A gravity dam of trapezoidal cross- section with one face vertical and horizontal base is 22 m. high and has a thickness of 4 m. at the top. Water upstream stands 2 m. below the crest of the dam. The specific gravity of masonry is 2.4. A. Neglecting hydrostatic uplift 1. Find the base width B of the dam so that the resultant force will cut the extreme edge of the middle third near the toe. 2. Compute the factors of safety against sliding and overturning. Use H=0.5

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.