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GEO-ETKA, INC. <br /> Job No: F-12136-24 <br />5 <br />RECOMMENDATIONS <br /> <br />Foundation Design <br /> <br />Continuous footings, isolated pad footings or a combination of both may be utilized for <br />the design of the foundation to support the proposed structures. The project engineer <br />must comply with the City’s minimum requirements when they exceed any part of this <br />report. <br />. <br />Bearing Value <br /> <br />A bearing value of 1,500 p.s.f. may be used. The footings should be at least 12 inches <br />wide and a minimum of 12 inches below the lowest adjacent finish grade resting on a <br />pad of compacted soil that is 24 inches thick. <br /> <br />The above bearing values may be increased one-third when resisting loads caused by <br />wind or seismic forces, providing the resultant size is not less than that obtained with <br />dead load and live load only. <br /> <br /> <br />Settlement – Total and Differential (Static) <br /> <br />Based on the design criteria, settlement should not exceed 0.2 inch for the continuous <br />footings and 0.5 inch for the isolated pad footings. <br /> <br />Overall differential settlement is expected to be 0.3 inch. Approximately ½ of the <br />settlement will occur during the construction period. Once constructed, the differential <br />settlement will be ¼ inch or less. The maximum differential settlement should not <br />exceed ½” over a 20 feet span. <br /> <br /> <br />Earth Pressures <br /> <br />Lateral loads will be resisted by the friction between the floor slab and sub-grade as well <br />as the passive resistance of the soils against footings. <br /> <br />A coefficient of friction of 0.4 may be used between slabs, footings, and sub-grade. The <br />passive resistance of the soil may be taken to be 220 p.c.f. of E.F.P. The active lateral <br />soil pressure may be taken as 34 p.c.f. of E.F.P. <br /> <br />Slab on Grade <br /> <br />It is recommended that all footings should be reinforced with at least two (2) number 4 <br />bars; one at the top and one at the bottom. The slabs on grade should be at least 5 <br />inches thick and be reinforced with Number 3 bars at 16 inches on center. <br /> <br />This should be underlain by a capillary break consisting of 3 inches of gravel or crushed <br />stone containing not more than 10% of the material passing through a #4 sieve per the <br />2019 CBC above a 10 mil poly vinyl chloride sheet. <br /> <br />2010 & 2012 N Bush Ave, <br />#100 and #1012/21/2025