Bundle: Principles Of Foundation Engineering, 9th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
9th Edition
ISBN: 9781337947060
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 3, Problem 3.11P
To determine
Find the average relative density of sand.
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Question 40
The results of a constant head permeability test for a fine sand are as follows:
Diameter of the sample = 25 cm
Length of sample = 80 cm
Constant head difference = 77 cm
Time of collection = 388 secs
Weight of water collected = 340 grams
Find the seepage velocity in cm/min. if the void ratio is 0.49. Round off to four decimal places.
21
The results of a constant head permeability test for a fine sand are as follows:
Diameter of the sample = 37 cm
Length of sample = 92 cm
Constant head difference = 78 cm
Time of collection = 337 secs
Weight of water collected = 375 grams
Find the seepage velocity in cm/min. if the void ratio is 0.6. Round off to four decimal places.
Refer to Problem 3.4. Using Eq. (3.22), determine the average relative density of sand.
Chapter 3 Solutions
Bundle: Principles Of Foundation Engineering, 9th + Mindtap Engineering, 1 Term (6 Months) Printed Access Card
Ch. 3 - Prob. 3.1PCh. 3 - Prob. 3.2PCh. 3 - Prob. 3.3PCh. 3 - Refer to Figure P3.3. Use Eqs. (3.10) and (3.11)...Ch. 3 - Prob. 3.5PCh. 3 - Prob. 3.6PCh. 3 - Prob. 3.7PCh. 3 - Prob. 3.8PCh. 3 - Prob. 3.9PCh. 3 - Prob. 3.10P
Ch. 3 - Prob. 3.11PCh. 3 - Prob. 3.12PCh. 3 - Prob. 3.13PCh. 3 - Prob. 3.14PCh. 3 - Prob. 3.15PCh. 3 - Prob. 3.16PCh. 3 - Prob. 3.17PCh. 3 - Prob. 3.18PCh. 3 - Prob. 3.19PCh. 3 - Prob. 3.20PCh. 3 - Prob. 3.21PCh. 3 - Prob. 3.22PCh. 3 - Prob. 3.23PCh. 3 - Prob. 3.24PCh. 3 - Prob. 3.25PCh. 3 - Prob. 3.26PCh. 3 - Prob. 3.27PCh. 3 - Prob. 3.28PCh. 3 - Prob. 3.29PCh. 3 - Prob. 3.30PCh. 3 - Prob. 3.31P
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- PROBLEM 2: During a constant-head permeability test on a sand sample, 260 x 10° mm³ of water were collected in 2 minutes. If the sample had a length of 100 mm, a diameter of 40 mm and a maintained head of 200mm. What is its coefficient of permeability? a. 0.769 mm/s b. 0.967 mm/s c. 1.321 mm/s d. 0.862 mm/sarrow_forwardRefer to Problem 3.4. Using Eq. (3.28), determine the average relative density of the sand. Assume it is a fine sand. Use Eq. (3.13) to obtain (N1)60.arrow_forwardRefer to Problem 3.5. Using Eq. (3.28), determine the averagerelative density of the sand. Assume it is a fine sand.Use Eq. (3.13) to obtain (N1)60.arrow_forward
- Q3): (A): The result of constant head permeability test for sand sample having a diameter of 100 mm and a length of 200 mm are as follows: Constant head difference= 300 mm, time of collection of water= 3 min, volume of water collected 250 cc. Find the coefficient of permeability for the soil.arrow_forwardQuestion 16 The results of a constant head permeability test for a fine sand are as follows Diameter of the sample = 33 cm Length of sample 55 cm Constant head difference =74 cm Time of collection 580 secs Weight of water collected = 382 grams Find the seepage velocity in cm/min. if the void ratio is 0 38. Round off to four decimal places. SUS WE Rarrow_forwardA wet sand sample has a volume of 4.64 x 10-4 m3 and weighs 8N. After oven-drying, the weight reduces to 7.5N. Don't assume the value of Gs.Calculate the following: a. Void ratio b. Degree of saturation.arrow_forward
- Refer to Problem 3.5. Using Eq. (3.22), determine the averagerelative density of the sand.arrow_forwardPROBLEM No. 4 A sample of dry sand having a unit weight of 17.50 kN/m³ and a specific gravity of 2.69 is placed in the rain. During the rain, the volume of the sample remains constant but the degree of saturation increases to 45%. Determine the following: The void ratio of the sample in percent. b. The unit weight of the sample after being in the rain. The water content of the sample after being in the rain. a. С.arrow_forward3. Following are the results of a standard penetration test in fine dry sand. N60 Depth (m) 1.5 7 13 3.0 18 4.5 22 6.0 7.5 24 For, the sand deposit, assume the mean grain size, D50, to be 0.26 mm and the unit weight of sand to be 15.5kN/m3. Estimate the variation of relative density with depth using the correlation developed by Cubrinovski and Ishihara. Assume pas100kN/m2. denined frictionarrow_forward
- Q1/ specimen of the fine-grained soil, 75 mm in diameter and 20 mm thick was tested in an oedometer in a laboratory. At applying pressure (240 kN/m²), the time with dial gauge readings are: Time (min) 0 Settlement (mm) 0 0.25 1 0.22 0.42 Vertical pressure (kPa) 15 Settlement (mm) 0.1 Void ratio 1.88 4 0.6 30 0.11 1.87 9 0.71 16 0.79 And the void ratio and settlement for each load increment is shown in the table below. 60 0.21 1.85 120 1.13 1.72 100 1.04 36 64 0.91 0.86 240 2.17 1.57 480 3.15 1.43 1- Find Coefficient of consolidation in cm²/s using root time and TV90% = 0.848. 2- Find Preconsolidation pressure (oc) and compression index (Cc). Scanned by TapScannerarrow_forward9. A falling head permeability test was performed on a sand sample and the following data were recorded: = Cross-sectional area of permeameter = 100 cm2; length of the soil sample 15 cm; area of the stand pipe 8 min, = 1 cm2, time taken for the head to fall from 150 cm to 50 cm = temperature of water = 25°C; dry mass of the soil specimen 2.2 kg and its Gg = 2.68. Compute the coefficient of permeability of the soil for a void ratio of 0.70 and standard temperature of 20°C. (2 x 10 cm/s) =arrow_forward13 For a constant laboratory permeability test on a fine sand, the following data are given: Length of specimen: 19 cm. Diameter of specimen: 99 mm. Constant head difference: 51 cm. Volume of water collected in 4.86 min.: 427 cc Void ratio of the soil specimen: 0.51 Determine the seepage velocity in m/min. Round off to four decimal places.arrow_forward
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