Please estimate the minimum cycle length and the green intervals for the following signalized intersection (Figure 7). Please note that the minimum cycle length will be influenced by the design of the phasing diagram. The arrival flow, in pcu/h, for each direction, is illustrated in Figure 7. Please assume any missing values. Lost time following each phase = 2 sec, Amber = 3 sec, Red all = 1 sec, saturation flow 1400 pcu/h. 196, 367, 170 400, 140, 215 120, 417, 232 400, 433, 184 Figure 7. Intersection Layout and Traffic Flow Data

Please estimate the minimum cycle length and the green intervals for the following signalized intersection (Figure 7). Please note that the minimum cycle length will be influenced by the design of the phasing diagram. The arrival flow, in pcu/h, for each direction, is illustrated in Figure 7. Please assume any missing values. Lost time following each phase = 2 sec, Amber = 3 sec, Red all = 1 sec, saturation flow 1400 pcu/h. 196, 367, 170 400, 140, 215 120, 417, 232 400, 433, 184 Figure 7. Intersection Layout and Traffic Flow Data

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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3. A bus route having seven schedule stops has the following number of passengers alighting and boarding the bus: Stop Alighting Boarding 1 0 20 2 3 5 3 5 7 4 6 3 Rectangular Snip 5 8 4 6 7 2 7 12 0 Passengers board and alight through the front door. Alighting time/passenger = 1.8 sec and boarding time/passenger = 3 sec. Compute the dwell time at each stop and the total dwell time. (Assume the clearance time = 5 sec).
A new wastewater treatment plant upgrade for Pseudo City requires an equalızation basin to even out flow variations. The following hourly-average flows have been found to be typical of the average variation over a day. FLOWRATE (m³/min) 6.59 FLOWRATE (m³/min) HOUR HOUR 12 AM 1 PM 8.82 1 6.17 8.67 2 5.26 3 8.40 3 4.47 4 8.40 4 3.94 5 8.14 5 3.44 7.61 6 3.44 7 7.34 7 3.48 8 7.34 8 5.79 7.12 7.87 10 6.17 10 8.59 11 5.90 11 8.82 12 AM 6.59 12 noon 8.82 (a) What is average flow rate over a typical day? (b) What design volume is required for the equalization basin to provide for a uniform outflow equal to the average daily flow? Assume that an addition of 25% to the estimated volume will be provided to account for contingencies.
Q1/ Traffic movement in the 16-hrs from 6: - 22: = 0.93 24hr flow and daily (16hr) flows from Morning to Friday to be almost constant. If Friday , Saturday, and Sunday are 10000 Veh, 8000 Veh, and 8000 veh respectively, however June =107% of annual average month. Find ?AADT
Q1/ Traffic movement in the 16-hrs from 6: - 22: = 0.93 24hr flow and daily (16hr) flows from Morning to Friday to be almost constant. If Friday, Saturday, and Sunday are 10000 Veh, 8000 Veh, and 8000 veh respectively, however June =107% of annual average month. Find AADT? * 5643 veh 10075 veh 70968 veh O 9475 veh
Q1. During a 60 seconds period, a loop detector is occupied by vehicles for the following times for the following, 0.34s (car1), 0.38s (car2), 0.40s (car3), 0.32s (car4) and 0.52s (car5). Estimate the value of flow, density and velocity. You can assume that length of the loop detector is equal to 10 feet and the average length of all vehicles is 20 feet. Vehicle Ground Loop Detection Circuit Ż
Question 16 During critical flow condition, which of the following is minimized? flow rate head depth O width
Select the true items related to traffic signal design. Select only the four correct answers. For the dissipation of queue, the average saturation flow should be smaller than arrival flow. Intergreen is the time duration from the end of green time of a particular phase to the beginning of green time for the other phase. Average saturation flow is smaller than saturation flow. Key tasks of traffic signal design involve phasing, red time allocating and green time allocating. Intergreen is the time duration from the end of green time of a particular phase to the beginning of green time for the same phase. For the dissipation of queue, the average saturation flow should be greater than arrival flow. Average saturation flow is greater than saturation flow. Key tasks of traffic signal design involve phasing, cycling and green time allocating.
QUESTION 8 During one hour, 1800 pedestrians passed by the observation point on the pedestrian walkway. The flow appeared to be relatively consistent over the hour (i.e. PHF=0.90). The effective walkway width was 5 ft. Based on the pedestrian flow per unit width (p/ft/min), at what LOS was the walkway operating, assuming no platooning. O A B с D ΟΕ OF
The following equation describes flow-density relationship: q=46k−0.30 k^2 where q is in vehicles per hour. Use Greenshield’s model. a.Calculate flow at capacity. b.Calculate the jam density. c.Calculate the shockwavespeed from initialdensity of 76 vpk to final density of 129.2 vpk.
QUESTION 10 During one hour, 1800 pedestrians passed by the observation point on the pedestrian walkway. The flow appeared to be relatively consistent over the hour (i.e. PHF-0.90). The effective walkway width was 5 ft. Pedestrian were moving at roughly 4.25 ft/sec. What was the observed average spacing (ft2/ped)? Record your answer to the nearest integer.
7.10 An in-line equalization basin is to be designed for a wastewater treatment plant. From plant re- cords. a compilation has been made that gives the hourly flowrate versus hour of the day as follows: HOUR MGD MLD HOUR MGD MLD 12 A.M. 3.0 11.4 1 Р.М. 6.6 25.0 1 8.3 7.9 6.6 25.0 2 こ.1 3 7.1 26.9 3 2.0 7.6 7.6 28.8 32.9 37.5 4 2.4 9.1 5 8.7 5 2.8 10.6 6 9.9 3.6 13.6 7 9.9 37.5 7 5.5 20.8 25.0 8 8.4 31.8 8 6.6 9 6.1 23.1 9 28.0 28.8 26.9 10 4.2 15.9 13.2 10 *.6 1 3.5 12 А.М. 3.0 11 11.4 12 noon 6.3 25.7 Determine the fluctuating volume required for the basin in gallons and cubic feet.
Question 2: Speed observations from a radar speed meter have been taken, giving the speeds of the subsidiary streams composing the flow along with the volume of traffic of each subsidiary stream. The readings are as under: Calculate: (i) Time-mean speed (ii)Space-mean speed (iii) Variance about space mean speed. Is pitn 50 puns on s pese sped Speed Volume of subsidiary mmidel spued (km hr) stream (Vehicle hour) 2-5 6-9 4 10-13 14-17 18-21 20 2-5 22-25 44 26-29 80 30-33 82 34-37 79 38-41 49 42-45 36 46-49 26 50-53 6. 54-57 10 58-61