09-9477 - Laserfiche WebLink

Browse Search

• SOILS AND FOUNDAAIIONS Ma nt load intensity and erosion characteristics of dope 1 805.42.3 Plain concrete f Ci Mated al concrete foe Of plain eo footings. The edge thickness 180 5.4Footi Light air to supporting of other char, Footings shall be designed an constructed in construction shall not be less that 8 inches Allowable bear -ing capacity of the soil is not arcades, and (203 mm) why ply on soil. Thal able b differential settlement is minimized. The minus Exception: For plain concrete footings Width of footings shall be 12 inches (305 mm) um Group R-3 occupancies. the Supposing tcd to be 6 inches (152 mm v �k that is permit- n ( ) D that the footing Does not extend beyood a distance Footings to areas with Thickness of the footing , , , n either sick of the u expansive soils shall be designed Wail. In accordance with the provisions of Section 1 805.8. 1805.4.2.4 Placement of concrete. Concrete footings 1 8 05.4./1.1 Deli loads F Shall not be placed through wa►.r unless a trunk or other Bn , ootings shall be designed for method approved by the build' , icial is the most unfavorable effects due to the combinations of building tests Where loads specified in Section 1605.3. Thc dud load shall in- placed under a in the s he wet toff shall bed presence o the e mini - 8h foundations„ footings end overlying deposited approved means to le C ur b l e n t fill. Reduced live loads, as specified In Section 1607.9. mum segregation of the mix and negligible nubttJemtx 01 Arc pitted to be used in designing footings, the water. 4 1805. . I Z V brato Li80 4. ry 1 oads. Where machinery opera- 1805.4.2.5 Protection of other vibrations art transmitted through the . Cg de footings siting foundation, consideration shall be given in the footing shall be protected l from freezing ve es s th e g depositing and for a design to prevent detrimental disturbances of the soil. Na period of not less than five days t ept sitets d Water shall 18L15.4.2 be allowed to flow �8h the d depo e�acrconcrete. Con a footings, The design, materials and coo- struction of Concrete footings sh Permitted to all exmply with Sections ermitt Forming g concrete. Concrete footings are 1 8055.4.2, through 1805.4.2.6 and the provisions of Ch east against the earth where, in the opin- ter .42. Chap- ion of the building official, soil conditions do not forming, Where forming b required, h shall be In acccorr require Exception: Where a specific design u not provided, con- dance with er 6 of AC] 318. Crete footings supporting wall of light-frame Crete are gh Construe- 1805.4.3 Masonry-unit designed footings. The design, materials tion Table a per 2 and construe of masonry-unit footings with Sections 1805.4.3.1 and 1805,4,3. and pro 1805.42 Concrete .1 Of Chapter 21. to provisions Shall have a i5 strength. Connect in footings Seas than a sp compressive strength (f c ) of not Pounds per square inch (psi)(17 237 kPa) Where s specific design u not provided, me At 28 days. sorry -unit footings supp orting walls of light -frame con- struction are permitted to b designed in accordance with 1805,4.2.2 Reserved. Table 1805.41. 1805.43.1 Dimensions, laid in Masonry-unit footing shall bc Type M or S mortar complying with Section • FOOTINGS SUPPORTING W TABLE 1805.4.2 ALLS OF LIGHT -FRAM CONSTRUCTION&b.c.d NUMBER OF FLOORS WIDTH OF THICKNESS OF SUPPORTED BY THE FOOTINGS* FOOTINGS FOOTING (inches) (inches) 6 3 6 Fof S 1' 1 inch = 25.4 mm, 1 foot e 8 304.8 tom, a Depth of footings shall bc in accordance acconian with Section 1805.2. The ground under the floor is permitted to be excavated to c i the elevation of the top of the footing the wid s table and to be supported by isolated footings. The footing d For wid a ss off gs shall be spaced not more than 6 Feet on width and lug shall be twin oundatioe walls, see Section 1805.5. c Footings are Pcrntttd to a roof in ' Shall be as addition to the stipulated number of floors, F f Plain required for supporting ooc floor. Footings supporting root only concrete footings for Group R - occupancies are permitted to be 6 inches thick