Answered: inimum air temperature) = -21.3 oC…

Engineering

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inimum air temperature) = -21.3 oC Standard deviation of the 1-day minimum air temperature = 3.3 oC High pavement desi

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter8: Intersection Control

Section: Chapter Questions

Problem 6P

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Concept explainers

Highway Safety

Proper highway safety refers to the methods or rules that prevent highway travelers from being killed or severely injured. Proper highway safety measures help to protect motorists, cyclists, pedestrians, passengers on public transport, and so on.

Question

A rural 4-lane highway is to be built between A and B. Select the binder performance grade to meet the Superpave criteria for a reliability level of 98%, given the following information about the project: Latitude = 46.77 Tair (max) (Seven-day average high air temperature) = 33.1 oC Standard deviation of the seven-day high air temperature = 1.8 oC Tair(min) (1-day minimum air temperature) = -21.3 oC Standard deviation of the 1-day minimum air temperature = 3.3 oC High pavement design temp. T20 = (Tair-0.00618Lat2+0.2289Lat+42.2)(0.9545)-17.78

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Q1) A rural 4-lane highway is to be built between A and B. Select the binder performance grade to meet the Superpave criteria for a reliability level of 98%, given the following information about the project: Latitude = 46.77 Tair (max) (Seven-day average high air temperature) = 33.1 °C Standard deviation of the seven-day high air temperature = 1.8 °C Tair(min) (1-day minimum air temperature) = -21.3 °C Standard deviation of the 1-day minimum air temperature = 3.3 °C High pavement design temp. T20 = (Tair-0.00618Lat+0.2289Lat+42.2)(0.9545)-17.78.
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