Vehicles arrive at a toll both starting at 7:00 A.M. at a rate of λ(t) = 5.1 – 0.05t [with λ(t) in veh/min and t in minutes after 7:00 A.M.]. The first operator processes cars at a rate of 3 veh/minute 7:00 A.M. until 7:15 A.M when the person leaves because of illness. From 7:15 A.M to 7:25 A.M, no one is at the toll booth but a new operator arrives at 7:25 A.M and processes at a rate of μ(t) = 8 + 0.3t [with μ(t) in veh/min and t in minutes after 7:25 A.M.]. Assuming D/D/1 queuing, what is the maximum queue length (in vehicles) and the average delay per vehicle?

A 2 by 4 wood beam (E = 2000 ksi) with an allowable flexural stress of 1200 psi is subjected to bending around it's strong axis. Determine the % increase in flexural moment capacity if the beam is reinforced by 2 0.25" steel (E = 30000 ksi) plates with an allowable flexural stress of 24000 psi at the top and the bottom of the beam respectively.

In sedimentation design, depth is not used for performance (removal) calculations. However, a minimum clarifier depth (side water depth) is often specified. Why?

A 10 m wide road is to be constructed across a site where the soil profile consists of 3 m of sand, overlying 1 m of peat, over a deep sand deposit. The water table is 1 m below the soil surface. The road pavement applies a uniform stress of 20 kPa to the underlying soil. The peat is lightly over-consolidated with an over-consolidation ratio of 1.25, has a uniform void ratio, e = 2.0, a re-compression index, Cr = 0.2, a compression index, Cc =1, and a specific gravity, Gs = 2.5. The sand can be assumed to be incompressible, with d = 17 kN/m3 and sat = 20 kN/m3 . Calculate the settlement beneath the centre and beneath an edge of the road.

The answer is 28.8mm beneath the centre and 6.4mm under the edge but I can't understand why.

Considering the entire procurement process (i.e., bidding through the contract award periods), what type of bonds are normally required to be provided by a bidder/proposer to be awarded a public works construction project?

A downgrade of 5.0% meets an upgrade of 4.0%. This curve passes through the lowest point at 20 metres to the right of the intersection point

1. Find the length of the curve.

2. The reduced level at chainage 2450m, which is located on the downgrade, is 214.5m on the gradeline. The reduced level of the curve at the lowest point is 210m. Find the chainage at the lowest point.

3. Find the chainages and reduced levels of the two tangent points.

In Surveying in the PLSS:

Match which method to use to set the lost corner type:

1 .Land Grant Corner

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion      

2. 1/4 corner

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion   

3. Section Corner interior of a township

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion   

4. Corner on the baseline

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion   

5. Township corner common to two townships

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion

6. Meander corner where measure terminated

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion   

7. Section corner common to only one section

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion   

8. Corner on range line with angle point in the record

[ Choose One ] 2 point control, Grant boundary method, Single point control, Double proportion, Modified single proportion, Single proportion with curve adjustment , 3 point control, Single proportion

Give one Material Category and its Component that have Interesting Technology in the fields of Materials Science And Engineering (MSE).

• Description of what you researched.
• How it relates to MSE.
• Why it is of interest to you.
• How it has been or will be used (application).
• How it might help society.

In the accompanying figure (Figure 1), the X and Y coordinates (in meters) of station A are 1007.673 and 1869.166, respectively, and those of station B are 1565.021 and 648.185, respectively. Angle BAP was measured as 308∘56′39′′ and angle ABP was measured as 58∘53′30′′. What are the coordinates of station P?

Question 1

1. Stress is defined as

   	1.	Force x Area
   	2.	Force - Area
   	3.	Force + Area
   	4.	Force/Area

10 points

Question 2

1. Stress value below the earth surface depends on:

   	1.	Density of soil particles
   	2.	Depth of the point at consideration
   	3.	Both 1 and 2
   	4.	None of the answers

10 points

Question 3

1. Neutral Stress results from:

   	1.	Soil particles
   	2.	Seismic activity
   	3.	Both water and soil
   	4.	Water table

10 points

Question 4

1. In a soil with lateral stress coefficient K = 0.9, a vertical stress of 1000 psf is applied, the horizontal stress is:

   	1.	Not known
   	2.	1000 psf
   	3.	100 psf
   	4.	900 psf

10 points

Question 5

1. Stresses in deeper layers of soil are:

   	1.	Applied on building footprint area
   	2.	Applied on a larger area than the building footprint
   	3.	Can't be calculated
   	4.	Applied on a smaller area than building footprint

10 points

Question 6

1. For a point 6 ft below the soil surface, what is the stress in psf, given that the soil density is 120 pcf

   	1.	120 psf
   	2.	6 pcf
   	3.	620 pcf
   	4.	720 psf

10 points

Question 7

1. The angle at which the soil tend to rest when left unsupported on the ground is called:

   	1.	Angle of repose
   	2.	Angle of internal friction
   	3.	Both 1 and 2
   	4.	None of the answers

10 points

Question 8

1. In clay soil, the shear strength is a result of:

   	1.	Cohesion coefficient
   	2.	Confinement of soil
   	3.	Both 1 and 2
   	4.	Bearing capacity

10 points

Question 9

1. In a given soil, cohesion coefficient C is 200 psf, the angle of internal friction is 30, and a compressive stress of 1000 psf is applied, shear strength will be

   	1.	Unknown
   	2.	777 psf
   	3.	200 psf
   	4.	500 psf

10 points

Question 10

1. Vane shear strength test is applied for:

   	1.	A soft clay layer with 10 ft depth
   	2.	soft clay layers with no depth limitation
   	3.	gravel layers
   	4.	Any soil

Explain the process for establishing the line and grade for a sanitary sewer line connection to an existing municipal sanitary manhole. Include the type of sewer flow, the importance of the pipe invert and reach of the sewer in determining the slope of the pipe, factors that determine the use of manholes, the use of batter boards and offset stakes, minimum ground cover required. In addition, discuss the use of visual aid such as field notes and a simple plan and profile drawing in establishing the line and grade.

Q.2. Design a square footing for a 16-in. square interior column with an ultimate dead load = W₁ (k) and an ultimate live load = W₂ (k). Take f_y=60,000 psi, f_c=4000 psi, normal weight, and q_a= (w) psf. Assume the base of the footing is h (ft.) below grade. Draw the reinforcement detail also. Check for one way and two way shears with the support of diagram.       

          Student shall take the data given below in the table against their name.

Answer by ACI code requirements

The following are assigned industries/services required to be analyzed/assessed, one per as clarified below:

Distributors: locally, regionally, internationally

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Please answer the following questions

1-Diversity is strength so long as everyone respects ___________ __________ of local/regional society. (Fill in the blanks).

2-The absolute prerequisite of any successful sustainable management is _________ and __________ . (Fill in the blanks).

3-Positive moods lead to __________ and ____________. (Fill in the blanks).