You stumble and break your leg after falling into a deep pot hole. While waiting for your leg to heal, you decide to fill in the pot hole with some gravel so no one else gets hurt. You go to the garden store to buy gravel but no one has heard of the USCS system. That does not matter since they only have one type anyway. You buy a bag and run a sieve test on a 470g sample that produces the following data. Plot the grain size distribution curve, identify the coefficients of curvature and uniformity, and classify according to USCS. Explain why either a poorly graded gravel or a well graded gravel would be better for this application (hint: think about the voids). Sieve size (mm) 63 37.5 19 13.2 9.5 6.7 4.75 2.36 1.18 0.6 0.212 0.075 Mass retained (g) 10 26 28 18 20 49 50 137 46 31 34 30

You stumble and break your leg after falling into a deep pot hole. While waiting for your leg to heal, you decide to fill in the pot hole with some gravel so no one else gets hurt. You go to the garden store to buy gravel but no one has heard of the USCS system. That does not matter since they only have one type anyway. You buy a bag and run a sieve test on a 470g sample that produces the following data. Plot the grain size distribution curve, identify the coefficients of curvature and uniformity, and classify according to USCS. Explain why either a poorly graded gravel or a well graded gravel would be better for this application (hint: think about the voids). Sieve size (mm) 63 37.5 19 13.2 9.5 6.7 4.75 2.36 1.18 0.6 0.212 0.075 Mass retained (g) 10 26 28 18 20 49 50 137 46 31 34 30

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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Question

1. You stumble and break your leg after falling into a deep pot hole. While waiting for your leg to
heal, you decide to fill in the pot hole with some gravel so no one else gets hurt. You go to the
garden store to buy gravel but no one has heard of the USCS system. That does not matter since
they only have one type anyway. You buy a bag and run a sieve test on a 470g sample that
produces the following data. Plot the grain size distribution curve, identify the coefficients of
curvature and uniformity, and classify according to USCS. Explain why either a poorly graded
gravel or a well graded gravel would be better for this application (hint: think about the voids).
Sieve size (mm) Mass retained (g)
63
0
26
37.5
19
28
13.2
18
9.5
6.7
4.75
2.36
1.18
0.6
0.212
0.075
20
49
50
137
46
31
34
30

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Please help I'm in hurry.
In order to check the quality of the stockpile of aggregates, 1 sack of aggregates (around 40 kg) was taken from the stockpile and then returned to the laboratory. From a visual inspection of the stockpile, it consists mostly of sand particles mixed with a few gravel aggregates of not more than 1” in size (diameter). After the laboratory test, it was reflected in the report that the stockpile is dominated by gravels. This report contradicts the initial visual inspection that was conducted on the field. Do you think there were discrepancies along the way? If so, where do you think such discrepancy occurred? How do you resolve this contradicting events?
IL Test sample weight= احتمان Sieve size Weight retained (g) Calculations: Sieve size in. (mm) 3/8" 9.5 mm No.4 4.75 mm No.8 2.36 mm No.16 1.18 mm No.30 0.6 mm No.50 0.3 mm No.100 0.15 mm Pan gm 3/8" No.4 No.8 No.16 No.50 No.100 0.15 mm 9.5 mm 4.75 mm 2.36 mm 1.18 mm mm 0.3 mm 0.0 од 1597 21419 від 50д 3589 174д Weight retained (g) Percent retained Beitel 15-11-2021 Fineness modulus отсивно о u 4/8²/00 = 5.3 15 діни з 2141-44871.3 61-448203 Божнизис 1.66 50 78.63 21.3 80.29 19.71 35 84421 23 92.22 7.78 174448518 98.02 1.98 чудд 4 /100 = Cumulative = No.30 Percent cumulative 0 53 94.7 766 23-4 Percent passing loo 222 Sieve deviation = 262 (5) ASTM Limit 100 95 100 80 100 50_85 25 60 10_30 2_10
Q2. Using the sieve results of a batch of sand and gravel shown in the table below and if the P sand is 38 % and P Gravel is 62 %. answer the below questions: Amount Amount Sieve No. Retainded (g) Retainded (g) (Sand) (Gravel) 1.5" 20 1" 32 0.75" 17 169 0.5" 51 141 3/8" 119 118 No. 4 104 16 No. 8 44 14 No. 16 15
Show how to graph given data (sieve analysis)