Given:Design ESAL = 5 x 106 Initial serviceability index = 3.5 Terminal serviceability = 2.5Standard deviation = 0.5Reliable = 90% 2] Determine the Structural Number (SN) for a flexible pavement that will be supported bythe following subgrade, base, subbase:CBRbaseCBRsubbaseCBRsubgradeMr asphalt (68 deg. F) = 450,000 psi100%25%a2=0.14a3=0.10use Mroadbed soil = 1500 * CBRa1=0.456%The pavement must be of the following characteristics:90% Reliable will serve a total load of 5 x 106 ESALSStandard deviation of 0.5Initial and terminal serviceability of 3.5 and 2.5, respectively.Determine also the thicknesses of surface material, base, and subbase. (m2 = 0.6 m3= 0.8) that would "fit" the SN. Thicknesses of the courses are: {asphalt concrete,base, subbase} = {D1, 2.5*D1, 2*D1} units: inchesScreenshot (or take a picture of) your use of flexible pavement nomograph.

Answered: Image /qna-images/answer/0da24133-b4a8-4c26-bdb6-f067699d9431.jpg

Answered: Design ESAL = 5 x 106 Initial…

Design ESAL = 5 x 106 Initial serviceability index = 3.5 Terminal serviceability = 2.5 Standard deviation = 0.5 Reliable = 90%

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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Concept explainers

Dimensional homogeneity

The term dimensional homogeneity means that in an equation, the dimensions of each term on both sides are equal, which means the dimensions of the left-hand side (LHS) of an equation are similar to the dimensions of the right-hand side (RHS). For a dimensionally homogeneous equation, the powers of fundamental dimensions will be identical on both sides of the equation.

Question

Given:

Design ESAL = 5 x 10⁶

Initial serviceability index = 3.5

Terminal serviceability = 2.5

Standard deviation = 0.5

Reliable = 90%

2] Determine the Structural Number (SN) for a flexible pavement that will be supported by
the following subgrade, base, subbase:
CBRbase
CBRsubbase
CBRsubgrade
Mr asphalt (68 deg. F) = 450,000 psi
100%
25%
a2=0.14
a3=0.10
use Mroadbed soil = 1500 * CBR
a1=0.45
6%
The pavement must be of the following characteristics:
90% Reliable will serve a total load of 5 x 106 ESALS
Standard deviation of 0.5
Initial and terminal serviceability of 3.5 and 2.5, respectively.
Determine also the thicknesses of surface material, base, and subbase. (m2 = 0.6 m3
= 0.8) that would "fit" the SN. Thicknesses of the courses are: {asphalt concrete,
base, subbase} = {D1, 2.5*D1, 2*D1} units: inches
Screenshot (or take a picture of) your use of flexible pavement nomograph.

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