Convert the water quality data below to make a diagram allowing you to quantify the 4 categories of hardness for the water, all in mg/L as CaCO3. Also use units of mg/L as CaCO3 to determine the amount of CaCO3 formed, then convert it to meq/L and mg/L. Finally, if the influent flow rate is 17 MGD, determine how many pounds per day of CaCO3 are produced. Attach all work and fill in the blanks too*.

Mg2+ = 17 mg/L

Ca2+ = 63 mg/L

HCO3- alkalinity = 80 mg/L as CaCO3

CaCH = _____________ mg/L as CaCO3

MgCH = _____________ mg/L as CaCO3

CaNCH = ____________ mg/L as CaCO3

MgNCH=____________ mg/L as CaCO3

CaCO3 = ___________ mg/L as CaCO3


CaCO3 = ___________ (meq/L)
CaCO3 = ___________ (mg/L)


CaCO3 = ____________ (lbs/day)

ignore excess lime dissolved CO2

explain three advantages and three disadvantages of using composite materials with examples.

Which of the following is NOT a method of source reduction? Select one:

a. Recycling

b. Making packages that weigh less

c. Incineration

d. Municipal composting

1. Read the following statement carefully: “The concepts of probability and statistics are powerful ones and contribute extensively to the solutions of many types of engineering problems”.

Answer the following: Why, in your own words, do you think in your specifically engineering professional practice, probability and statistics will help you to be successful?

1. Tom is a civil engineer and working in a large construction project. Tom was assigned by his manager to look for steel suppliers for the project. Tom placed a newspaper advertisement for potential suppliers to bid. A potential supplier approached Tom, indirectly requested Tom to buy steel from his company. Then he invited Tom to an expensive dinner and a boat tour. Tom was planning to accept the dinner invitation and boat tour. (a) Identify the ethical situation in this case (if any) (b) Explain what Tom should do (c) Mention the relevant Rule of Practice or Professional Obligation (if any)

2. Nathan and Bill are electrical engineers. They are colleagues and working for a reputed private firm. One day Nathan saw that his colleague Bill is accepting a new laptop as a gift from a material supplier. Next day, Nathan talked with Bill about this and told him that this is not appropriate. Bill did not care. After a couple of months later, Nathan got to know that the same supplier has arranged a vacation (i.e., air ticket, hotel etc.) in Hawaii for Bill. (d) Identify the ethical situation in this case (if any) (e) Explain what Nathan should do (f) Mention the relevant Rule of Practice or Professional Obligation (if any)

Discuss the prevalence of the use of earned-value analysis to track and control costs on construction projects?

1. Draw the Transit System Mode Comparison Capital Cost per km ( MUSD) versus Capacity ( passengers /hr / distress ) of BRT, LRT, Monorail and MRT.

2. State the four strategy for sustainable Urban Transportation System.

It belongs to Transportation Engineering
Need it urgently !

The National Society of Professional Engineers (NSPE) has established guidelines for the ethical practice of engineering. Discuss how these guidelines would apply to (a) an engineering company, and (b) an individual engineer working for an industrial firm.

Describe the importance of professional engineering licensure with reference to the benefits one gets, added responsibilities, and the ethical standards of practice that one needs to maintain.

what is (Beams: Internal Resultant Loadings)?,, at least 2pages of information, and methoods of determination,thank you

PQRST steps

In any design of hydraulic structures, a safety factor should be included. Describe what a safety factor is and why it is crucial in the design. This question is open-ended. Therefore it must be supported by relevant literature.

Deflection may occur due to many factors such as construction error, settlement, excessive loading and temperature. Comprehensively explain deflection of reinforced concrete relating to slabs.

What magnetic bearing is needed to retrace a line for the conditions below..