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MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781305577398
Author: Nicholas J. Garber; Lester A. Hoel
Publisher: Cengage Learning US
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Chapter 3, Problem 2P
To determine
The two types of visual acuity.
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$$ 5.1 Assume that you are observing traffic in a single
lane of a highway at a specific location. You measure
the average headway and average spacing of passing
vehicles as 3.2 seconds and 165 ft, respectively.
Calculate the flow, average speed, and density of the
traffic stream in this lane.
5.2 Assume that you are an observer standing at a
point along a three-lane roadway. All vehicles in lane
1 are traveling at 30 mi/h, all vehicles in lane 2 are
traveling at 45 mi/h, and all vehicles in lane 3 are
traveling at 60 mi/h. There is also a constant spacing
of 0.5 mile between vehicles. If you collect spot speed
data for all vehicles as they cross your observation
point, for 30 minutes, what will be the time-mean
speed and space-mean speed for this traffic stream?
Determine the direction of F2 such that the resultant force of adding F1 and F2 acts along the positive yaxis.
3 decimal places answer don't use ai
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- Please solve using cartesian coordinates. Be clear about why cos or sin is used (explain the trig). Make sure to account for the normal force.arrow_forwardSolve /Draw the shear force and bending moment for these Don't use Artificial intelligencearrow_forwardA For the gravity concrete dam shown in the figure, the following data are available: -The factor of safety against sliding (F.S sliding) =1.2 - Unit weight of concrete (Yeone) 24 KN/m³ - Neglect( Wave pressure, silt pressure, ice force and earth quake force) H=0.65, (Ywater)= 9.81 KN/m³ Find factor of safety against overturning (F.S overturning) 10m 5m 6m 80marrow_forward
- Draw the shear force and bending moment diagramarrow_forwardThe pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an aluminum alloy [E = 75 GPa] with a cross-sectional area of A₁ = 850 mm². Bar (2) is a bronze alloy [E = 109 GPa] with a cross-sectional area of A₂ = 410 mm². Assume L₁=2.6 m, L₂-3.3 m, a=0.7 m, b=1.5 m, and c=0.8 m. All bars are unstressed before the load P is applied; however, there is a 4.5-mm clearance in the pin connection at A. If a load of P = 45 kN is applied at B, determine: (a) the normal stresses σ1,02, in both bars (1) and (2). (b) the normal strains €1, €2, in bars (1) and (2). (c) determine the downward deflection VA of point A on the rigid bar. (1) Answers: a (a) σ1 = (b) E₁ = (C) VA = i i i ล B C L2 b C MPa, σ = i με, Ε2 i mm. MPa. μεarrow_forwardThe pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an aluminum alloy [E = 79 GPa] with a cross-sectional area of A₁ = 780 mm². Bar (2) is a bronze alloy [E = 104 GPa] with a cross-sectional area of A₂ = 460 mm². Assume L₁=1.6 m, L₂-2.1 m, a=0.6 m, b=1.8 m, and c-1.3 m. All bars are unstressed before the load P is applied; however, there is a 4-mm clearance in the pin connection at A. If a load of P = 58 kN is applied at B, determine: (a) the normal stresses 01,02, in both bars (1) and (2). (b) the normal strains €1,2, in bars (1) and (2). (c) determine the downward deflection VA of point A on the rigid bar. (1) L₁ B Answers: (a)σ = b ล L2 C D i MPa, σ1 = i MPa. με, Ε2 = i με. (b) €1 = i (C) VA = i mm.arrow_forward
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