09-9909 - Laserfiche WebLink

Browse Search

SOILS AND FOUNDAA11ONS Gradient, load inrrncity and erasion characteristics of slope 1805. . 42.3 Plain concrete footings. on. thickness Of plain concrete f ood supporting walls of other than 18 . 4 Foolings shall be designed an constructed in Light -frame construction shall not be less that 18 ow . 4 F beanie 8 inches 05 (203 mm B capacity of the soil is not exceeded, and ) planed on so Theo differs settlement is minimized. The minimum Exception: For plate concrete footings succoring Width of footings shall be 12 inches (305 The Group R-3 oo ancies. the tcd to be 6 edge i ed that p the footing tnches (152 mm),provided tat n g Does not extend beyond a distsncc greater that the Footings in areas with expansive soils shall be designed al of the footing �„ either side of tlx supported Wall. In accordance with the provisions of Section 1805.8. 1805.4.2.4 Placement of axncxtite. Coo footings 18 05.4./1.1 Dtsi lo F Shall not be placed through watt: unless a tremie or other 8° , 0otings shall k designed for method approved by the build' )fl5cial i s the most rtnfavorabk effects due to the combinations of building used Where l oads specified in Section 1605.3. The dead load shall in- placed under or in the presence of watt„ the clued the weight of foundations„ footings and overlying shall be deposited by approved means to crezr fill. Reduced live loads, as specified hi Section 1607.9. mum segregation of the mix and negligible turbulence of Arc pitted to be used in designing footings, the 1805 4, 12 Vibratory loads. l Where machinery 180 4. other vibr l are pwi c � � the 1805.4.2.5 Protection of concrete. Conan fangs foundation, consideration shall be given in the footing s be protected from freezing during depositing and for design to prevent detrimental disturbances of the soil. Not o t net less than five gets thcrpo Water shall t b be aUo e not to flow through the deposisi ted concrete. 1 805.42 Concrete footings, The design, materials and coo- s ru on of concrete footings shall comply with Sections ermined t be east g nst t te. Concrete f in th are 1805.42.1 through 1805.42.6 and the provisions of Ch Permitted to t against the earth where. in t opin- ter 1805.4 2. �' ion of the building eas lding official, soil conditions do oa require forming. What forming b required, h shall be in accor- Exception: Where a specific design is not provided, corn_ dares with Chapter 6 of ACl 318. Crete footings supporting walls of light -Same eanatnc non arc permitted to be designed in accordance with and cons Mason of footings The de materials Table 1805.4 .2 and corutruetian of masmry -unit footings shall comply with Sections 1805.4.3.1 and 1805.4.3.2. and the provisions 1 2.1 Of Chapter 21. 805.4 1 8 a to strength. Concrete in footings Shall have Less than a specified pounds .fie compressive strength (f c ) of not Per square inch (psi)(] 7 237 kPa) so J y - it fo otin a spe gs supporting g w s of light-frame u not con - ens. Al 28 days. my -unit supporting wall Struc'tion arc permitted to b designed in accordance with 1 805.412 Reserved. Table 1805.4/. 1 805.43.1 Dimensions laid in ' �y -omit footing shall be Type M or S mortar complying with Section • FOOTINGS SUPPORTING W TABLE 1805.4.2 ALLS OF LIGHT -FRAME CONSTRUCT1ON&b.c.d NUMBER OF FLOORS WIDTH OF THICKNESS OF SUPPORTED BY THE FOOTINGS' FOOTINGS FOOTING (inches) (inches) 6 6 3 IIIIIIIIIIgIIIIIIIIIIIIIIIIIIIIIIIIIII For S I 1 inch = 25.4 mm, 1 foot - 304.8 nun. a Depth of footings shall be in accordance b The ground under the Boor is �� Sestina 18052. c permitted to be excavated to the elevation of the top of the footing. the do table apd �� to be supported by isolated footings. Ss shall be spaced not more th footing c width and length shall be twin d. For thickness of foundation walls, see Section 1805.5. c Footings art � support fl In oor. on to the stipulated number of doors, Footings supporting root onh Shall be as f Plain concrete footings for Group R -3 occupancies are permitted to be 6 inches thick