A 35 ft simply supported beam is loaded with concentrated loads 15 ft in from each support. On one end, the dead load is 8.0 kips and the live load is 18.0 kips. At the other end, the dead load is 4.0 kips and the live load is 9.0 kips. Include the self-weight of the beam in the design. Lateral supports are provided at the supports and the load points. Determine the least-weight W-shape to carry the load. Use A992 steel and Cb =1.0. Design by (a) LRFD and (b) ASD. [6.16-34]

1. Consider a 400-MW, 32 percent efficient coal-fired power plant that uses cooling water withdrawn from a nearby river (with an upstream flow of 10-m3/s and temperature 20 °C) to take care of waste heat. The heat content of the coal is 8,000 Btu/lb, the carbon content is 60% by mass, and the sulfur content is 2% by mass.

v. If the cooling water is only allowed to rise in temperature by 10 °C, what flow rate (in m3/s) from the stream would be required? Is this sustainable? What would you recommend?

vi. What would be the river temperature if all the waste heat was transferred to the river water assuming no heat losses during transfer? Would that be a problem? Why or why not.

vii. Estimate the hourly SO2 emissions (in kg/h) from the plant assuming that all the sulfur is oxidized to SO2 during combustion.

What are Intensity Duration Frequency (IDF Curves)?

what is their used for and why do they matter in the engineering world?

What are the primary strengths or weaknesses of the method or concept?

What would have made it easier for you to understand the method or concept?   

Consider a concrete beam in an interior environment as follows: a. The beam is simply supported with a design span of 4.8 metres. b. The dead load in the beam is uniformly distributed. c. Dead load on the beam, in addition to its own weight, is 6.9 KN/m of which 75% is permanent (long term). d. The beam carries a single concentrated live load at mid-span of 70 KN. e. 20% of the live load is considered short term. f. The dimensions of beam are: b = 280 mm, d = 490 mm, cover c = 45 mm g. The beam only has tension reinforcement provided by 3 N20’s. h. f’c = 25 MPa fy = 500 MPa γc = 24 KN/m3 Determine: 1. The design ultimate moment in the beam M*. 2. The ultimate moment capacity of the beam øMuo. Is the beam ductile? 3. The serviceability moment in the beam ?? ∗ . 4. The Code allowable mid-span deflection. 5. The long term deflection at mid-span of the beam. Does it comply with the Code requirements?

For the shape shown below, calculate the moment of inertia about the x axis. (Figure 8)The dimensions are d1=345 mm, d2=160 mm, d3=120 mm, and r=80 mm.

For the shape from Part C (shown again here for reference), calculate the moment of inertia about the y axis.(Figure 8)The dimensions

IN Bull Run, why was Judah sent to the battlefront? What challenges did he face?

What is identity? Why is identity so important? What makes up one's identity? Is it the same for each individual? Is it different? Moreover, what makes up your own identity?

A triangular concrete (n=0.013) channel having a side slopes 2H:1V is designed to carry a flowrate of 200 cfs at a normal depth. The channel bed slope is 0.1%.

a) Determine the state of flow (regime).

b) Farther downstream the channel slope changes to 0.9%. Determine the new state of flow. c) Classify channel slope. Sketch the water surface profile from upstream to downstream sections.

Briefly explain geological conditions that negatively affect building foundation and discuss the corrective measure that should be taken to tackle the problems , with reference

Blending of wastes to achieve an optimum C/N ratio. Leaves, with a C/N ratio of 50, are to be blended with waste-activated sludge from a wastewater treatment plant, with a C/N ratio of 6.3. Determine the proportions of each component to achieve a blended C/N ratio of 25. Assume that the following conditions apply: moisture content of sludge = 75%; moisture content of leaves = 50%; nitrogen content of sludge = 5.6%; and nitrogen content of leaves = 0.7%.

What is the difference between Central Terminal with Remote Satellites and Central Terminal–Pier Satellites
Terminal configurations? In your opinion which is better and why?

Review the following and then analyze the conditions listed below and present how these conditions should be dealt with as claims to an Owner, that is what types of money cost/delay, etc., should be submitted as requests for change orders or claims:

• Base contact- $77,000,000 to build a twenty story building
• Contract schedule: complete in 300 days
• Liquidated damages = $7000/day
• Owner issued notice to proceed and contractor started work on September 9, 2013
• Contractor could not access site due to property rights issues until November 20, 2013
• Excessive rain and storms prevented work from proceeding for one week in November, 2013
• Excavation contractor did not begin work until December 12, 2013, two weeks after being asked to start work
• Excavation contractor started work and encountered soil containing cyanide and stopped work.
• Contractor notified owner of cyanide soil and indicated a change order for time and material costs were required to remove the cyanide soil
• Owner stopped the work to analyze the cyanide condition
• Owner issued a change order pricing request after two months of time
• Contractor responded to the pricing request indicating 3 months of extra time and $2,000,000 of cost was required
• Owner accepted cost request but denied extra time request

linked hybrid building for GF and Facade - GF interface

Approach and Entrance and Further explanation (i.e. problems/opportunities of approach/entrance)?

Thresholds and Further explanation (i.e. problems/opportunities of vertical/horizontal thresholds)?

Stepping Out of the Apartment: Extension of the Unit Outdoors and Further explanation (i.e. type of indoor/outdoor relations)?

Write out the Highway Project Development Process in order:

Please do MC thanks. 10. Which of the following is/are INCORRECT for the BOD test?
(a) Long time necessary to get results
(b) Only biodegradable organic matter can be measured
(c) Acclimated seed needed to get meaningful results
(d) Pre-treatment like dilution may be necessary for toxic wastes and nitrifying conditions
(e) None of the above
4
11. Find the theoretical TOC of 120 g/L glucose (C6H12O6) solution [Given molar mass of C=12,
O=16, H=1].
(a) 12 g/L
(b) 24 g/L
(c) 48 g/L
(d) 96 g/L
(e) 120 g/L
12. Facultative bacteria are able to work in the
(a) presence of oxygen only
(b) absence of oxygen only
(c) presence as well as absence of oxygen
(d) presence of water
(e) None of the above
13. A rapid and significant increase in filamentous organisms in the mixed liquor may be
expected to
(a) result in a far better effluent because of the great amount of surface area for absorption.
(b) plug up the return sludge pumps because the filaments hang upon valves and gasket
in the sludge line.
(c) lead to much denser return sludge because the filaments would tend to strain the
dispersed cells of ordinary organisms out of the effluent.
(d) cause bulking of the sludge solids to the point that some solids might be swept out that
results in turbid, poor quality effluent.
(e) lead to a much lower F/M ratio because the filaments are so totally insoluble.
14. Given the following information, determine the weight percent of volatile components:
Sample = 50 ml
Crucible weight = 21.6329 g
Crucible and dry solids weight = 21.6531 g
Crucible and ash = 21.6380 g
(a) 71.25%
(b) 72.65%
(c) 73.55%
(d) 74.75%
(e) 75.65%

15. Tube A is original sample containing 3000 bacteria/mL; 1 ml of this sample is diluted with 9 mL of sterile distilled water in Tube B; another same dilution practise is made from Tube B into Tube C and 2 mL from Tube C is then incubated on an agar plate medium. The bacterial colonies count observed in this agar plate after incubation would be (a) 15 (b) 30 (c) 60 (d) 120 (e) 300 16. Calculate the time it will take to increase the cell number from 104 CFU/mL to 108 CFU/mL assuming a generation time of 1.5 hr. (a) 5 hr (b) 10 hr (c) 20 hr (d) 40 hr (e) 80 hr 17. The total solids in wastewater would be a combination of: (a) Fixed solids and settleable solids. (b) Dissolved solids and volatile solids. (c) Dissolved solids and suspended solids. (d) Suspended solids and fixed solids. (e) Fixed solids and dissolved solids. 18. A batch reactor is characterized by (a) a constant residence time. (b) variation in extent of reaction and properties of the reaction mixture with time. (c) a very low conversion rate. (d) variation in reactor volume. (e) None of the above 19. Which of the following statement(s) is/are CORRECT for designing an attached growth process? (a) Low range of organic loading rate determined by sufficient food for bacteria (b) High range of organic loading rate determined by oxygen limitations (c) Low range of hydraulic loading rate determined by adequately wetting biofilm (d) High range of hydraulic loading rate determined by biofilm and ponding (low oxygen) (e) All of the above 6 20. Which of the following is a CORRECT statement to describe the complete-mix activated sludge plant? (a) Because of the complete-mix circumstance, the term “mean cell residence time” has no meaning. (b) Because of the complete-mix circumstance, the F/M ratio cannot be calculated. (c) The F/M ratio is significantly higher near the inlet end of the aeration basin than near the outlet of the aeration basin. (d) The rate of oxygen uptake per unit of activated sludge is about the same throughout all of the aeration basin. (e) None of the above.