An Engineer wants to find how long it will take for clay under their project to consolidate 1 inch. The total expected primary consolidation is 2.22 inches. Using the Table below, what is the value of the Time Factor they will need to calculate the time rate of consolidation they are looking for? (Hint: What percent consolidation are they looking for?) 0.170 0.196 0.126 0.150

An Engineer wants to find how long it will take for clay under their project to consolidate 1 inch. The total expected primary consolidation is 2.22 inches. Using the Table below, what is the value of the Time Factor they will need to calculate the time rate of consolidation they are looking for? (Hint: What percent consolidation are they looking for?) 0.170 0.196 0.126 0.150

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Improvement And Ground Modification

Section: Chapter Questions

Problem 5.13P

See similar textbooks

Similar questions

A 6ft clay layer reaches 100% consolidation in 10 years and has a natural water content of 75%, what is the secondary compression settlement in the soil if the building life is expected to be 42 years. Report your answer to three decimal places and in inches. Coefficient of Secondary Compression, Ca 0.04 0.03 0.02 0.01 0 50 Type your answer... DIRTY 100 Average C for Completely Remolded Samples Falls in This Zone 150 200 Natural Water Content, % FIGURE 7-21 Coefficient of secondary compression; C = ratio of decrease in sample height to initial sample height for one cycle of time on a logarithmic scale following completion of primary consolidation. Source: U.S. Department of the Navy (1971). Range Undisturbed Samples: Ca in Range of Virgin Compression Ca in Range of Recompression Lies Below This Upper Limit 250 300 350 400
11 The following are the results of a consolidation test on a sample of a clayey soil. 11.3 Pressure, o (kN/m') 1.116 25 1.108 1.055 50 100 200 0.962 0.845 400 800 1600 0.755 11 0.65 80 0.658 0.675 400 0.685 200 a. Plot the e-log o' curve h. Using Casagrande's method, determine the preconsolidation pressure. c. Calculate the compression index, C, and the ratio of CJC_
A simple platform having a stair will be constructed, as an estimator, your boss gave you an assignment to estimate the concrete works needed for the stairs only. The width of the stair is exactly 1 meter. Using Class "A" mixture, how many cu.m. of sand is needed for the project? Note: The values are not rounded to the nearest 50ths; use the exact value instead. 0.825 cu.m. 0.875 cu.m. 1.075 cu.m. 0.975 cu.m.
A simple platform having a stair will be constructed, as an estimator, your boss gave you an assignment to estimate the concrete works needed for the stairs only. The width of the stair is exactly 1 meter. ... 1980 4090 1572 408 720 1636 Using Class "A" mixture, how many cu.m. of sand is needed for the project? Note: The values are not rounded to the nearest 50ths; use the exact value instead. A) 0.825 cu.m. B) 0.875 cu.m. cu.m. D) 0.975 cu.m.
Will a grit particle with a radius of 0.10 mm and a specific gravity of 2.65 be collected in a horizontal grit chamber that is 13.5 m in length if the average grit-chamber flow is 0.15 m³/s, the width of the chamber is 0.56 m, and the horizontal velocity is 0.25 m/s? Hint: Use the data below V's = g S-1] 18 DE 12UP , v=0.959 x 106 m²/s
v Question Completion Status: QUESTION 26 You do not have to fill the "measure" with water to calibrate it versus the nominal dimensions, O True O False QUESTION 27 In lab 2, you will compact the coarse aggregate with a tamping rod in 4 layers, compacting each layer 30 times. O True O False QUESTION 28 In lab 2, you will weigh the "measure" with compacted gravel, loose gravel, and saturated gravel. O True False QUESTION 29 Weight / Volume = Unit Weight O True O False
Suppose that you are a Project Engineer on a Dam project. The volume of soil required at the dame site is Vd=100,000m3. The final void ratio (ed) is 0.80. Your boss, the Project Manager delegates to you the important decision of buying the earth fill from one of three suppliers. • Supplier X sells fill at OMR. 0.200/m3 with e = 0.90• Supplier Y sells fill at OMR. 0.120/m3 with e = 2.00• Supplier Z sells fill at OMR. 0.150/m3 with e = 1.60Evaluate and select the best supplier based on your knowledge about soil compaction.
Q# 2. The following are the results of a consolidation test on a sample of a clayey soil Pressure, o' (kN/m²) 1.116 25 1.108 50 1.055 100 0.962 200 0.845 400 0.755 800 0.65 1600 0.658 800 0.675 400 0.685 200 a Plot the e, log o' curve. b. Using Casagrande's method, determine the pretonsolidation pressure. Calculate the compression index, C, and the ratio of C/C. C. (Note: Use excel for calculation and drawing. Discuss the details in your own words.)
Consolidation test results are provided below, (Hint: C, or C = Ae / log(of/ai') ): 1.2 1.1 1- 0.9 Void ratio 0.8 0.7 0.6 0.5 0.4 1 10 100 1000 Vertical stress (kPa) (log scale) In some of the results an interval is provided. It ccan be possible to get a result between the given values Use the plot and find pre-consolidation pressure (past maximum vertical effective stress) pe' according to Casagrande's method. pe'= .kPa Seç. Find C, Seç. Find C.: Seç. If the tested soil sample is taken at a depth of 5m (ysat=18kN/m) where the groundwater table is located at the surface what is the Over Consolidation Ratio(OCR) (OCR= pclo vo) Seç. Initial height of the specimen is 22mm. What is the final height of the specimen when effective vertical stress is 650kPa? Hint: Use void ratio. Seç. (Result is in mm) What is the consolidation settlement of 2m thick clay layer if initial effective stress is 20kPa and final effective stress is 400kPa. Hint: Poc= Seç. [Ho/(1+einit)]x[C,log(p'/o'init) +…
Refer to Figure 11.46. If the consolidation properties of the clay are rep- resented by the test results given in Problem 11.4, determine the primary 11.9 P Clay Df Yd H1 GWT B × L Ysat Clay Ysat Sandy gravel Figure 11.46 Copyright 2018 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203 Problems consolidation settlement of the clay layer. Given: P = 675 kN, B = L = 3 m, D, = 2 m, H, = 4 m, and H, = 6 m. The soil properties are Sand: Ya 15 kN/m³; Ysat = 18 kN/m³ Clay: Ysat 18.9 kN/m³; e, = 1.18 P at the middle of the clay layer.) BL (Use Δσ' =
a) What is the Yield Point? b) What does it characterize? c) What is the difference between Gel Strength and Yield Point of a drilling mud?
1. Fineness modulus of the aggregate Weight Retained Individual Cumulative Percent Sieve (g) Percent Percent Passing 4.75mm 31.5 2.36mm 67.6 1.18mm 96.5 600um 111.1 300um 60.5 150um 115.6 75um 17.5 pan 31.5 O a. 2.96 O b. 2.76 O c. 2.54 O d. 2.34