Compaction Test

Q1. Explain with aid of drawings/ Pictures the standard procedure to perform soil compaction test.5Degrees

Q2.A soil having a specific gravity of solids G = 2.75, is subjected

to

Proctor compaction test in a mold of volume V = 945 cm³. The observations recorded are as follows:

• What are the values of maximum dry unit weight and the optimum moisture content? [10 DEGREES]
• Draw 100% saturation line.[2 DEGREES]

Q3.Differentiate:

1. Compaction and consolidation, and [2]
2. Standard Proctor and modified Proctor tests.[3]

Q4.Draw an ideal 'compaction curve' and discuss the effect of moisture on the dry unit weight of soil.[3]

10. The Civil Engineering’students at PUPR, provide the following data obtained in the Environmental Laboratory (L-103) for the influent of a wastewater treatment plant: SampleVolume (ml) Filter mass (gr) Crucible Mass (gr) Dry mass at 103oC (gr) Mass after 550oC (gr) TS 20 - 51.0915 51.0992 51.0972 SS 30.5 0.0726 54.1208 54.2021 54.1978 DS 18.6 - 91.7289 91.7297 91.7294 Calculate the concentration of TS, SS, DS, FTS, VTS, FSS, VSS, FDS, and VDS of this sample

Compute the wet area, wet perimeter, hydraulic radius and hydraulic depth for the trapezoidal channel section with the following data: water depth = 5.5 ft, bottom width = 25 ft and side slopes 1:2.

List five of the ten changes brought about the passage of propositions 8, victims' bill of rights as given in your text?

George Jones  is a 45 year-old who has two felony convictions, one for robbery and one for assault with a deadly weapon. In 2007, he stole some items worth about $100 from a Wall Mart. Jones has admitted stealing the merchandise. His conduct qualifies as petty theft under the state’s criminal code, which is a felony. There is, however, another provision in the code for misdemeanor theft.

If you were the prosecuting attorney in the case against Jones, would you file felony charges against him? Would your answer to the question change if you knew that charging a felony would result in a third strike under the criminal code, so that Jones would be subject to a sentence of 25-years-to-life?

If you were the judge in Jones’s case, would you grant the defendant’s motion to dismiss the felony charge and accept a proposed guilty plea for misdemeanor theft (which could result in a sentence of up to one year in the county jail)?

A 90o v-notch weir is used to measure discharge flow rate. A head (H) of 6 inches is measured behind the weir. Assume the following:

• Weir equation is Q = 2.5H2.5 (Q in cfs and H in feet)

• 1 cfs = 450 gpm

• a) Estimate discharge flow rate in gallons per minute (gpm)

• b) Briefly describe hydraulic principle of open channel flow measurement

Please show all work. Thank you so much in advance!

The road becomes a class-III two-lane highway after reaching a long bend in the road. The speeds don’t typically change off-peak at the transition, and width/clearance/access are consistent after the transition too. There are 50% no passing zones. What is the LOS of the two-lane highway?

A concrete mix design is needed for a residential street paving project in Detroit, Michigan. Pavement thickness is 8”, unreinforced, subjected to freezing and thawing and deicing agents are anticipated. The specified compressive strength is 4000 psi. Assume both Fine Aggregate (FA) and Coarse Aggregate (CA) are in saturated surface dry condition.

Specific Gravity of Fine Aggregate (FA) = 2.71

Fineness Modulus (FM) of Fine Aggregate (FA) = 2.70

Specific Gravity of Coarse Aggregate (CA) = 2.65

Bulk Density of Coarse Aggregate (CA) = 105 pcf

Nominal Maximum Size of Coarse Aggregate = ¾”

Specific Gravity of Cement = 3.15

Fill in ALL boxes in the tables below:

Given the following:

Bucket volume of loader: 3.6 L m³ (loose cubic meters)

Loader cycle: 0.42 min

Truck capacity: 11.5 L m³

Truck traveling time with load 2.28 min

Truck maneuvering for tipping and tipping time 0.65 min

Truck return time 1.18 min

Truck maneuvering for loading 0.40 min

Planned activities (lunch, breaks etc…) 0.64 min

Waiting time at loader (per cycle) 0.50 min

Conversation with supervisor (per cycle) 0.25 min

Other cycle time affecting machine performance 0.75 min

Swell factor 1.12

Bank Density 1,930 kg/m³ (in situ)

And the following equation:

P = (Q x T) / t

Where

P = Performance /hr (tonnes/hr)

Q = Loaded(shovel/loader) Capacity of truck (tonnes)

T = Productive time in minutes/hour

t = round trip cycle time (i.e. excluding unavoidable delays)

Calculate

1. Number of buckets required to fill the truck (use nearest integer)
2. The loading time of the truck. (Assuming 0.1 min to load the first bucket)
3. The total unavoidable delay time per cycle .(i.e. Planned activities + Waiting time at loader + Conversation with supervisor + Other cycle time affecting machine performance)
4. The round trip cycle time “t” ( See definition of “t” above)
5. The productive time per hour (.i.e. time minus delays)
6. The tonnage hauled per cycle
7. The performance per hour

9) GIVING THE FOLLOWING JOB CONDITIONS and REQUIREMENTS, INDICATE THE TYPE OF ADMIXTURE YOU WOULD USE, EXPLAIN THE REASON(s)

a) Pumping Concrete

b) Pre-Cast Elements

c) Hot Weather Concreting

d) Exterior Concrete

fsds

7) LIST AND EXPLAIN THE USE, ADVANTAGES and DISADVANTAGES OF:

a) Type "F" Fly-Ash

b) Slag Cement

c) Type "C" Fly-Ash

d) Silica Fume

5) WHAT ARE THE TYPICAL DOSAGES ( per 100 lbs of cement) FOR THE FOLLOWING ADMIXTURES?

a) Water Reducers b) Accelerators c) Air Entraining d) Super Plasticizers e) Retarders f) Corrosion Inhibitors g) Shrinkage Reducing Admixture

Can you provide a sample programming for 2D plane frame in MATLAB ?