Calculate the drawdown at the well use r which is the

Reference no: EM13564950

A gravel-packed well with an effective diameter of 36 in is to be constructed in an aquifer with T = 2.6 x l04 gpd/ft and S = 2.3 x 10-5. The design flow of the well is 1000 gpm. Calculate the drawdown at the well (use r which is the distance from the pumping well = 18 in) with total withdrawals from storage after (a) 1 min, (b) 1 h, (c) 1 day, (d) 1 month, and (e) 1 yr of continuous pumping, at design capacity. Repeat the calculations for r = 1m and 100m. (conversions: 1m3/d/m = 80.517 g/d/ft, 1 in = 25.4 mm, 1 gpm = 5.45 m3/d)

Reference no: EM13564950

Questions Cloud

Find the theoretical carbonaceous oxygen demand : Suppose a ponds water contains 10.0 mg/L of some algae, which can be represented by the chemical formula C6H15O6N. Using the following reactions:

What are the concentrations of ppm : A sample of air has been collected from above an air stripping tower to evaluate its performance and to determine if toxic air emission standards are being violated

Find the value of the kinetic energy correction coefficient : A symmetric compound channel in overbank flow has a main channel with a bottom width of 30 m, side slopes of 1:1, and a flow depth of 3m.

Determine the dry unit weight of compaction in the field : The results of a field unit weight determination test performed by means of the sand cone method are as follows:

Calculate the drawdown at the well use r which is the : A gravel-packed well with an effective diameter of 36 in is to be constructed in an aquifer with T = 2.6 x l04 gpd/ft and S = 2.3 x 10-5. The design flow of the well is 1000 gpm.

What is the average period of time between independent : A 10-cm diameter 2000 m long pipeline connects two reservoirs open to the atmosphere. What is the discharge in the pipeline if the water surface elevation difference of the reservoirs is 50 m? Assume a smooth pipe and ? = 1.2 x 10-6 m2/s. Neglect min..

The maximum-shear-stress theory of failure : A 120-ft diameter cylindrical tank with an empty weight of 1,000,000 Ib (including the weight of the cylindrical mat foundation) is to be built. The bottom of the mat will be at a depth of 2 ft below the ground surface. This tank is to be filled with..

Compute the crates velocity two seconds after p has been : A crate has a weight of 50 lb and is acted upon by a force having a variable magnitude of P=20t, where p is in pound and t is in seconds. compute the crates velocity two seconds after P has been applied. The crates initial velocity is 3 ft/s down the..

What is the loss of energy through the jump : In a rectangular channel of 12 m width, water flows at a rate of 150 cms. At the end of the channel, there is a horizontal concrete apron of 12 m width, on which the water depth is 3 m. Will a hydraulic jump formed in the channel and why? What is the..

User Account

All Pages