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MainPlace Mall Transformation Project 12126.001 <br />Conventional Shallow Foundation <br />Isolated Column Foundations Continuous Strip Foundations <br />Width <br />2 feet <br />1 1 foot <br />Embedment <br />1.5 feet <br />Sustained Dead plus Live Loads <br />2,000 pounds per square foot (psf) <br />Bearing Pressure <br />Bearing pressure may be increased by 250 psf per foot increase in <br />depth or width to a maximum of 2,500 psf for strip foundation and <br />3,000 psf for isolated column footings. <br />Lateral Load Resistance <br />Frictional Resistance <br />0.35 <br />270 psf/ft <br />Passive Resistance <br />Maximum 4,000 psf <br />Short-term Loads (i.e., Seismic and Wind) <br />Bearing pressure, friction, and passive resistance are allowable values and can be increased by one- <br />third for short-term loading. The passive resistance should be reduced by one-third when combined <br />with frictional resistance to calculate total resistance. <br />Foundation settlement is expected not to exceed 1 inch total and Y2 <br />differential over a horizontal distance of 40 feet. The potential impact of <br />seismically -induced settlement should also be considered in evaluation of <br />foundation system alternatives (See Section 3.4). <br />Mat Foundations <br />Embedment <br />2 feet <br />Sustained Dead plus Live Loads <br />Bearing Pressure <br />1,500 pounds per square foot (psf) <br />Subgrade Modulus <br />K. (Center) = 46 kips per cubic foot (kcf) <br />• K. (Edge) = 92 kcf <br />Lateral Load Resistance <br />Frictional Resistance <br />0.35 <br />Passive Resistance <br />270 psf/ft <br />Maximum 4,000 psf <br />Short-term Loads (i.e., Seismic and Wind) <br />Bearing pressure, friction, and passive resistance are allowable values and can be increased by <br />one-third for short-term loading. The passive resistance should be reduced by one-third when <br />combined with frictional resistance to calculate total resistance. <br />14 <br />Leighton <br />