Starting from the linearized, perturbed, stability equations of a normal mode for nearly parallel viscous flows, apply Squire’s transformation and derive the stability equations.
In: Civil Engineering
A 1000-ft vertical curve connects a -1% grade to a -3.5% grade. If the vertical tangents intersect at sta. 38+60.24 and elevation 1,400.13 ft, develop an Excel spreadsheet to calculate the elevations of the grade line at each station from sta. 31+00 to 45+00. Include the elevations of the PVC and PVT.
In: Civil Engineering
We designed the water flow rate to supply water to the increased
population in New Jersey in 2020 and the trapezoidal canal that
conveys the increased amount of water resources like Figure 2. The
concrete-lined canal (n=0.015) is to have a B (bottom width) /yn
(B/yn) of 2.0, 2H:1V side slopes and a velocity of 5.0 feet/s. The
normal water depth is 3.75 ft and the longitudinal slope is
0.000825.
2.1. When the depth of flow at the gaging station is observed to be
4 ft, classify the water surface profile at the gaging station.
2.2. Is it possible for a hydraulic jump to occur at the gaging station?
In: Civil Engineering
Suppose water is leaking from a tank through a circular hole of area
Ah
at its bottom. When water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cAh
| 2gh |
, where
c (0 < c < 1)
is an empirical constant.
A tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (Assume the removed apex of the cone is of negligible height and volume.)
(a)
Suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. The differential equation governing the height h in feet of water leaking from a tank after t seconds is
| dh |
| dt |
= −
| 5 |
| 6h3/2 |
. In this model, friction and contraction of the water at the hole are taken into account with
c = 0.6,
and g is taken to be
32 ft/s2.
See the figure below.A right-circular conical tank containing water is shown.
If the tank is initially full, how long will it take the tank to empty? (Round your answer to two decimal places.)
14.31 minutes
(b)
Suppose the tank has a vertex angle of 60° and the circular hole has radius 3 inches. Determine the differential equation governing the height h of water. Use
c = 0.6
and
g = 32 ft/s2.
| dh |
| dt |
=
If the height of the water is initially 11 feet, how long will it take the tank to empty? (Round your answer to two decimal places.)
In: Civil Engineering
Given , f'c to the power of apostrophewhat is the maximum usable strength of the concrete when designing beams?
In: Civil Engineering
In: Civil Engineering
A steel storage tank 20m in diameter will be used to hold liquid petroleum product. When filled, the tank causes a bearing pressure of 150kPa. The soil underlying the tank has a unit weight of 16.5kN/m3 above the water table and 19.8kN/m3 below the water table. For a depth of 10m below the base of the tank, compute the effective vertical stress when the tank is empty and when it is full, for points under the center and the edge. (Assume the base of the tank is on the ground surface and ground water table, GWT, is 5m below the ground surface. Ignore the empty weight of the tank).
In: Civil Engineering
I would like to be a civil engineering designer
What are the fundamental subjects taught in civil drafting. please
what should I study first, second, third........till professional
civil designer.
In: Civil Engineering
An asphalt rectangular channel is 7m wide and has a slope of 1° . The water is 1.5m deep. Find the discharge rate for uniform flow. What is the radius of an asphalt cylindrical channel, which is half-full, to give a similar discharge rate?
In: Civil Engineering
Please read the case study from your textbook - Baker v. Fennenam & Brown Properties, LLC and Southern Bells of Indiana, Inc., all d/b/a Taco Bell (pg. 175, Case Study 5 - 15).
1. Do you agree with the court's determination that Taco Bell should provide reasonable assistance to Baker even though Taco Bell was not responsible for his illness? Why or why not?
2. What is the public policy underlying the court's decision?
In: Civil Engineering
Conduct research on one of the first built tombs in the world. The selected tomb should have a superstructure. Specifically, focus on the, Evidential, Historical, Aesthetic and Communal Values of the tombs. In other words, determine the specific futures of a tomb in relation to their evidential, historical, aesthetic, and communal values
Architect, architectural features, construction year and duration, construction materials, construction type, structural features, construction purpose and the features that make it different and significant and the importance of the construction for the society should be included and explained under the headings of Evidential, Historical, Aesthetic and Communal Values in the report. You should illustrate your explanations with photographs which should be referred in your report.
Prepare a maximum 350-words long document
In: Civil Engineering
In: Civil Engineering
Though steel have high tensile strength, detailing is necessary not only for the steel structures but also for the RCC members as it is the translation of all the mathematical expression’s result. For that matter, coin a comprehensive definition for detailing of reinforcement bar (steel).
In: Civil Engineering
A polymer rod is tested to determine its viscoelastic response. The rod’s cross-section is square with the side of 5mm. The rod’s length before loading is 500mm. A tensile force of 500N is applied to the rod and the rod’s length under load was measured as a function of time. Instantly after applying the load, the rod is stretched to 508mm. After 24 and 48 hour under load, the rod’s length was measured as 550mm and 570mm, respectively. The load was then removedand the rod’s length was measured as 525mm after a long time after the removal of the force (consider this as the permanent length). Determine the parameters of the Burger’s model for describing this type of mechanical behavior.
In: Civil Engineering