Three wheel loads rolls as a unit across a 12-m span. The loads are A = 15 kN; B = 25 %3D kN, 2 m to the right of A; and C 50 kN, 6 m to the right of B. Determine the moment at B in kN-m.

Q: Only Draw profile with appropriate scale

A: To draw the profile to the given levelling

Q: A line was measured as 79.52 Chains. What is the length of the line in feet? (to nearest 0.1 foot)

A: 1 chain = 66 feet 79.52 chains = 79.52 x 66                         = 5248.3 feet

Q: Define Spencer Charts.

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Q: Define Relative Density.

A: Relative density or specific gravity:

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A: answer = 21.94 feet

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.