A road embankment will be constructed using clayey sand from a local borrow excavation. The embankment has a volume of 100,000 cubic meters. Specifications require the soil to be compacted to at least 95 percent of the maximum dry density obtained in a Standard Proctor test (i.e., relative compaction, RC greater than or = 95%). It is estimated that the as-constructed embankment will be at an average RC of 97% since the contractor must meet or exceed this specification. Standard Proctor tests on this soil produce a maximum dry density of 17.9 kN/m3 at an optimum water content of 16 percent. The soil in its natural condition (prior to excavation) has a water content of 6 percent, degree of saturation of 20 percent,and specific gravity of solids (Gs) of 2.70. Estimate the following:

(a)Volume of soil to be excavated from the borrow area.

(b)Number of truck trips at 25 tonne/load required to move the soil, assuming it remains at its natural water content during transport (1 metric tonne=1000 kg).

(c)Volume of water required to raise the water content of the soil to its optimum value for compaction (neglect the effects of evaporation for this calculation)

1. The results of a water analysis are as follows: Ca2+ = 70 mg/L Mg2+ = 9.7 mg/L Na+ = 6.9 mg/L K + = 0.1 mg/L Cl- = 10.6 mg/L SO4 2- = 96.0 mg/L HCO3 - = 140.3 mg/L 1) Is this an acceptable analysis? Why or why not? 2) Draw a millequivalent bar graph showing meq/L for a cation and anion balance. 3) What dose of lime and soda ash would be required to treat this water to an acceptable hardness levels?

Provide examples of the following Structural conditions.

1. Give an example of stress.
2. Give an example of strain.
3. Give an example of shear.
4. Give an example of an item that has moved beyond the elastic range and become plastic.

Define and differentiate between companies’ goals and objectives. List at least three factors that support the long-term attributes of “Goals".

part 1)

if a footer is on a sandy soil with no cohesion the factors to neglect for estimating bearing capacity per unit area of foundation include (choose all that apply):

Group of answer choices

Nc

Nq

Depth of the foundation

Dimensions of the Excavation

part 2)

Drilled piles resisting uplift loads need steel reinforcement:

Group of answer choices

True

False

Question 1 a) Explain using the concept of depth changes and specific energy why Bernoulli's equation cannot be used to derive the Hydraulic Jump formula. (10) b) Derive the Hydraulic Jurnp formula starting with the conservation of momentum that states Net Pressure Force is equal to Change in Mornentum using discharge per unit width i.e. /,9Y1 = P9(it — V2) where location 1 is upstream of the jurnp and location 2 is downstream. (15)

Rectangular Combined Footing design

How each of the pillars of sustainability(Social sustainability,Economic sustainability,Environmental sustainability) could be realized in (Construction & Demolition Waste Management) practice?

. List five possible methods for deep ground improvement.

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

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]

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

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

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