The material correction factor is 1.0. Assume slot dozing, and a 50 min/hr job efficiency. For weight, wet sand is pretty close to 2300 pounds per Cy. Excluding grade, what is my net correction factor for the other factors (excluding grade)?

Traffic counts and signal timing data were collected for the intersection of Sand Creek Road and Wolf Road. The intersection is signalized. The collected data show that, for a particular cycle, vehicles on the through lane of the SB of Sand Creek Road had the following arrival headway pattern (counted from the start of the red time of the cycle):

– 2.5 seconds for the first 10 seconds

– 2 seconds for the time period of 44 ‐ 50 seconds, and for the time period of 130 ‐ 166 seconds

– No vehicle was observed in‐between of the above time periods.

– Collected data also show that the cycle length is 200 seconds with 140 seconds for the effective red time and 60 seconds for the effective green time. Assume the discharge headway after the signal turns green is 2 seconds. Ignore the interactions of vehicles from left‐ and right‐turn lanes when you conduct the analysis.

Find:

– Maximum queue size

– Maximum delay

– Total queuing delay

– Average queuing delay

How should Quality Assurance and Quality Control be executed on a stadium construction project?

Please describe the relationship between the various structural and functional properties for various materials (metal, ceramics and polymer).

Hint: Seek the linkage from atomic structure and bonding, to microstructures and defects, as well as processing relevance in difference property categories

A groundwater supply has the following analysis: Ca2+ = 94 mg/l HCO3- = 317 mg/l Mg2+ = 24 mg/l SO42- = 67 mg/l Na+ = 14 mg/l C1- = 24 mg/l Calculate the quantities of lime and soda ash for excess-lime softening, and the carbon dioxide reacted for neutralization by two-stage recarbonation. Assume that the practical limits of hardness removal for calcium are 30 mg/1 as CaCO3 and for magnesium are 10 mg/1 as CaCO3 and that three-quarters of the final alkalinity is converted to bicarbonate. Calculate the finished hardness and sketch the bar graphs for the raw and finished waters.

COAGULATION – Treatment of a water supply required 60 mg/l of alum as a coagulant. The natural alkalinity of the water is 20 mg/l. Based on theoretical chemical reactions, what dosage of lime as CaO is required to react with the alum after the natural alkalinity is exhausted?

Negotiations are an important part of the construction project, from start to finish. Negotiations need to made in good faith, with all parties expecting compromises. When negotiations fail, mediation and arbitration can settle project disputes.

Why aeration is important for activated sludge process? What would be the effect on the DO profile with time (provide a sketch) and BOD removal and sludge production if:

Pumping more air than the required amount

a) Why is consolidation settlement inherently a nonlinear process? b) Name two ways we can increase the rate of consolidation, and explain why they work. c) You are running a consolidation test and your lab group member accidentally clogged the drainage on one side of the sample you are testing. How will this affect the measured settlement? d) Why do some soils expand when sheared, while others contract when sheared?

Traffic on a three-lane freeway observes a triangular flow-density relationship with free-flow speed vf=100km/h, capacity c=2000veh/h/lane, jam density kj=150veh/km/lane. Flow in the freeway from upstream is 5000veh/h, while the ramp flow is negligible (almost zero).At 9:45am, an accident occurs at point A. The vehicles involved close one lane of traffic (total capacity reduces to 4000veh/h) for 15min and afterwards the scene is clear (capacity returns to 6000veh/h). Lucy enters the freeway via the ramp at point B at 10:00am. Distance AB is equal to 6.5km.What time [h] does Lucy leave the queue?What time [h] does Lucy pass the accident scene (point A)?

A 4m thick clayey layer was initially water saturated with water content w = 34%, and in situ effective stress σzo’ = 31 kPa. Clearly state your assumptions to determine: a) The total settlement in this clay layer, if the final void ratio after consolidation is ef = 0.75. b) If OCR = 2.2, the construction of an embankment at this site induces 48.5 kPa additional load, what will be the total settlement at this site? Assuming Cc = 0.3 and Cr = 0.06. (c) What will be the settlement after 10 years of consolidation, assuming Cv = 3.2 × 10-7 cm2 /sec and double drainage condition.

Write at least four (4) paragraphs about Dilatometer test as a geotechnical engineer.

What is the Penman Combination equation and what does each term mean in the equation. What unit should each term be in?

A trapezoidal channel has size slopes of 3:1 (H:V), a bottom width of 22 feet, a longitudinal slope of 0.0003, a Manning’s roughness coefficient of 0.023, and carries a flow rate of 340 cfs.

a) Calculate the normal depth in this channel.
b) Calculate the normal specific energy.
c) Calculate the Froude number. State the classification of flow.
d) State how the critical depth will compare to the normal depth and why.