Traffic And Highway Engineering
Traffic And Highway Engineering
5th Edition
ISBN: 9781337631020
Author: Garber, Nicholas J.
Publisher: Cengage,
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Chapter 8, Problem 14P
To determine

For a signal phase determine the yellow interval by the given conditions.

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A square column foundation has to carry a gross allowable load of 2005 kN (FS = 3). Given: D₤ = 1.7 m, y = 15.9 kN/m³, 0' = 34°, and c' = 0. Use Terzaghi's equation to determine the size of the foundation (B). Assume general shear failure. For o' = 34°, N₁ 36.5 and Ny = 38.04. (Enter your answer to three significant figures.) B=2.16 m
For the design of a shallow foundation, given the following: Soil: ' = 20° c=57 kN/m² Unit weight, y=18 kN/m³ Modulus of elasticity, E, = 1400 kN/m² Poisson's ratio, μs = 0.35 Foundation: L=2m B=1m D₁ =1m Calculate the ultimate bearing capacity. Use the equation: 1 qu= c'Ne Fes Fed Fec +qNqFqs FqdFqc + - BNF √s F√d F 2 For d'=20°, N = 14.83, N = 6.4, and N., = 5.39. (Enter your answer to three significant figures.) qu kN/m²
1.0 m (Eccentricity in one direction only) = 0.15 m Qall = 0 1.5 m x 1.5 m Centerline An eccentrically loaded foundation is shown in the figure above. Use FS of 4 and determine the maximum allowable load that the foundation can carry if y = 16 kN/m³ and ' = 35°. Use Meyerhof's effective area method. For o' = 35°, N₁ = 33.30 and Ny = 48.03. (Enter your answer to three significant figures.) Qall kN
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Traffic and Highway Engineering
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