The results of a standard Proctor test are given in the following table.
a) Determine the maximum dry unit weight of compaction and the optimum moisture content. Given: Mold volume = 1/30 ft3.
b) Determine the void ratio and the degree of saturation at the optimum moisture content. Given: Gs = 2.69.

As SR361 enters Middletown from the NW, it must curve to the south between two historic buildings. At this point, SR361 consists of two 11-foot lane. The building to the right of traffic, is only 10 feet from the edge of the 5-foot wide shoulder. Local policy is that the superelevation rates not exceed 0.06 inches per inch. Will the minimum SSD be available from vehicles moving at 60 mph through this curve?

A long segment of the suburban freeway is to be designed on level terrain. The level segment, however, is followed by a 4.5% grade, 2.0 miles in length. If the DDHV is 2,500 veh/h with 15% trucks (standard mix), how many lanes will be needed on the (a) upgrade, (b) downgrade, (c) level terrain segment to provide for the level of service C? Lane widths and lateral clearances may be assumed to be 12 ft and 6 ft, respectively. Ramp density is expected to be 1.0 ramps/mi. The PHF is 0.92. Good weather, no incidents, no work zones, and regular users of the facility may be assumed.

Design rapid sand filters for a water treatment plant to treat a flow rate of 25 mgd. Use 1.5 for a peak factor. Consider the location of overflow troughs, freeboard, and pressure head of water. Assume that the length of the filters is 2 times the width and that the filtration rate is 3 gpm/ft2. Assume anthracite over sand with 1 ft gravel under media, top of water level during filtration is below troughs, and a 3 ft head drop between bottom of rapid sand filters (bottom of gravel) and top of water in chlorine contact basin.

a. Determine how many parallel filters should be used

b. Design the dimensions (width, length, depth) for one rapid sand filter in the process train and draw features (media, gravel, underdrain, overflow troughs, freeboard, pressure head, and water level in chlorine contact basin) and draw a simple diagram of the rapid sand filter.

c. Using a backwash rate of 12 gpm/ft2 for 15 minutes, what is the volume of water used in each backwash?

solve all with clear steps please

For a 10 x 10 Eastern White Pine, Select Structural (NELMA) timber column with an unsupported length of 14 ft, with both ends pinned;

assuming

Permanent duration

Wet condition

Normal temperature

Determine:

Compare the following 3 alternatives using the incremental benefit/cost ratio method. Determine which is the most efficient and which is the most profitable. i=5% per year compounded yearly.

3 survey crews completed differential level loops. The total distances and misclosures were: Crew 1 : Distance of loop = 896m; misclosure = 0.025m Crew 2 : Distance of loop = 543m; misclosure = 0.016m Crew 3 : Distance of loop = 761m; misclosure = 0.024m

alculate the maximum 3^rd order allowable accuracy for each crew; i) Crew 1 , ii) Crew 2 , ii) Crew 3 , iv) which crew did not acceptable 3rd order accuracy for their level loop?   

We have discussed several types of shoring. If we have a certain project, when should we do the shoring using sheet piles, Contiguous Piles, Secant Piles, Soldier Beams and Lagging, or Diaphram Walls? Compare between these different types and list the criteria at which we choose the appropriate shoring system for any project.We have discussed several types of shoring. If we have a certain project, when should we do the shoring using sheet piles, Contiguous Piles, Secant Piles, Soldier Beams and Lagging, or Diaphram Walls? Compare between these different types and list the criteria at which we choose the appropriate shoring system for any project.

why a typical concrete structure is designed to assure that all of its sections behave in stage 2 under working loads?

Draw the following network,

1. Draw the precedence Network for the following project
2. Find ES, EF, LS, LF, TF and FF for each activity.
3. Which activities in the project are on the critical path

Note: If the relationship type is not mentioned, it is FS. If no lag/lead is mentioned, it is zero.

You are analyzing a 40 FT long simply supported beam (b = 10 IN, d = 21.5 IN, h = 24 IN) in an existing building. The dead load on this beam is 1.2 KLF and you are tasked with deciding whether a load of 2 KLF of live load can be applied in addition. Based on the original plans, you think that the compressive strength of the concrete f’c = 3000 PSI and the yield strength of the rebar is 40 KSI. The existing stirrups are #3 bars (2 legs) at 9” centers along the entire beam.