ProblemThe saturated soil specimen shown below has a permeability of 0.005 cm/sec, a porosity of 38%,and a cross-sectional area of 22 cm². Two standpipes are placed at points A and B as shown below.The specimen has reached a steady state condition after flushing it with water for 1 hr.Datumttttth₁ = 100 cm50 cmL = 50 cmB40 cmh₂ = 80 cmDetermine:1.2.Elevation head (in cm) at points A and B.Pore water pressure (in kPa) at points A and B.3. Discharge velocity (in cm/sec) through the sample.4.5.What is the quantity of flow through the sample in cm³/day?What is the magnitude of the seepage velocity (in cm/sec)?OUT

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Answered: Problem The saturated soil specimen…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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ATTENTION!!!! PROVIDE A DIFFERENT SOLUTION!!! DO NOT SEND THE SAME SOLUTION EACH TIME!!! YOUR SOLUTION IN PART B INCOMPLETE!!! IF YOU ARE, CAN YOU ELABORATE ON WHY IS H1 = 14.466cm AND H2 = 21.534CM???? A constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long. The head difference applied during the test is 20 cm and 7 cm3 is collected over a time of 100 sec. Provide step by step solution. a) Compute the permeability based on these test conditions and results. b) A falling head test is conducted on the same soil specimen at the same time (t1 – t2 = 100 sec), and the standpipe diameter is 0.8 cm. If the average head during the test should be 18 cm, what are h1 and h2 values, provide step by step solution solving h1 and h2 values.
Problem 3 Classify each of the trusses below as statically determinate, statically indeterminate, or unstable. If indeterminate, specify the degree of indeterminacy. Hint: consider using the method of sections with a vertical section next to the vertical force P to explore if the trusses are unstable. nhinhnh (b) P (a) P P (c)
Answer in three decimal places please
The results of a laboratory consolidation test on a clay specimen are the following. Pressure, ir (lb/ft²) 500 1.000 2.000 4.000 8,000 16.000 Total height of specimen at end of consolidation (in.) 0.6947 0.6850 0.6705 0.6520 0.6358 0.6252 Given the initial height of specimen = 0.748 in.. G specimen = 95.2 g. and area of specimen = 4.91 in.²: a. Plot the e-log or curve = 2.68. mass of dry b. Determine the preconsolidation pressure c. Calculate the compression index, C.
Show calculation on how to determine the average coefficient of permeability of the sand samplea at20°C.
A permeability test is carried out on a sample of and cross section is 1500mm^ 2 a soil whose k = 3 * 10^(-1) m / s. Briefly identify this while indicating its degree of permeability What diameter of measuring pipe do we use knowing that the load goes from 275 mm to 200 mm in 5 min? Compare the permeability of this soil identified in question a) with that of a sandy silt. Justify your answer Compare the frost hardness of the soil identified in question a) with that of gradual sand. Between these two soils, which will be the most suitable as road fill without risk of frost swelling? Justify your answer
A fine sand was tested in situ to give a coefficient of permeability of 3.7 x107 m/s. A sample of the same sand, 400mm high and 100 mm in diameter was then tested in a constant head permeameter. Water percolated through the soil under a head of 600mm for 5 minutes and the discharge water had a volume of 1300mm. Determine whether the in situ testing was reflected by the laboratory results and If the below water retaining structure is 140m in width, based on a coefficient of permeability of 7.8x10°m/s, determine the quantity of water that will flow through the soil and under the structure per day.
A modified Proctor compaction test was carried out using a cylindrical moldwith a 1000 ml volume. Table 2 summarizes the results.a. Plot the compaction and ZAV curves (RD=2.75 and ρwater=1000 kg/m3).b. Determine the maximum dry density and the optimum moisture content.
(a) What is the pore water pressure at point A (kPa), and what is the effective stress at point A (kPa) ? (b) True or False: The effective strength at point A will increase if the groundwater table rises to the ground surface.
Problem (3) The hydraulic conductivity of a sand specimen at a void ratio of 0.55 is 0.051cm/sec. Estimate its hydraulic conductivity at a void ratio of 0.7.
Ex Two identical soil samples (A) and (B) of a fully saturated N.C.C. were tested. Sample (A) was subjected to an unconfined compression test and failed when the deviator stress (OT-13) was (200) kN /n². Sample (B) was tested under UU conditions with a cell pressure of (300) kN/m². The pore water pressure at failure. was (200) kN/m². a) What was the pore water pressure at failure in sample (A). b) If C=o, Find (2) for this clay. (Itint. Start with soil B, and that (OJ) un= (FJ) afined). unconfined
Sr B. ( A Soil Specimen has the following characteristics: % passing No.4 sieve = 85 % passing No.200 sieve = 11 D60 = 2 mm D30=0.35 mm D₁0 = 70 μm D8=2 μm L.L = 36% P.L = 31% 1. Classify the specimen according to the Unified Soil Classification System (USCS). Assign the group name and the group symbol. 2. Determine the soil activity. 3. Determine the soil Liquidity index and consistency index if wc = 26%.

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