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The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.
- a)22.67
- b)15.11
- c)7.55
- d)30.22
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
The compaction of on embankment is carried out in 300 mm thickness of ...
Energy in standard proctor test
= (Wt. of hammer (kg) × free fall (m) × layer × blows per layer)/ (volume of soil mass taken)
Volume of soil mass taken = 1000 cc ≈ 1 lit.
Energy in standard proctor test = (2.6 × 0.310 × 3 × 25)/10-3
= 60450 kg m/m3
60450 = [40/(0.3 × 0.05)] × 1.5 × n (50% due to overlap)
n → no. of passes
∴ n = 15.11 ≈ 15
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The compaction of on embankment is carried out in 300 mm thickness of ...
Question:
The compaction of an embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pass over the compacted layer due to overlap, calculate the number of passes required to develop compaction energy equivalent to IS light compaction for each layer.
Options:
a)22.67
b)15.11
c)7.55
d)30.22
Answer:
The formula for calculating energy developed per unit volume of soil is given by:
E = (W.H) / A
where,
E = Energy developed per unit volume of soil (kg-m/m³)
W = Weight of rammer (kg)
H = Height of fall (m)
A = Area of the foot of the rammer (m²)
The energy developed per drop of the rammer is given as 40 kg-m. Therefore, the energy developed per unit volume of soil will be:
E = 40 / 0.05
E = 800 kg-m/m³
The IS light compaction standard requires the development of 720 kg-m/m³ of energy per unit volume of soil. Therefore, the number of passes required to develop this energy can be calculated as:
Number of passes = (720 / 800) x 100 / 150
Number of passes = 15.11
Therefore, the correct answer is option B (15.11).
The compaction of an embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pass over the compacted layer due to overlap, calculate the number of passes required to develop compaction energy equivalent to IS light compaction for each layer.
Options:
a)22.67
b)15.11
c)7.55
d)30.22
Answer:
The formula for calculating energy developed per unit volume of soil is given by:
E = (W.H) / A
where,
E = Energy developed per unit volume of soil (kg-m/m³)
W = Weight of rammer (kg)
H = Height of fall (m)
A = Area of the foot of the rammer (m²)
The energy developed per drop of the rammer is given as 40 kg-m. Therefore, the energy developed per unit volume of soil will be:
E = 40 / 0.05
E = 800 kg-m/m³
The IS light compaction standard requires the development of 720 kg-m/m³ of energy per unit volume of soil. Therefore, the number of passes required to develop this energy can be calculated as:
Number of passes = (720 / 800) x 100 / 150
Number of passes = 15.11
Therefore, the correct answer is option B (15.11).
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The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.a)22.67b)15.11c)7.55d)30.22Correct answer is option 'B'. Can you explain this answer?
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The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.a)22.67b)15.11c)7.55d)30.22Correct answer is option 'B'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.a)22.67b)15.11c)7.55d)30.22Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.a)22.67b)15.11c)7.55d)30.22Correct answer is option 'B'. Can you explain this answer?.
The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.a)22.67b)15.11c)7.55d)30.22Correct answer is option 'B'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.a)22.67b)15.11c)7.55d)30.22Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The compaction of on embankment is carried out in 300 mm thickness of lifts. The rammer used has foot area of 0.05 sq. m. The energy developed per drop of the rammer is 40 kg-m. Assuming 50% more energy in each pas over the compacted layer due to overlap, calculate a number of purses required to develop compaction energy equivalent to IS light compaction for each layer.a)22.67b)15.11c)7.55d)30.22Correct answer is option 'B'. Can you explain this answer?.
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