Find an expression for the average velocity in a smooth pipe if it depends on the viscosity, the diameter, and the pressure gradient dp/dx.
In: Civil Engineering
In: Civil Engineering
A westbound section of freeway currently has three 12-ft wide lanes, a 6-ft right shoulder, and no ramps within 3 miles upstream and downstream of the segment midpoint. It is on rolling terrain with 10% heavy vehicles and is operating at capacity with a peak-hour factor of 0.9. If the road is expanded to four 11-foot lanes with a 2-foot right shoulder, and traffic after the expansion is projected to increase by 10% with the same heavy vehicle percentage and peak-hour factor, what is the new LOS and estimated density?
In: Civil Engineering
On a late May afternoon in 1984, a fire broke out in the “Haunted Castle” attraction at the Great Adventure Park in Jackson Township, New Jersey (Figure 4-1). Eight teenagers became trapped in the haunted house and subsequently died in the blaze. The maze-like “building” was actually a set of 17 interconnected truck trailers; guests walked from one trailer into the next. The dark walk-through haunted house included a variety of fright-provoking scenes, live actors, and a “strobe room.” Plastic polyurethane foam was used in decorations in various areas of the attraction. Plywood partitions were also present throughout. The structure did not have a fire alarm system or a fire sprinkler system. There were no specific regulations for “haunted houses” in the building and fire codes of New Jersey or the rest of the nation at the time of the fire. In the wake of this incident, action on the part of the state of New Jersey was swift. The state’s building and fire codes were changed to include fire alarm systems and sprinklers. These regulations were quickly adopted nationally. Today, these “special amusement” buildings require a fire alarm and detection system, full sprinkler protection, a public address system, low-level exit signs, and a Class A rating for all interior finishes. 1. Why does it often take a tragedy to change our building and fire codes? 2. What are some other fires in the past that have led to changes in our fire safety regulations?
In: Civil Engineering
List the stages of Cost Estimating and tell how the accuracy changes for these different stages?
In: Civil Engineering
Explain why electrical, mechanical, and plumbing rough-in usually begins before framing is complete.
In: Civil Engineering
Give an example of a project where work sampling would be an appropriate productivity measuring technique.
In: Civil Engineering
Flow rate |
= |
20 000 m3/day |
Minimum temperature of the area |
= |
34◦C |
Medium height |
= |
2 m |
Influent BOD |
= |
300 mg/L |
Effluent BOD |
= |
20 mg/L |
Recirculation flow rate to the tower |
= |
35 000 m3/day |
Wastewater treatability constant |
= |
0.09 min-1 at temperature 20◦C |
Medium coefficient |
= |
0.5 |
Compute:
In: Civil Engineering
Problem 2: A 3 ft x 5 ft (B x L) rectangular footing is shown in following figure. Using generalized bearing equation (with shape, depth and inclination factors), determine the allowable (safe) load that the foundation carry. Given: gamma = 115 lb/ft3 , c’= 1100 lb/ft2 , phi’ = 35°, Df =3.5 ft, Ground water table is located at 5 ft below ground level. Assume factor of safety = 3. Assume gammasat = 127.4 lb/ft
In: Civil Engineering
Curve 2: A +7.00% grade meets a -6.00% grade at station 4+80 and elevation 705.70 ft, 80-ft curve, staked 10ft apart. Get a rough estimate in cubic yards of how much soil that must be brought in (fill) and/or removed (cut) to create a 14-foot wide roadway that starts at your PVC/BVC, ends at your PVT/EVC, and follows your curve elevations. Make sure to state which curve your group was assigned in the calculations. Trapezoidal Area Estimation is key. ground has the following elevations starting from the PC and ending at the PT; 702ft, 703ft, 704ft, 705ft, 706ft, 705ft, 704ft, 703ft,and 702ft.
In: Civil Engineering
In: Civil Engineering
Describe the cost values of desalination concentrate management, find the calculations and Show in detail in kWh / m3 and $ / m3 for each method.
(please don't take copy paste on others answers on chegg. .)
In: Civil Engineering
Discuss the changes that happen when a culvert is put into a channel
In: Civil Engineering
Mr. Paul has been working as a mechanical engineer in a well-known oil and gas firm, Toyo Engineering, for 15 years. Toyo Engineering has been awarded with a project to design and build a ship for use in offshore installation works in Terengganu, Malaysia. Due to Mr. Paul’s excellent project management skills, the company has appointed him as the Project Manager for this particular project. As a Project Manager, Mr. Paul has to deal with various vendors who are bidding to be the potential suppliers of the various items in the to-be-built ship. He has to keep close relation with all vendors to ensure that the supply of equipment and materials are on schedule for the timely delivery of the ship. Since Mr. Paul has been working in the oil and gas field for about 15 years, it happens that some of the vendors are his friends who have been working with him previously in various projects.
(c) Analyze how Mr. Paul should respond and act in the ethical dilemmas that you have identified in Q1(b) above.
(d) Outline the action to be taken by Paul in protecting his company interest while complying with BEM codes of professional conduct.
In: Civil Engineering