Questions
A confined aquifer 250m thick has bulk modulus of compression of 2.1x103kg/cm2 and porosity of 23%....

A confined aquifer 250m thick has bulk modulus of compression of 2.1x103kg/cm2 and porosity of 23%. Given the bulk modulus of elasticity of water is 2.4x104kg/cm2 and specific
3
weight of water as 1000kg/m , Determine
A. The storage coefficient of the aquifer. B. Specific storage of an aquifer

In: Civil Engineering

Consider modeling the following systems A-D: A. The water system for a farm growing corn; B....

Consider modeling the following systems A-D:

A. The water system for a farm growing corn;

B. The energy system of the Engineering Building at a University

C. The food production system of a Detroit urban garden growing tomato;

D. The integrated food-energy-water system of one household.

Please describe 1 – 4) for each system:

  1. The system boundaries (you can use graph to show system boundaries);
  2. the main components of the system and functional interactions between components;
  3. external factors and their interactions with the system; and
  4. the most significant issues that might alter the stability of the system.

In: Civil Engineering

If the flow rate of soil waste is 205 GPM, what size drainpipe will be needed...

If the flow rate of soil waste is 205 GPM, what size drainpipe will be needed for:

a. A slope of 1/2 inch per foot of fall? What is the flow rate of the drainpipe selected?

b. A slope of 1 ∕8 inch per foot of fall? What is the flow rate of the drainpipe selected?

In: Civil Engineering

A 3 m tall, 30 m wide, road embankment made of rockfill with a unit weight...

A 3 m tall, 30 m wide, road embankment made of rockfill with a unit weight of 20 kN/m3 is to be constructed over a 30 m thick normally consolidated clay layer resting on a very permeable fracture rock bed. The clay layer has a coefficient of consolidation cv=7 m^2/month, and a unit weight of γsat=18.5 kN/m3. The compression characteristics of the clay are mr=120, and m=12.

a) Determine the time required for the remaining consolidation to be 25 mm or less (allowing completion of the road surface) (hint what is U?).

b) How high should the surcharge embankment be to achieve the same consolidation in 6 months (to the nearest 0.5 m)?

c) What would the wick-drain spacing be to achieve the same results as in b) but with only half the surcharge height?

In: Civil Engineering

How did modern construction learn from ancient constructions, building materials and technologies? How could the oldest...

How did modern construction learn from ancient constructions, building materials and technologies? How could the oldest building materials be applied to today’s construction? Or could it be modified to fit our needs?

In: Civil Engineering

Design for britishcode 8110 Design a square pad footing for a 300 mm square column supporting...

Design for britishcode 8110

Design a square pad footing for a 300 mm square column supporting a factored axial load of 800 kN. Safe bearing capacity of soil is 200 kN/m2, fcu=20 N/mm2, fy=415 N/mm2.Design a square pad footing for a 300 mm square column supporting a factored axial load of 800 kN. Safe bearing capacity of soil is 200 kN/m2, fcu=20 N/mm2, fy=415 N/mm2.

In: Civil Engineering

1. Solve quadratic equation Ax^2+Bx+C=0 using the quadratic formula x = (-B+ and - sqrt(B^2-4ac)) /...

1. Solve quadratic equation Ax^2+Bx+C=0 using the quadratic formula x = (-B+ and - sqrt(B^2-4ac)) / 2a) and output the two solution with clear explanation

could you please do it in MATLAB

In: Civil Engineering

· Assuming no earth atmosphere, what the expected temperature of the earth would be? How this...

  • · Assuming no earth atmosphere, what the expected temperature of the earth would be? How this temperature could be estimated?
  • · Most notable CO2 monitoring station is at Mauna Loa Observatory in Hawaii. Why the CO2 concentration changes with season during the year?
  • · With current rate of CO2 addition to the atmosphere, assuming this rate is constant, how long it will take to double the CO2 atmosphere concentration?
  • · What kinds of effect the global warming may have on the living environment of human being?
  • · List 5 important greenhouse gasses.
  • · What are the stabilization wedges? Can you list 5 of them?
  • · Under the Paris Agreement within the United Nations Framework Convention on Climate Change, what is the targeted temperature increase above pre-industrial levels the world try to limit to?

In: Civil Engineering

A prestressed concrete beam with a rectangular sectin 120 mm wide by 300 mm deep supports...

A prestressed concrete beam with a rectangular sectin 120 mm wide by 300 mm deep supports a a live load of 3 kN/m. The spanning over 6 m is prestressed by a straight cable carrying an effective prestressing force of 200000 N located at an eccentricity of 55 mm, the density of concrete 24 kN/m3. Find : (1)- The resultant stress distribution for the centre of span cross section of the beam (2)- the presressing force which can balance the stresses due to dead load and live load at the soffit of the centre span section

concrete
ahave answer after 30 minuts please

In: Civil Engineering

Please answer both parts of this question. Please answer both parts of this question. Question: a)...

Please answer both parts of this question.
Please answer both parts of this question.

Question:
a) The channel in question 2 now has a 0.3m high smooth extended shelf built across its base to cover a submerged pipeline but still carries 50m3/s. Plot the specific energy diagram for 0 < y < 4m and calculate the critical depth and minimum specific energy. What are now the two possible flow depths for a specific energy of 4m upstream of the obstructions?

Correct Answers are: (0.833m & 3.54m)

b) A grass-lined triangular channel has side slopes of 1 vertical to 5 horizontal and slopes at
1:1000 for a design flow of 4m3/s. What is normal depth? If water depth is 0.6 m when the discharge (flow rate) is 2m3/s. What is the Specific Energy? What is the Froude Number? Is the flow subcritical or supercritical? What is the critical depth? Classify the slope.

Correct Answers are: (1.14m, 0.606m, 0.46, subcritical, 0.22m, mild)

In: Civil Engineering

In the design of a multiple bay mill-type industrial building with a separate metal processing and...

In the design of a multiple bay mill-type industrial building with a separate metal processing and finishing shops, what is the buildability criteria which you will use to base the structural lay-out and design of the building? Explain in details.

In: Civil Engineering

A rectangular concrete beam of width b= 600 mm, is limited by architectural considerations to a...

A rectangular concrete beam of width b= 600 mm, is limited by architectural considerations to a maximum total depth h= 400 mm. It = 542 kN.m. Design the umust carry a total factored load moment Mflexural reinforcement for this member, using compression steel if necessary. Allow 75 mm to the center of the bars from the compression or tension face of the beam. Material strengths are ??′=27.6 ??? ??? ??=413 ?? ?.
Select reinforcement to provide the needed areas, and show a sketch of your final design, including provision for No. 13 stirrups.

In: Civil Engineering

An essay about rajendra singh, a respected man from India working with water and river issues...

An essay about rajendra singh, a respected man from India working with water and river issues in india. And please provide me with references to what you wrote and we can’t use Wikipedia

In: Civil Engineering

Sketch and explain the two components of primary and secondary moments. Explain how we use design...

Sketch and explain the two components of primary and secondary moments. Explain how we use design and the material properties of rebar and concrete to counter the two moment types.

In: Civil Engineering

Topics: Construction Accounting & Finances Capital Investments: 1.) Before you make a decision to acquire a...

Topics: Construction Accounting & Finances

Capital Investments:

1.) Before you make a decision to acquire a large piece of equipment what tools would you use to determine if this investment is really worth the cost and how would you finance this large investment? (Please give a one paragraph brief detailed example.)

Budgets:

2.) Discuss the importance of budgeting. Then give an example of how you would control your budget as a construction manager. (Please give a one paragraph brief detailed example.)

In: Civil Engineering