4.2 A 200 m long sag curve is used under a grade separation structure. The curve joins an entry grade of - 3% and exit grade of + 5%. If the required vertical clearance is 5.5 m, determine the available sight distance over the curve. Assume driver eye height and dangerous object height of 1.8 m and 0.15, respectively. If the information available is not complete, please assume and specify a reasonable value and continue with the assignments.

3.During a fire inspection, you note carpeting on the interior walls of day care center. What should you do to deal with this situatuion?

(Chapter 6 from the book: Brannigan's Building Construction For The Fire Service)

1. Whistleblowing by engineers involving in a project is very crucial as it may prevent untoward incident due to ethical problems. Describe in detail the importance of whistleblowing in the engineering profession. Choose a real-life instance where whistleblowing has helped to curb ethical violations in engineering and discuss the lessons which professional engineers can learn from it.

There are two common methods used for analyzing a truss. Briefly discuss both methods with the aid of diagrams.

Several students were interested in using tempered glass as an additive for a portion of the fine aggregate in a Concrete Mix Design. They stated tempered glass has a high compressive strength and is an available resource. Their Control mix was to be 5 pounds of Coarse Aggregate, 5 pounds of Fine Aggregate, 2.5 pounds of cement, and 1.2 pounds of water. Their research idea was to use 5 pounds of Coarse Aggregate, 2.5 pounds of Fine Aggregate, 2.5 pounds of Textured Glass, 2.5 pounds of cement, and 1.2 pounds of water. After the curing process and the compression tests the control mix was 84,000 pounds or 6700 psi; the proposed new mix was 69,500 pounds or 5500 psi. Does the new idea show promise (Yes or No)? Where does one go from here? Explain your answer?

What is an Expert Witness? What is the purpose of an Expert Witness? Who can be an Expert Witness? What qualifies a person to be an expert witness?

Would Portland Cement Concrete from the Demolition of a 50-year old concrete building structure and surrounding concrete parking lot, make for a good supply of recycled aggregate? What are the Pro’s and Con’s of using Recycled Aggregates?

In Proportioning Asphalt Mixtures, what is one seeking, to ensure a quality roadway? What properties of the final mix must be met? Explain your answer.

A Concrete Mix Design Example was completed for the class. Explain how one makes a correction for Water in a Mix Design and the important factors associated with such a correction.

What is the importance of a Particle Size Distribution Curve for Soils? What is it used for engineering wise? In addition, explain fully the Uniformity Coefficient, the Coefficient of Curvature, the Effective Size, D10, D30, D50, D60.

Explain the Water to Cement ratio effect on the Compressive Strength of Concrete Cylinders. What is the normal range of the Water to Cement ratio utilized in a concrete mix design?

Prepare a short report that technically and economically evaluates the differences between ZLD (zero-liquid-discharge) and MLD (minimum-liquid discharge) methods, which are also application areas in desalination facilities.

In desalination plants using RO membrane modules. Prepare a short report stating the chemicals used for pre-treatment, post-treatment and membrane cleaning (CIP, clean-in-place) stages and their intended use.

Assume you have been designated as a building designer. Answer the following questions:

• What type of building are you designing?
• What low-energy buildings strategies would you use (identify a minimum of four strategies)?
• How do you give priority to some of these strategies (identify a minimum of three criteria for priority setting)?
• What is your reasoning for each strategy?