You are making a decision between three (3) competing bids for a new road construction. Describe and discuss the engineering decision making tools that you might employ to help you decide on the best proposal.

For the following situations, choose a modeling method and explain why you would use it.
a. Designing a prosthetic limb

b. Routing a piping system for a building

c. Designing a one-of-a-kind machined part

d. Verifying clearances for an electrical substation located near an airfield

e. Mapping an oil reservoir

Make a search about a materials used on engineering (Civil Engineering), the search must includes:
The type of materials which used to fabricate the device
The structure type
The composition
The function
The advantage
The disadvantage
The limitation of used
The problem in service
The new research on the field

1- There is mainly four kinds of behavior under stress which is Elastic, Plastic ,Viscous ,and Brittle: which of these behavior soil can be categorized ,Explain for each case:-
a)Elastic

b)Plastic

c)Viscous

d)Brittle

2-Soil Stress-Strain Behavior can be expressed by :-

a)Linear ELASTIC

b) NON Linear Elastic

c)Elasto-Plastic

d) Elastic Perfectly Plastic

Draw the Stress Strain Curve that describe each case; and mention the main characteristic of each curve.

A wing component on an aircraft is fabricated from an aluminum alloy that has a plane strain fracture toughness of 30 MPa (m) 1/2 . It has been determined that fracture results at a stress of 120 MPa when the maximum internal crack length is 8.4 mm. For this same component and alloy,

Compute the stress level at which fracture will occur for a critical internal crack length of 5.6 mm?

Design a steel flexural member that is continuously braces and 12 feet long. There is a uniformly distributed live load of 1 k/ft, and uniformly distributed dead load of 1 k/ft and a concentrated live load of 8.4 kips at a distance of 5 feet from the left support. use 36 ksi steel.

Ethics Class

Chapter 14 Discussion questions:

Discuss bioethics? Discuss health care professionals and patients & their families-rights & obligations. Discuss truth telling and informed consent. Discuss intercultural bioethics. Discuss ethical issues in medicine. Discuss human experimentation.

There are concrete structures and projects in the following, try to select the proper cement and explain the reason
1/Cast in place beam
2/The prefabricate parta conserved by autoclave method
3/Urgent salvaging projects or urgent military engineering
4/Mass concrete dam and the Foundation fpr large scale equipment
5/The underground Engineering that can be corroded by sulfate
6/The basis for blast furnace

Describe the distinction between Balloon Framing & Platform. 250 words, please.

A CMFR will be used to reduce the concentration of chloroform(CHCl3) in water. Chloroform is a disinfection by-product that is formed when chlorine is used to disinfect water; it is a concern because it can cause cancer.The influent water contains 60 ppb chloroform and the Wisconsin State standard is 6 ppb. Chloroform decays in the reactor at a rate of 0.2 hr-1 and the water flow rate is 100 L/day.

Treating the water to meet the Wisconsin standard will reduce the lifetime cancer risk for ingesting the water to 10-5.Although this is within the range of the EPA risk guidelines (10-4to 10-7), the public is concerned about the presence of a carcinogenic compound in their water. Determine the size (in L) of the reactor necessary to achieve (a)a risk of 10-5(6 ppb) and (b)a risk of 10-7(0.06 ppb).How do the two reactors compare? Do you think it will be worth the extra cost to reduce the risk from 10-5to 10-7?

Required: write a summary between 90 and 120 words for the following task.

Task A

What makes a work of architecture great? Most people would say that aesthetics are most important. For example, many people agree that the Eiffel Tower in Paris and the Blue Mosque in Istanbul are beautiful structures. It is true that aesthetics are important; however, according to the Roman architect Marcus Vitruvius Pollio, there are two additional principles that we should consider when judging a structure. They are durability—how strong and long-lasting a structure is designed to be—and function— how well the structure serves its intended purpose. The new Rostonville Library in my city is a good example of Vitruvius's principles because it is durable, functional, and aesthetically pleasing.

The Rostonville Library, which is built entirely of granite—a hard and very tough stone—is an example of durability. Granite is likely to remain strong and unaffected by environmental pollution. The copper color offers an interesting contrast to the light gray color of the granite structure, and the contrast will remain as the copper ages.Granite structures are stable and resistant to vibrations, so the Rostonville Library will likely be able to withstand an earthquake. The Rostonville Library is also durable in terms of sustainability, because it uses solar energy for heating, and a rooftop garden provides insulation that keeps the building cool in hot weather.

Designed to provide free access for members of the community to a variety of print and digital information, the Rostonville Library is also an example of Vitruvius’s principle of functionality. The Rostonville Library conveys a feeling of openness and accessibility. For example, it is resistant to acid rain.Furthermore, the entire library is on one level, and it has an open design—there are no interior walls or dividers. In addition, large windows let in plenty of natural lights, so it’s easy to see and get to each department within the library.

Finally, the Rostonville Library is beautiful. Aesthetically pleasing details make it attractive, both inside and out. The large windows are framed in copper. For example, it has large double doors that are at street level; there are no stairs at the entrance. Growth from the rooftop garden, which cascades down the sides of the building, adds to the aesthetics of the building. It softens the lines of the structure and helps it to blend into its natural surroundings.

Durability, functionality, and beauty make the Rostonville Library a great structure. Architects and designers follow Vitruvius's principles help to make urban environments more pleasant places to live. Structures that exemplify these criteria provide peace of mind as well as beauty for the people who use them.

Discuss the salient features of Chapters Two, Three and Eight of Building Fire Prevention and Protection requirements (BFPPR), Document no. 77/2002 by Directorate General of Civil Defense??

What thickness of a concrete masonry wall with limestone aggregate provides a fire-resistance rating of 5.0?