30J FINISHED GRADE f 18.. 12" ).y Fig 5 ' . 15' DOLTS 8" o4 W' 8" DOLTS @1 8' oic GROUTED IN PLACE r/ I '4]—'A" . 8" DOLTS 8' O/c MIN 1 12" MAX FROM CORNER FINISHED GRADE - J'." FAIN FINISHED 1' L-- FINISHED GRADE - GRADE CONC MASONRY SITE PRFPARATION. FILL. AND BASE AS PER t [7 SECTIONS It 603 2. ( G Q R-603 2 1. AND R-603 2 2 E CONCRETE p FROSTIINE FROSTIINE FROSTLINE "• t !AC 191. NO/ R-202 -*—UNDISTURREO NATURAL � GRAUE OR ' UNDISTURBED NATURAL -= -T- J I • 1 story ENGINEEIIF.D FILL - r 12" 1 Gory GIIADE OR L.� 12' - t -dory 2 story t5' • 2 slmy ENGINEERED FILL IS' - 2 -stay 3 story 10 . 3 story 18" - 3•510'Y hop I Frg 2 F9.3 I lowever, according to Section R-2111.4, Garages, Carports, and Accessory Structures (page ti of Ilse atnen(lments to the code), and the accompanying Table No. R-210 ( page 12 of the aneml- menls ), detached garages and accessory buildings which are separated from the residence by at least G feet, and are not over 721 square feet in floor area, may be constructed using a mono- jilhic footing and slab system designed as shown in Figures 4 and 5. Note that in situations meeting the conditions of til-(timi R-210.4 and "fable No. R-210, and onlywhen a titonolithic fuuting and sl,Ib system is used as illustrated, the bottom of the footing need not extend to tl)e frustline. In a monolithic fooling and slab system, there must be no separation between the footing and the concrete slab floor, and no break in the footing itself. In other words, IhD footing must completely circumscribe the slab, with no open sides. According to the footnote al the btiltum of Table No. R-210, slab reinforcement in tiro forst of welded wire fabric orequivalent is required, in most cases. Also note Ihat porlable stodge buildings 120 square feel or less in floor area are not required to have footings or foundations. Footings and foundations meeting the requirements outlined above Hurst be lrovided.fur all buildings exceeding 120 square feet in floor area. ' IFOR TREATED PLATE i AND SIDING REdUIREMENTS SEE RJOe) D !k U FINISHED CONCRETE FLOIATION 1 GRADE SIIE PREI'M AiIUN, FILL AND RASE AS PER R 603 AND FIG FI -30J FINISHED GRADE f 18.. 12" ).y Fig 5