Questions
How can ground improvement methods be classified in terms of their functions?

How can ground improvement methods be classified in terms of their functions?

In: Civil Engineering

A pin-ended chord of a truss is treated as a member in a braced frame. Its...

A pin-ended chord of a truss is treated as a member in a braced frame. Its length is 12 ft. It must carry a tension dead load of 95 kips and live load of 180 kips along with a uniformly distributed transverse dead load of 1.2 kips/ft and live load of 2.3 kips/ft. Will a W8x67, A992 member be adequate if the transverse load is applied to put the bending about the strong axis? Determine by (a) LRFD and (b) ASD. [8.14- 12-Tension]

In: Civil Engineering

How the Green Certification of buildings could aid in creating projects that are environmentally responsible and...

How the Green Certification of buildings could aid in creating projects that are environmentally responsible and resource efficient?

In: Civil Engineering

Using the flow rate of 250 gpm, select a plastic pipe diameter (2”, 4”, 6”, 8”,...

  1. Using the flow rate of 250 gpm, select a plastic pipe diameter (2”, 4”, 6”, 8”, 10”…) & determine the approximate pump head based on the following:
    1. Minor pipe losses include 6-90 degree bends (standard) and one plug valve straightway. Document your source for your K-values.
    2. Document which calculation method you used to calculate the total pump head.
    3. To save energy, choose the largest pipe diameter that provides the recommended 2.0 fps velocity of flow.
    4. Assume nominal pipe diameters as the inside pipe diameter.
    5. The connection is 10,500 feet from the pump station.
    6. The connection point located at an elevation of 768.6 feet above MSL. The low water elevation in the station (at which point the pump will turn off) is 755.0 feet above MSL.

Recommended Pipe Diameter = __________________ inch

Total Pump Head = _______________________ ft

In: Civil Engineering

what is creep ? Discuss the theories propounded to explain probable causes of creep.

what is creep ? Discuss the theories propounded to explain probable causes of creep.

In: Civil Engineering

Vehicles arrive at a signalized intersection at a uniform rate of 900 veh/hr. The saturation flow...

Vehicles arrive at a signalized intersection at a uniform rate of 900 veh/hr. The saturation flow rate for the intersection is 1200 veh/hr. However, a crash has reduced the saturation flow rate to only 300 veh/hr for a one-hour period. Assuming D/D/1 queuing, determine:

a. How long will it take for the resulting queue to clear? (6 points)

b. How much delay is experienced as compared to if the saturation flow rate had NOT been reduced? (6 points)

c. What is the average delay per vehicle during the period over which queuing occurs? (4 points)

d. What is the average queue length during the period over which queuing occurs? (4 points)

In: Civil Engineering

"How could a solid understanding of Project Management Plans contribute to the potential employability of an...

"How could a solid understanding of Project Management Plans contribute to the potential employability of an engineer? (Why is it important to know about this?). In your response, propose methods for how this engineer could demonstrate their knowledge to a potential employer (Beyond showing them a copy of a Project Management Plan)."

Please answer this in 200 words

In: Civil Engineering

Based upon the following tasks, durations and predecessor relationships which of the following tasks is not...

Based upon the following tasks, durations and predecessor relationships which of the following tasks is not critical? 1, 10, N/A; 2,8,1; 3,5, 1; 4, 9, 1; 5, 6, 3; 6, 6, 2; 7, 11, 5; 8, 10, 6; 9, 9, 4; 10, 7, 9; 11, 10,( 7,8,10);

a. 4

b. 9

c. 6

d. 10

In: Civil Engineering

A field density test has been run on a soil containing 18% of its weight in...

A field density test has been run on a soil containing 18% of its weight in particles retained on the No. 4 sieve. The dry density of the total sample was 128.7 pcf and the water content was 7%. The water content of the gravel fraction was 3%. the specific gravity of the solids was 2.69. Compute the water content and dry density of the soil fraction of the fill that passes the No. 4 sieve.

In: Civil Engineering

1) Benefits realized on this project by utilizing a mass timber design scheme when compared to...

1) Benefits realized on this project by utilizing a mass timber design scheme when compared to the original steel design included:

a. Reduced floor to floor height

b. Longer floor panel/slab spans

c. Easier MEP coordination

d. All of the above

2) Glue-laminated timber was used for which components on the UMass Design Building: (choose all that apply)

a. Only beams

b. Beams and columns

c. Beams, columns and braced frames

d. Only braced frames

3) Cross-Laminated Timber (CLT) can only be used for horizontal surfaces (floors and roofs), not for walls:

a. True

b. False

4) CLT-concrete composite floor systems utilize each material in its most efficient manner to provide: (choose all that apply)

a. Stiffer floor panels capable of longer spans

b. Lower panel mass

c. Quicker installation

d. Easier building code approval

5) The inherent mass and charring characteristics of mass timber sections allow them to be exposed while achieving fire-resistance without the need for coatings or protection layers such as gypsum:

a. True

b. False

6) The timber zipper roof trusses over the lower level lobby provide which building feature:

a. Steep slope roofs for adequate snow shedding

b. An accessible green roof above the open lobby

c. Crane rails utilized in the wood testing labs

d. Seismic load resistance as shear walls

7) The beam to column connections on the UMass Design Building utilized: (choose all that apply)

a. Large exposed steel gusset plate connections with through bolts

b. Traditional timber frame joinery

c. Steel hangers concealed by the timber for fire-resistance purposes

d. Lag screws and knife plates

In: Civil Engineering

In an industrial project, a designer wants to use W16x57, Fy = 50 ksi, of various...

In an industrial project, a designer wants to use W16x57, Fy = 50 ksi, of various heights, as columns.

All columns will have fixed ends at the top and bottom (K=0.5).

Note that tables for W16 are not available in the Steel Manual, as it is a special use.

Use formulas, for Euler’s buckling stress; and for short and long columns, given in the PowerPoint.

Use radius of gyration, ry, of 1.60 inches.

Calculate the design strength, FC PN, (Kips) of this shape for the 15’, 30’, and 45’ column heights used in that project.

In: Civil Engineering

What are three items of concern for stormwater pollution related to general operations on a construction...

What are three items of concern for stormwater pollution related to general operations on a construction site?

In: Civil Engineering

When protecting palletized storage of expanded exposed Group A plastic in a stable array stored up...

When protecting palletized storage of expanded exposed Group A plastic in a stable array stored up to 25 ft high in a 30 ft building, what is the correct column to use in Table 21.3.3(a) (NFPA 13-2019)? And what is an acceptable density (measured in gpm per sq. ft) for the storage?

A.

A

B.

B

C.

C

D.

D

E.

E

In: Civil Engineering

Would you like to recommend cohesive soils as the backfills behind a retaining structure? Justify your...

Would you like to recommend cohesive soils as the backfills behind a retaining structure? Justify your answer.

In: Civil Engineering

A student borrowed P5,000 which she will pay in 30 equal monthly installments. After her twenty-fifth...

A student borrowed P5,000 which she will pay in 30 equal monthly installments. After her twenty-fifth payment she desires to pay the remainder of the loan in a single payment. At 15% interest compounded monthly, what is the amount of the payment? Draw cash flow diagram

In: Civil Engineering