HW 3 solution

# 38 yrs go on to the next page 11 cee 362 homework 3

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Unformatted text preview: si =4* lb / = 0.8 J = 2.8 K = 150 lb / TSI = 2.5 ΔPSI = 2.3 log10W18 Z R S o 7.35log10 D 1 - 0.06 log10 PSI / 3.0 8.46 1 1.624 107 D 1 ' S c Cd D 0.75 1.132 4.22 0.32TSI log10 215.63J D 0.75 18.42 E k 0.25 c 1.162* GO ON TO THE NEXT PAGE 13 CEE 362 - Homework #3 Daily design = Solution Manual = 570.2 truck/day conservative for 3 lane, PDL = 0.8, table 4.10 total traffic = total traffic = 713 truck/day 14 CEE 362 - Homework #3 Solution Manual Problem # 8: D = 8 in = 90% =5* = 700 psi CBR = 25 K = 150 lb / J=3 ΔPSI = 2.1 = 0.30 = 1.0 N = 20 yrs log10W18 Z R S o 7.35log10 D 1 - 0.06 log10 PSI / 3.0 8.46 1 1.624 107 D 1 ' S c Cd D 0.75 1.132 4.22 0.32TSI log10 215.63J D 0.75 18.42 E k 0.25 c = 2.676* Assume D= 11 inch 22 -kip-single 30 -kip - tandem using tables: ESAL for 22 -kip-single = 2.40 ESAL for 30 -kip-single = 1.14 Total ESAL = 2.40+1.14 = 3.54 GO ON TO THE NEXT PAGE 15 CEE 362 - Homework #3 Solution Manual = 1000*3.54*0.75*365 * 20 =19381500 New = 2.676* 19381500 * log10 NewW18 Z R S o 7.35log10 D 1 - 0.06 log10 PSI / 3.0 8.46 1 1.624 107 D 1 ' S c Cd D 0.75 1.132 4.22 0.32TSI log10 215.63J D 0.75 18.42 E k 0 .25 c solving for D = 11.29 in 16...
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## This document was uploaded on 02/11/2014.

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