The results from a compaction test are as follows: 130.0 128.0 126.0 124.0 122.0 120.0 118.0 116.0 114.0 112.0 4 8 10 12 14 16 18 20 Moisture Content (w%) a) What is the maximum dry unit weight and optimum moisture content? Use your best approximation. b) Ben wants to put in an awesome hot tub in his sloped backyard. To do so, it requires construction of an embankment with 1000 ft 3 of soil compacted to specifications of 95% relative compaction. The soil at the excavation site has a dry unit weight of 114 pcf with a moisture content of 6%. How much soil must be excavated to allow Ben to enjoy his hot tub? c) How much weight of water must be added to the excavated soil to facilitate compaction to the specifications of 95% relative compaction at dry of optimum. Dry Unit Weight (pcf)

The results from a compaction test are as follows: 130.0 128.0 126.0 124.0 122.0 120.0 118.0 116.0 114.0 112.0 4 8 10 12 14 16 18 20 Moisture Content (w%) a) What is the maximum dry unit weight and optimum moisture content? Use your best approximation. b) Ben wants to put in an awesome hot tub in his sloped backyard. To do so, it requires construction of an embankment with 1000 ft 3 of soil compacted to specifications of 95% relative compaction. The soil at the excavation site has a dry unit weight of 114 pcf with a moisture content of 6%. How much soil must be excavated to allow Ben to enjoy his hot tub? c) How much weight of water must be added to the excavated soil to facilitate compaction to the specifications of 95% relative compaction at dry of optimum. Dry Unit Weight (pcf)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Show calculation on how to determine the average coefficient of permeability of the sand samplea at20°C.
the following data have been obtained in a standard laboratory proctor compaction test : Trial No. moisture content. % 1 9 2 3 4 6 11.9 14.6 15-8 19.0 21.6 weight of container and compacted soil 137.43 38.16 38-67 38-8439-06 38.76 (N) The container is 943 cm³ ih volume and its weight is 201 A-Determine the optimum moisture content and the maximum dry unit weight B-what is the dry uhit weight and water content at 95% standard compaction in the field ?
A 8ft clay layer reaches 100% consolidation in 13 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 45 years. Report your answer to three decimal places and in inches. Coefficient of Secondary Compression, Ca 0.04 0.03 0.02 0.01 Type your answer... wy 50 Average Ca for Completely Remolded Samples Falls in This Zone 100 150 200 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 Cain Range of Recompression Lies Below This Upper Limit 250 300 350 400
no Sieve analysis test on 400 gm of sand was conducted with the following records; Sieve No. 8 14 28 35 70 100 200 pan 2.362 1.168 0.589 0.417 0.295 0.147 0.074 M Diameter (mm) Mass retained (gm) 60 100 72 48 62 18 30 A 60 160 B 280 342 360 390 Total Retained (gm) % finer 85 60 42 30 D 10 2.5 a. What of the values of A, B, C and D. b. Determine the grading characteristics of this soil. c. Classify this soil according to its gradation using USCS method. C
type, d) QA. (5 Marks) Sieve analysis test on 400 gm of sand was conducted with the fo lowing records; Sieve No. 8 14 28 35 70 100 200 pan 2.362 1.168 0.589 0.417 0.295 0.147 0.074 Diameter (mm) Mass retained (gm) 60 100 72 48 62 18 30 A 60 160 B 280 342 360 390 C Total Retained (gm) % finer 85 60 42 30 D 10 2.5 a. What of the values of A, B, C and D. b. Determine the grading characteristics of this soil. c. Classify this soil according to its gradation using USCS method
>) The following are the results of a compaction test; Mass of mold + wet soil(g) 2925 3095 3150 3125 3070 Water content% 10 12 14.3 16.1 18.2 If the volume of mold = 1000 ml, and mass of mold = 1000 g, and Specific gravit of solids = 2.70. G4 63.70 Wc a. Find the compaction curve showing the optimum moisture content and maximu dry density. b. Plot the zero air void line. c. Determine the degree of saturation at the maximum dry density. Sr P Pascal
Write on the following Test. CBR Test. Compaction Test. Atterberg Test.
Task 1. Compaction test Table 1 Results of compaction test Run No Mass of sample and cylinder (g) Mass of cylinder (g) 1 2 3 4 6022 6052 6102 6074 6015 4200 4200 4200 4200 4200 Can No 12 08 F3 F4 F5 Tare mass (g) Wet mass gross (g) Dry mass gross (g) 31.12 31.04 31.31 30.83 31.53 80.17 97.9 93.68 84.28 108.81 79.07 95.71 89.93 79.91 101.29 Table 1 shows the results of compaction test on soil sample. (1) Describe the test procedure of compaction test. (2) Calculate water content and dry density in each run. (3) Plot the dry density-water content curve and zero air void line. (4) Determine the maximum dry density and optimum water content.
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
Following are the results of a compaction test: Mass of mould 2925 3095 3150 3125 3070 + Wet soil (g) Water 10.0 12.0 14.3 16.1 18.2 content % Volume of the mould = 1000 ml Mass of the mould= 1000 g Specific gravity of solids = 2.7o ) Plot the compaction curve showing the %3D as optimum moisture content and maximum dry density. (ii) Plot the zero air voids line. (iii) Determine the degree of saturation at the maximum dry density.
Calculate % Sand using the following values; a. Weight of soil= 50 gb. HR reading at 40 sec.= 25c. Temp at 40 sec= 25 oCd. HR at 2 hrs= 16e. Temp at 2 hrs= 26 oC
Refer to the laboratory compaction plot in problem 3. On the same OMC chart, plot and assess each of the field data given in the table below considering that: a. yd must be at least 0.95 ya (max) b. Moisture content, w, should be within 2% of wopt MOISTURE DRY UNIT LOCATION CONTENT % WEIGHT kN/m3 A 10 14 12 18 14 16 D 16 14