11.8 For a mean annual air temperature of 45°F and a normal modulus of 22,500 psi, determinethe effective roadbed soil resilient modulus for the monthly moduli shown in Table 11.10[Answer: 22,200 psi]TABLE 11.10 Subgrade Modulus Used in the DAMA ProgrammodulusSubgrade modulus by month (10 psi)NormalMAAT(psi)DecJanFebMarAprMay JunJulAugSep OctNov45°F45004.527.350.01.622.343.063.784.54.50.96.012,00012.031.050.07,208.409.6010.812.012.0(7°C)22,50022.536.350.015.817.118.519.821.222.522.560°F45004.527.31.352.143.714.54.54.512,00012.031.07.28.410.812.012.012.0(15.5°C)22,50022.538.318.019.121.422.522.522.5-Note. 1 psi 6.9 kPa.Source. After AI (1982).15.921.529.44.512.022.538.740.543.150.050.050.02.939.620.34.512.022.5

Given, Normal modulus= 22,500 psi

11.8 For a mean annual air temperature of 45°F and a normal modulus of 22,500 psi, determine the effective roadbed soil resilient modulus for the monthly moduli shown in Table 11.10 [Answer: 22,200 psi] TABLE 11.10 Subgrade Modulus Used in the DAMA Program modulus Subgrade modulus by month (10 psi) Normal MAAT (psi) Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 45°F 4500 4.5 15.9 27.3 50.0 0.9 1.62 2.34 3.06 3.78 4.5 12,000 12.0 21.5 31.0 50.0 6.0 7.20 8.40 9.60 10.8 12.0 (7°C) 22,500 22.5 29.4 36.3 50.0 15.8 17.1 18.5 19.8 21.2 22.5 60°F 4500 4.5 4.5 27.3 1.35 2.14 2.93 3.71 4.5 4.5 12,000 12.0 31.0 7.2 8.4 9.6 10.8 12.0 12.0 (15.5°C) 22,500 22.5 38.3 18.0 19.1 20.3 21.4 22.5 22.5 Note. 1 psi - 6.9 kPa. Source. After AI (1982). 12.0 22.5 38.7 40.5 43.1 50.0 50.0 50.0 4.5 12.0 22.5 4.5 12.0 22.5 4.5 12.0 22.5

11.8 For a mean annual air temperature of 45°F and a normal modulus of 22,500 psi, determine the effective roadbed soil resilient modulus for the monthly moduli shown in Table 11.10 [Answer: 22,200 psi] TABLE 11.10 Subgrade Modulus Used in the DAMA Program modulus Subgrade modulus by month (10 psi) Normal MAAT (psi) Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 45°F 4500 4.5 15.9 27.3 50.0 0.9 1.62 2.34 3.06 3.78 4.5 12,000 12.0 21.5 31.0 50.0 6.0 7.20 8.40 9.60 10.8 12.0 (7°C) 22,500 22.5 29.4 36.3 50.0 15.8 17.1 18.5 19.8 21.2 22.5 60°F 4500 4.5 4.5 27.3 1.35 2.14 2.93 3.71 4.5 4.5 12,000 12.0 31.0 7.2 8.4 9.6 10.8 12.0 12.0 (15.5°C) 22,500 22.5 38.3 18.0 19.1 20.3 21.4 22.5 22.5 Note. 1 psi - 6.9 kPa. Source. After AI (1982). 12.0 22.5 38.7 40.5 43.1 50.0 50.0 50.0 4.5 12.0 22.5 4.5 12.0 22.5 4.5 12.0 22.5

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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