Traffic on a northbound highway segment is stationary and is composed of two families of vehicles; cars which travel at speed vc and trucks which travel at speed vt . A moving observer traveling in the opposing (i.e., southbound) direction travels a distance L in time T, L / T = v o. During this trip, the moving observer counts the number of (northbound) cars, mc, and the number of (northbound) trucks, mt, that pass her.

Derive an expression for the total flow of vehicles in the northbound direction in terms of the variables given.

The Problem involves building a 12 – foot diameter sewer at a bottom depth of 40 feet in loose sand with a water table at a depth of 8 feet. The alignment is along city streets. The project needs to be completed in 800 days. Determine the amount and types of equipment you feel should be used on this project. The sewer is ten miles in length.

Derive mathematical expressions that predict the effluent concentration of the batch reactor, completely mixed flow reactor, and plug flow reactor.

write in a table format, advantages and disadvantages of single, multiple and dual sourcing.

After detail underground inspection, the geotechnical engineer have located underground utilities consist of lines for telecommunication, electricity distribution and rail tunnels located at a depth starting at 2 meter below the ground surface. With the help of a diagram, provide and describe a geotechnical design flowchart of your proposed platform with regards to the findings by the geotechnical engineer mentioned.

Geotechnical Engineering

9. Describe the structure of coarse and fined grained soils.

10. Describe OMC in detail.

11. Describe the impact of compaction on the structure of clayey soils using following figure.

SOIL QUESTION

FOR WHAT TYPE IS A VANE SHEAR TEST (VST) MOST APPROPRIATE? EXPLAIN WHY BRIEFLY.

Topic: Construction - Soils

(Note: Briefly discuss in your own words, 2-3 paragraphs minimum, add reference if using any.)

Create a Technical report about "Soils conditions requiring drainage and drainage types and methods". Your report should include charts/tables and other tabulated information collected from your research of this topic.

Geotechnical Engineering

5. Describe the dipole structure of water molecules in detail.

6. Describe the Gouy-Chapman theory of diffuse-double layer in detail.

7. Describe Atterberg limits in detail.

8. What is PI and describe its impact on the properties of soil.

At a three leg (T) intersection, the two-way peak hour volume on the minor road is 450 veh/hr and that on the major road is 650 veh/hr. As a Traffic Engineer, what type of intersection control will you propose? What is the basis of your proposal?

W 24 * 55 of 50ksi. what is the

1. Ag

2. rx and ry

How precast concrete piles could be assisted in penetration of soils

"Two reservoirs 1200 m apart are connected by a 50-cm smooth concrete pipe. If the two reservoirs have an elevation difference of 5 m, determine the discharge (20 degree C) in the pipe by the Darcy Weisbach equation, (b) the Hazen- Williams equation, (c) the Manning equation. Assume minor losses are negligible and verify your results with computer software."

Circular Clarifiers and Rectangular clarifiers are facilities are used for clarification of water and wastewater during treatment.

1- Write short notes on each one of them with more emphasis on the similarities and differences in treatment processes.

2- Advantages and disadvantages between the circular clarifiers and Rectangular clarifiers..