10-10043 - Laserfiche WebLink

Browse Search

SOILS AND FOUNDAA11ONS Gradient, load intensity and erasion characteristi of dope 1 805.42.3 Plain concrete footings. Material Of plain concrete foe • The edge thickness footings supporting ng N' 1s of other than l 805.4Footings shall be designed an constructed in Light -same construction shall not be less Allowable 8 inches bearing capacity of the soil is not exceeded, and (2 03 mm) where placed on soil. Thai differential settlement is minimized. The minimum Exception: For plan conceded a thickness s supporting Width of footings shall be 12 inches (305 mm) Group R' 3 occupancies, the odt;p hicnes red to be 6 inches 152 mm . rovidcd 's Pormn- Does tot extend beyond a distance the footing Thickness of the footing ,,ii s id e e greater that Footings in areas with expansive soils shall be designed In accordance with the provisions of Section 1 805.8, Wall. 1805.4,2.4 Placement of concrete. Concrete footings 1 805.4./1,1 Design loads, Footings steal] be Shall not bc placed through waiP.r unless a trcmie or other the moat wufnvot,tbk effects due to the combinations of for method approved by the building iH5cia1 is aced, Where loads specified in Section 1605.3. The dead load shall in- shall bc deposi ted plod under j in y P v j means t otwatto ensure mini ek the clads the weight of foundations„ footings and overlying CODS Are Reduced live loads, as specified In Section 1607.9, mum he wafter woon n by of the a mix mix ix an nd negligible turbulence of Permitted to be used in designing footings. 4.12 1805. Vibratory o ratry oads. Whe loads. machin 180 4. other Vibratory l arc erY opera 1805.4.2.5 Protection of ooricretc• transmitted through the Cg depositing footings foundation, consideration shall be given in the footing s be protected Trom freezing during depositing and for design to prevent detrimental dishubaoces of the soil. period to of not less than five days thereafter W shall Not be allowed to flow through the deposit al coacneu. 1805.42 Concrete footings, The design, materials and cm- siruc0on of concrete foetid 1805.4.2.6 Fermin of concrete. Concrete footings are 18uction 1 through 18 gs shall comply with Sections permitted to be east ter 1805.4205.4 2.6 and the provisions of Ch against the earth where, in the opin• °p' ion of the building official, soil conditions do not require forming,. Where forming is required, h shall be in Exception: Where a dance with "' Crete tiotin specific design u not provided, con- Chapter 6 of ACT 318. footings supporting walls of light -frame construe- 1805.4,3 M lion arc permitted ) f masonry -unit footings to be designed in accordance with Masonry footings. Thc degigs, shall comply Table 1 805.4,2 and oorutnuction o with Sections 1805,4.3.1 and 1805.4,3. and cc vj 5 2.1 Of Chapter 21. 180.4 provisions 180 have a specified Concrete strength. Coocrete in footings Less than 2,500 pounds per °treugth (f c) of not ) sonny - unit per square inch (psi)(17 237 kPa Exception: footings s Where a supporting design w a l s of lig u not ht - con- Al 28 days. it uporti walls on struction arc permitted to b designed in accordance with 1805.4_22 Reserved. Table 1805.4.2. 1805.4.3.1 Dimensions, Masonry -unit footing shall bc laid in 'type M or S mortar complying with Section • FOOTINGS SUPPORTING WALLS OF LIGHT - FRAM CONSTRUCTION& NUMBER OF FLOORS WIDTH OF THICKNESS OF SPORTED BY THE FOOTINGS' FOOTINGS FOOT (inches) (inches) 6 6 3 For S 1 ' 1 inch = 8 25.4 min, I foot a 344.8 reed. a. Depth of footings shall be in accordance b The ground floor is with Section 1805.2. ound under the b T e gr permitted to be excavated to the elevation of the top of the footing the widths table are pamitted end to shall be � by isolated footings. The footing width and length For thickness of foundation walls, see Section 1805.5. not more than 6 Feet on center. `�� shall be twice e Shat arc permitted fo floor addition to the stipulated number of Boaz, Footings supporting root on') Shall be to f Plain concrete footings for Group R -3 occupancies arc permitted to be 6 inches thick