JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Self-Weight and Surcharge SelfWeight = ( l 1 + l 2 ) ( w 1 + w 2 ) × Thickness × δ c 1 × DLF UniformSurcharge = ( l 1 + l 2 ) ( w 1 + w 2 ) × ( DeadSurcharge × DLF + LiveSurcharge × LLF ) Equation 4-5 Note: Except for footings in uplift, footing self-weight and surcharge are not calculated for concrete load combinations as the load is completely balanced by the soil when calculating moments and shears on the footing. Parent topic: Analysis of Spread Footings for Soil Pressure