A DOT is performing a benefit-cost analysis of a new highway using an analysis period of 40 years as part the required environmental impact assessment of the project. The section of highway is estimated to have a construction cost $220 million dollars. The public benefit in reduced travel time and economic development around the highway is estimated to be $17 million per year for the first 5 years, then decrease by 3% per year for the remainder of the 40 year analysis period as congestion grows and economic development slows. The public disbenefit is estimated to be $2 million dollars in year 0 due to additional congestion and pollution during construction, then average $160,000 per year over the 40-year project life in environmental costs due to increased runoff and vehicle emissions. Using an interest rate of 4%, determine the benefit-cost ratio for this project using public/government version of the B/C ratio. Express your answer to two decimal places.

TRUE or FALSE: The best evidence of the intent of a survey is the testimony of the surveyor who performed the survey. Why or why not?

produce a report (300 words min) which identifies the requirements for drainage within the railway infrastructure and the methods of achieving adequate drainage. use a section of track as an example and illustrate your report with photographs and drawings as appropriate. explain the common failure modes associated with track drainage.

The 45∘ strain rosette is mounted on the surface of a shell. The following readings are obtained for each gage: ϵa=−200(10−6), ϵb=300(10−6), and ϵc=250(10−6)
Determine the in-plane principal strains

A flexural member is fabricated from two flange plates ⁄1 2 x 16 and a web plate 1⁄4 x 20. The yield stress of the steel is 50 ksi.

a.Compute plastic section modulus Z and plastic moment Mp wrt the major principal axis.

b.Compute elastic section modulus S and yield moment My wrt the major principal axis.

c. Check the local buckling criteria and apply it to the bending moment capacity

d. Plot the moment capacity vs. slenderness parameter λ , show, compact, noncompact, and slender regions and applicable moments

An oceanic Oil Tanker weighing 63,000 tons with no fuel has 13 separate tanks with dimensions of 110’ x 107’ x 32’. The waterline on the ship has a cross sectional area of 280,000 ft2. The ship can submerge a maximum of 15 feet due to the weight in the tanks, and the cross sectional area of the waterline will remain the same area. What is the maximum number of gallons of Kerosene (S.G. = .87) that the ship can hold, without going over the restriction? a. 20 Million Gallons b. 48 Million Gallons c. 36 Million Gallons d. 62 Million Gallons

TRP 631: HIGHWAY TRAFFIC OPERATIONS

An existing six-lane divided multilane highway with a field-measured free-flow speed of 45 mi/h serves a peak-hour volume of 4,000 veh/h with 10% trucks (50% SUT, 50% TT). The PHF is 0.88. The highway has generally rolling terrain. What is the likely level of service of this segment? Good weather, no incidents, no work zones, and regular drivers may be assumed.

What is liquefaction of sand? how can it prevented

Unlined trapezoidal channel to be excavated in fine sand soil to convey 350 ft3/s. The slope is 0.0025. Determine the width of the bottom and the depth of water of the cross section of the channel b and y.

A 200-acre catchment area contains 50 acres paved surfaces (C = 0.8), 100 acres buildings (C = 0.7), 40 acres open lawn space (C = 0.15). Determine the peak discharge Qp (cfs) by the Rational Method if the duration of the storm is 50 minutes. Assume 100-year return period storm. Use formulas/graphs from Houston City Manual.

TRP 631: HIGHWAY TRAFFIC OPERATIONS

An older four-lane freeway has the following characteristics:

• 11 ft lanes
• No lateral clearance
• 4.5 ramps/mile
• 5% truck( standard mix)
• Peak-hour factor = 0.90
• Rolling Terrain

The present peak-hour demand on the facility is 2,100 veh/h, and anticipated growth is expected to be 3% per year. What is the present LOS? What is the expected LOS in 5 years? 10 years? 20 years?. To avoid breakdown (LOS F), when will substantial improvements be needed to this facility, and/or alternative routes created? Good weather, no incidents, no work zones, and regular drivers may be assumed.

For steel member is subjected to cyclic loads,

The experimental results indicated failure at a number of cycles of 52 when the maximum stress is 1071 MPa. Also, failure at a number of cycles of 380,000 when the applied maximum stress is 506 MPA.

1. Find the fatigue equations for stress vs number of cycles using

σ = A N^B And σ = A (2N)^b

2) Plot on the same diagram both functions

3) Discuss the results of the two plots.

4) Find the number of cycles to failure when the maximum stress is 950 MPa in both functions