8. A water treatment plant with a surface water intake source is being designed for a municipality that has a water demand of 18 million gallons per day (MGD). It has been determined that the maximum daily summertime water temperature is 20oC, and the minimum daily wintertime water temperature is 5oC. It has been determined that the design of the disinfection system must achieve 2.5-log credit for Cryptosporidium removal or inactivation. Ozone will be used as the disinfectant with a concentration of 0.4 mg/L. If the contact basin is designed with three separate tanks in parallel, what volume should each tank be? In formulating your answer, use the Ct table specified in LT2ESWTR (provided below). Assume that the contact basins will behave as ideal plug flow reactors.

A facility emits 18 g SO₂ /s at an effective height of 60m. On a cloudy night, an anemometer at a height of 10 m above ground measures the wind-speed at 3.2 m/s.

1. Predict the ground-level SO₂ concentration 0.4 km directly downwind. (60 pts.)
2. What does the plume look like? Sketch a plot. (20 pts.)
3. What would the plume look like if there were an inversion layer at an elevation of 100 m? Sketch a plot. (20 pts.)

If a ground water contains H2S at concentration of 2 mg/L, determine the concentration of H2S in head space of a closed tank containing the ground water at at 20 ^oC. Given that for H2S, Henry’s constant (H) is equal to 5.15×10² atm at 20 ^oC.

Prepare a project plan for 'Project Infiltration' by illustrating the logical sequence developing of a Project Plan. Make use of a diagram to illustrate the Project Plan.

Using the information in the Case Study, compile a WBS (work breakdown structure) for all the tasks included in 'Project Infiltration'. Draw a bar chart to suit the tasks for 'Project Infiltration'.

Explain the characteristics of the bar chart, and briefly discuss the shortcomings of a bar chart. Discuss the shortcomings of 'Project Infiltration' bar chart.

Draw a Project Network Plan for 'Project Infiltration' and indicate how the duration should be calculated. Calculate the float and explain the advantage of a float

CASE STUDY: PROJECT MANAGEMENT
GPM was established in 2010 by three young entrepreneurs. You and two friends registered a closed corporation (GPM-Consultants cc), and the core deliverable (or service offered) is managing projects on behalf of medium to large organizations and enterprises.The assignment that needs to be submitted for marking is about you managing a project on behalf of a GPM-Consultant cc client: TECNI Wholesalers. TECNI Wholesalers' brief (what they want done) to you is as follows: TECNI Wholesalers is currently only operating in the major provinces of South Africa. These are – Gauteng, Western Cape, and KwaZulu-Natal. They have just completed a major investment process, and organisation expansion. TECNI Wholesalers has obtained the services of GPM-Consultants cc to manage 'Project Infiltration', which will result in TECNI Wholesalers operating in all nine provinces of South Africa, and increasing their supplier base from 68 retail stores to 850 retail stores country wide. TECNI Wholesalers currently has a staff complement of 147; 72 at the head office in Sandton, Gauteng, and 25 each in a distribution depot per province, and this includes the drivers. They have 14 medium-sized trucks for deliveries (6 in Gauteng, and 4 each in KwaZulu-Natal and the Western Cape). TECNI Wholesalers cc has allocated R4.8 million to 'Project Infiltration'. This amount includes GPM Consultants cc fee (10% of gross project value), with the following specifications: Setting up and staffing distribution depots in every one of the six provinces they are not currently operating in. This includes the expansion of head office to accommodate the servicing of the additional depots country wide.
 Suitable premises acquisition in Mpumalanga; Limpopo, Eastern Cape
 Suitable premises for rent, with a paid upfront 12 month contract
 Recruit suitable staffing requirement for each province
 Purchase suitable vehicles and trucks for each depot
 Furnish and equip depots
 Arrange for suitable insurance cover
TECNI Wholesalers has allocated an additional R5 million for stocking the warehouses with the products that they sell and distribute.

Informed by the forum and the assigned material, identify how oppositional cultural spaces around you are simultaneously separated and interconnected. Where is there evidence of borderlands? Of hybridity?

Problem 2: A rectangular concrete beam measures 350mm wide and has an effective depth of 425mm. Compression steel consisting of two # 25 is located 65mm from the compression face of the beam. If f ′ c=28MPa and fy = 420MPa, what is the design moment capacity of the beam, according to the ACI code, for the following alternative tensile steel area. (a) As = 3 # 32 bars in one layer, (b) As = 5 # 29 in two layers, (c) As = 6 # 32 bars in two layers? (Note: check for yielding of compression in each case.).

Problem 2: A rectangular concrete beam measures 350mm wide and has an effective depth of 425mm. Compression steel consisting of two # 25 is located 65mm from the compression face of the beam. If f ′ c=28MPa and fy = 420MPa, what is the design moment capacity of the beam, according to the ACI code, for the following alternative tensile steel area. (a) As = 3 # 32 bars in one layer, (b) As = 5 # 29 in two layers, (c) As = 6 # 32 bars in two layers? (Note: check for yielding of compression in each case.).

(1) Select the lightest, rectangular Douglas fir section for the cantilever beam of15- ft span that will carry a uniform load of 450 lb/ft. [Hint: V max = wL; Mmax = wL2/2]

•by drawing to explain what effective working width of bridge deck is
•what is a steel concrete beam bridge? list three kinds of connectors by drawing

City Q has an average water consumption of 22000 m3 / day. Jar tests have indicated that 33 mg / L of hydrated aluminum sulphate "alum" [Al2 (SO4) 3.14H2O] is the optimum dosage required to treat the water supply to this town. The additional alkalinity used is HCO3-. The natural alkalinity in the untreated water source is 57 mg / L as CaCO3. Use the coagulation reaction to:
a. Determine the amount of coagulant used per day (in kg / day)
b. Determine the amount of precipitant generated per day (in kg / day).
c. How much alkalinity is being consumed during the coagulation / flocculation process (in mg / L CaCO3)? Is the natural alkalinity level adequate?

correct statement about contaminant transport?

1. Advection refers to contaminant transport with flowing water.
2. Both diffusion and mechanical disperion are associated with concentration gradient.
3. Sorption refers to the process of contaminants sorbed to the solid phase.
4. Sorption process follows a linear sorption isotherm in the range of high concentration of contaminant.

(e) Discuss how the systems approach could be used to carry out any task at that phase.

(f) What role do analytical tools play in the use of the systems approach to carry out that task?

          (g) What feedback does the engineer typically provide to engineers at the preceding phases?