= 2.5. n axle weight study on a section of highway gave the following data on axle load distribution. Determine the truck factor for this section of highway. Assume SN = 4 and Pt uck factor = Axle Load Group: Single (1,000 lb) 4 6 10 14 18 20 22 24 26 No. of Axles per 1,000 Vehicles 675 776 496 152 59 41 7 4 3 Axle Load Group: Tandem (1,000 lb) 4 10 16 22 28 32 34 36 38 40 No. of Axles per 1,000 Vehicles 18 233 171 122 153 64 31 12 4 1

= 2.5. n axle weight study on a section of highway gave the following data on axle load distribution. Determine the truck factor for this section of highway. Assume SN = 4 and Pt uck factor = Axle Load Group: Single (1,000 lb) 4 6 10 14 18 20 22 24 26 No. of Axles per 1,000 Vehicles 675 776 496 152 59 41 7 4 3 Axle Load Group: Tandem (1,000 lb) 4 10 16 22 28 32 34 36 38 40 No. of Axles per 1,000 Vehicles 18 233 171 122 153 64 31 12 4 1

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter19: Design Of Flexible Highway Pavements

Section: Chapter Questions

Problem 4P

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An axle weight study on a section of highway gave the following data on axle load distribution. Determine the truck factor for this section of highway. Assume SN = 4 and pt = 2.5.
A. Given 20 years Design years for 2 direction of road Number of lanes = 2 lanes ADT = 3500 %3D Calculate the ESAL for one direction of road Wheel Load (kN) Equivalent Load Factors % in total traffic volume 45 0.03 25 20 0.044 16 150 15 8 80 2.5 25 165 25 21 285 42
The traffic load distribution (TLD) of the axle groups of an urban road (Highway A) is shown in the table below. You can download this table from vUWS. Table: TLD Load (KN) SAST Total SADT 20 14.470 37.925 40 10.358 17.999 60 74.654 28.051 80 0.474 9.225 100 0.044 6.801 Reference loads (KN) 53.0 TAST 80.0 0.370 2.000 45.736 16.523 35.371 100.000 100.000 Proportions 0.355 0.221 0.136 0.121 TADT TRDT 1.974 0.118 7.387 14.200 2.972 2.917 50.600 54.449 14.424 15.879 21.141 24.530 17.347 21.320 50.743 100.000 100.000 100.000 100.000 0.143 0.024 90.0 135.0 QADT 181.0 221.0 Determine the NHVAG and damage index ESA/HVAG for Highway A.
4.7 PROBLEMS 4.7.3 Axle load study conducted on a stretch of road in 2017 yield theşe results: Axle load range (ton) 2 - 4 4 - 6 6 -8 8 - 10 10 - 12 12 – 14 No. of axle 500 710 599 621 452 168 Number of commercial vehicles for the particular day is 1860. Based on Road Note 31, determine: a) Average number of axle per commercial vehicle; b) Total equivalent standard axle for that particular day; c) Average number of standard axle per commercial vehicle; and d) Average number of standard axle per commercial axle.
Question 4 a) The axle load data collected on a section of a highway for a short duration for 2 and 3 - axle trucks are presented in Table 1. Determine the ESAL per axle, total ESAL per truck and the truck factors for 2 and 3-axle trucks. Table 1: Axle load data Vehicle питber No. of axles Axle Weight (tons) Axle 3 Axle 4 Axle 5 Date Сommodity Axle 1 Axle 2 15-Jul-10 GR 6687 -10 16-Jul-10 GW 4925 S 15-Jul-10 AS 4602 Z 15-Jul-10 BA 4772 C 16-Jul-10 GR 2706 09 15-Jul-10 GR 9626 E 16-Jul-10 WR 9290 C 15-Jul-10 AS 6865 Q charcoal 3 4.00 10.20 5.20 13.60 16.80 cement 5.50 lumber 10.20 4.00 14.60 charcoal charcoal charcoal 2 6.10 4.20 14.20 8.50 19.80 13.20 charcoal 5.10 13.70 charcoal 8.40 14.90 6.10
A common passenger car has two single axles with 2-kip load on each. A truck has tandem axles and one single axle. The tandem axles carry 48-kip load on each axle. The single axle of the truck carries 14 kip. If SN=5, P= 2.5, how many passenger cars produce the equivalent damage of one truck on flexible pavement?
This is a type of load varies in length when getting the maximum internal forces of a structure. O Axle Loads O Moving load O Dead Load O Live Load
A traffic surveying conducted on a road yield an average daily traffic count of 5000 vehicle. The axle load distribution on the same road is given in the following table. Axle load (tones) Frequency of traffic (f) 18 10 14 20 10 35 8 15 6 20 ... The design period of the road is 15 years. The yearly Traffic growth rate is 7.5% the load safety factor (LSF) is 1.3. If the vehicle damage factor (VDF) is calculated from the above data, the design traffic (In million standard axle load MSA) is
The truck drives on a horizontal road with a constant velocity. It eventually halted by a set of crash barrels. The number of barrels and sand within the barrels are arranged in such a way to decelerate the truck at a constant rate. Four test runs are performed where the velocity and mass of the truck are varied. In each of the following situations, the barrels stop the truck in the same amount of time. Which has the a. least force, b. greatest force.
Situation: A proposed four-lane divided highway is to be constructed using asphalt concrete surface layer. Table below shows the fvevRAr traffic data collected from DPWH regional office along the proposed alignment. Load per axle, Ibs 2,000 10,000 14,000 6,000 Vehicle Number of Description AADT Code axles В, В1, В2 12-2 12-3 Light Vehicles (sedan, SUV, pickup) Semi-trailer trucks Truck semi-trailer Public buses, single-unit trucks 75,000 4,000 1,500 15,700 5 D-4 2 Forecasted annual traffic growth Percentage of traffic on design lane Design service life of pavement = 4.Y% = 32% = 20 years Moreover, the regional office plans to adapt a flexible pavement with the following specifications listed below. Resilient modulus of asphalt concrete Resilient modulus of base course Resilient modulus of subbase course = 420 ksi California Bearing Ratio (CBR) of base course material California Bearing Ratio (CBR) of subbase material California Bearing Ratio (CBR) of subgrade material - 28.5 ksi = 15…
Following figure shows the mass-haul diagram for a road project. -Mass-Haul Diagram Volume (m³) 20000 15000 10000 5000 0 -5000 -10000 -15000 -20000 0 500 1000 1500 2000 Distance from the start of the project (m) 2500 O The soil will have to be moved from right towards the left ● Cannot be determined from the given information O The soil will have to be moved from left towards the right. O There will not be any movement of soil. 3000 3500 The section from 1400 m to 1600 m has been identified as a free-haul section. What will be the direction of net soil movement within this free-haul section?
Q5. Given the following information: A concrete pavement for two lane highway has doweled joints and no concrete shoulders. The modulus of subgrade reaction is 200 pci (54.2MN/m3), and the modulus of rupture is 650 psi (4.5Mpa). Assume a load safety factor of 1.1. truck weight distribution data for single axle load is as follows: Axle load(kips) 1 Single axles 28 Multiplied by LSF (1.1) 26 24 2 Expected repetitions 3 Erosion analysis Allowable repetitions 30.8 5,913 28.6 12,483 26.4 15,111 22 24.2 102,492 Using a trial thickness of 8 in. Fill in the empty spaces using PCA design method 4 6. Erosion factor Erosion percent 5