Discuss field sampling approaches and the importance of assessing certain stream characteristics during sampling.

type please

4) WHAT ARE SOME OF THE BENEFITS OF USING ADMIXTURES TO: a) the concrete mixture b) The Ready Mixed Concrete Suppliers c) The Concrete Contractors

Table Q1(b) shows the data obtained from soil exploration report. The groundwater level
was found at a depth of 3m below the ground surface. Given the surcharge load lies on the
ground surface at 70 kPa.
Depth (m) Types of soil Specific gravity Porosity
0 to 5 Clayey sandy 2.69 0.40
5 to 10 Clayey silty 2.63 0.35
10 to 14 Silty sandy 2.70 0.30
14 to16 Silty clayey 2.72 0.37
I. Determine the total stress, pore water pressure and effective stress distribution for
the 4 layers of soils.
II. Draw the pressure distribution diagram of total stress, pore water pressure and
effective stress of soil.

Can you please suggest me a literature on "Conservation or harvesting of water in a hilly region where there is no access to ground water due to the altitude".

And a suggested list of technology to solve the above problems.

Thompson’s proposal for a building construction contract was for $125,500. After finding that his bid was low, he checked his estimates and found that an item of $25,000 had been incorrectly recorded as $2,500 in making the summary of costs. Can he remove his bid? Is the contract likely to be valid? Why or why not? Explain your answer. To receive full credit, you should use the legal terms discussed in class.

For federally funded public projects, Owners must select the most qualified design team based on certain criteria rather than based on price. What are the three criteria used to determine what engineering and architecture firm is the most qualified for a project? What is the act that required the use of these three criteria rather that price for the selection of engineering and architecture firms for public projects in the US?   

A soil sample weighing 122g has diameter and length equal to 4.5 inches
and 11 inches, respectively. The moisture content in soil came out to be 40 %. If specific gravity of soil
solids is 2.67. Find Bulk unit weight, dry mass of sample, voids ratio, porosity, dry unit weight and degree
of saturation of soil sample.

Lien laws have been enacted to provide protection for various people. Prior to filing a mechanic’s lien, what is the process and what must someone do in order to make a lien claim (i.e., in order to have the right to file a mechanic’s lien)? Mention one strategy that could be used by the owner to avoid a mechanic’s lien.    

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