transpo: Please show step by step and the diagram too. An approach to a signalized intersection has a saturation flow rate of 1800 veh/h. At the beginning of an effective red, there are 6 vehicles in queue and vehicles arrive at 900 veh/h. The signal has a 60-second cycle with 25 seconds of effective red. What is the total vehicle delay after one cycle? What is the maximum length of queuing within this cycle? (assumeD/D/1 queuing)

The principles of risk management are routinely applied in society (e.g. benefits of a drug vs. potential harmful adverse reactions in some patients). Risk management principles enable decision-makers to determine a balance between risk and cost to reduce that risk. The "safer" we engineer something, the more it costs. Using risk management, a "cutoff" point is decided upon, where further expenditures to further reduce risk are not "cost effective." Advances in instrumentation are allowing us to "discover" pollutants in treated wastewater that we couldn't detect previously due to their minute concentrations. The pollutants are introduced by human activity and many advocates they should, therefore, be removed, regardless of cost. The cost of removing minute traces of any pollutant is very high due to the low concentrations. The counter-argument is that the pollutants, previously un-measurable, have been in treated wastewater for generations and haven't caused harm.

Questions:

1. How should this be approached?

2. Does risk management have a role?

How to make your community's transportation needs safe and sustainable? Please provide examples to support idea of how to provide safe and sustainable transportation to improve the community's livability.

Please explain and with the examples for about one page long. Thank you

A 36" RCP (n=0.015) conveys 9.7 ft^3/s at a slope of 1.5%.
a. Calculate the depth of flow in the pipeline
b- Calculate the velocity of flow in the pipeline

1. A Design-Bid-Build project delivery approach overlaps the design and construction phases, whereas the Design-Build approach requires each phase to be completed before moving on to the next one.

1. True
2. False

2. Identify ALL that apply: Under the Design-Bid-Build delivery method, there are legal contacts between which of the following.

3. Owner-Engineer
4. Owner-Contractor
5. Engineer-Contractor

3. Identify ALL that apply: The CM at Risk is responsible for:

1. Means and Methods
2. Quality Assurance
3. Payment to Subcontractors
4. Safety

4. A General Contractor must be the employer of the electrical and mechanical trades to be considered a General Contractor.

1. True
2. False

1. The Owner’s ability to influence design and cost is highest at the construction phase.

1. True
2. False

2. The conceptual estimate is useful in the schematic design phase when design details are not available.

1. True
2. False

3. A Cost-Plus contract is considered a reimbursable type of contract.

3. True
4. False

4. An advantage of a Lump Sum Contract is that the owner assumes the risk of construction cost.

5. True
6. False

data:highrate trickling filter

pipe dia = 30m

deep = 1m

swage flow = 4.5mld

recirulation ratio = 1.4

bod of raw sewage = 250mg/l

bod removed in primary clarifier = 25%

efficiency?

(ans:74%)

3. Corrosion of reinforcement is function of external factors (environmental) and internal factors related to materials. What are these factors?

4. Polymer concrete may be used for new construction or repairing of old concrete. What is the main advantage over ordinary concrete.

5. Explain the main difference between asphalt pavement and concrete pavement

6.   a- What are the most common used bituminous materials for

                  pavement ?:

2. what are the types of petroleum asphalts are used in pavement construction.
3. Why asphalt fail and crack?

1.             Circle the correct answer of the following (True/False)
   1. Darcy’s velocity is a synonym to apparent velocity (T/F)
   2. The hydraulic conductivity of a porous media is a function of both porous media and fluid properties (T/F)
   3. Intrinsic permeability is related to the second power of the pore radius (T/F)
   4. Dynamic viscosity of a fluid is a synonym to kinematic viscosity (T/F)
   5. Dynamic viscosity of a fluid is a synonym to absolute viscosity (T/F)
   6. Average linear pore velocity is large than Darcy's velocity (T/F)
   7. Seepage velocity = pore water velocity = average linear velocity (T/F)
   8. Isolated water as dead-end pores or trapped gas don’t count when using effective porosity (T/F)
   9. Effective porosity is not available for flow (T/F)
   10. Productive aquifers should have high porosity and high transmissivity (T/F)
   11. Groundwater flows faster that surface water (T/F)
   12. Water table is the locus of points where water pressure is zero relative pressure (T/F)
   13. Aquiclude is a synonym to confining layer (T/F)
   14. Perched water table is a water table that forms below a restrictive layer near the soil surface (T/F)
   15. In confined aquifer, hydraulic gradient equals to the slope of the piezometric surface (T/F)
   16. In unconfined aquifer, hydraulic gradient is the water deriving force and equals to slope of water table surface (T/F)
   17. oceans lose more water by evaporation than they gain by precipitation (T/F)
   18. Land surfaces receive more water as precipitation than they lose by evapotranspiration (T/F)
   19. Residence time of lakes is lower than that in rivers (T/F)
   20. Residence time is the time required to replace a given ocean constituent by river supply (T/F)
   21. Residence time tells how quickly or slowly a river constituent can respond to a change in the constituent supply or removal rates (T/F)

Chapter 12 Questions (pg. 100)

12.1 What are of the reasons that a contractor would be disqualified from a bid for not being a responsible bidder

12.4 What is promissory estoppel How does it affect construction contracting practices

12.5 When and how does the us uniform commercial code apply to construction

12.12 Explain the difference between unit price and lump sum contracts.

Chapter 13 Questions (pg. 116)

13.4 Which of the standard contracts would be used most frequently during construction projects and why

13.6 Why are state and federal government agencies required to competitively bid all construction contracts

13.7 What are the mail components of construction contracts

Chapter 14 Question (pgs. 129)

14.3 Explain why construction needs to nominal, compensatory, and precatory damages.

14.12 How are owners allowed to make changes during construction What clause provides then with this ability

14.20 What are the ways in which a contract between during construction

Please provide an example of a Project Scope of a house construction

1. Compute L, T, E, LC, Δ (delta) and stations of the PC and PT for the circular curve with the given data of: R= 2200’ and M = 19.5075 and the P.I. station = 28+37.62. Express answers to .01 (ft.).

2. Compute L, T, E, M and Δ (delta) and stations of the and PT for the circular curve with the given data of: R = 2850’ ft. and LC = 985.7122 and the P.C. station = 62+34.17. Express answers to .01 (ft.).

3. Compute L, M, E, LC, Δ (delta) and stations of the PC for the circular curve with the given data of: R= 1250 and T = 237.637 and the P.T. station = 15+14.13. Express answers to .01 (ft.).

4. Tabulate the deflection angles and total chords on full (+00) and half (+50) stations to lay out the circular curve in Problem 1. 5. Tabulate the deflection angles and total chords on full (+00) and half (+50) stations to lay out the circular curve in Problem 3

Assuming Green-Ampt infiltration and: porosity = 0.5; initial moisture content = 0.2; saturated hydraulic conductivity = 0.65 cm/hr; wetting front suction = 5.5 cm and rainfall from 0-1 hr = 0.6 cm.hr and 1-2 hr = 3 cm/hr.

a) Determine the time ponding first occurs in this storm.

b) Determine the depth of infiltration at depth of runoff generated in each 1 hr interval.

c) What is the depth of the wetting front at the end of the two hour storm?

For the column and beam layout, find the required slab thickness and spacing of #4 reinforcing bars, if the loading in addition to self-weight, is 2 point loads of 2 kips at the third points of each span (4 point loads total) f'c =4000psi fy = 60ksi d = hSLAB - 1in,
weight of reinforced concrete is 150pcf, width of beams - 12in, space between borders of beams - 7ft.