Question 1: Earth whose in situ weight is 112 pcf, whose loose weight is 95 pcf and whose compacted weight is 120 pcf is placed in a fill at the rate of 250 cy/hr, measured as compacted earth. The thickness of the compacted layers is 6 inch. A compactor with a roller drum width of 84 inch is used to compact the material at a speed of 3.5 mph. Assume a 55 min hour operating efficiency. Determine the number of rollers required to provide the necessary compaction rate if eight drum passes are specified for each layer of earth. O 1 Roller O 3 Rollers O O Roller O 2 Rollers
Question 1: Earth whose in situ weight is 112 pcf, whose loose weight is 95 pcf and whose compacted weight is 120 pcf is placed in a fill at the rate of 250 cy/hr, measured as compacted earth. The thickness of the compacted layers is 6 inch. A compactor with a roller drum width of 84 inch is used to compact the material at a speed of 3.5 mph. Assume a 55 min hour operating efficiency. Determine the number of rollers required to provide the necessary compaction rate if eight drum passes are specified for each layer of earth. O 1 Roller O 3 Rollers O O Roller O 2 Rollers
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter6: Soil Compaction
Section: Chapter Questions
Problem 6.16P
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![Question 1: Earth whose in situ weight is 112 pcf, whose loose weight is 95 pcf and whose
compacted weight is 120 pcf is placed in a fill at the rate of 250 cy/hr, measured as compacted
earth. The thickness of the compacted layers is 6 inch. A compactor with a roller drum width of 84
inch is used to compact the material at a speed of 3.5 mph. Assume a 55 min hour operating
efficiency. Determine the number of rollers required to provide the necessary compaction rate if
eight drum passes are specified for each layer of earth.
O 1 Roller
O 3 Rollers
O O Roller
O 2 Rollers](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7516c6ac-ec52-48b2-b8b2-6c1da9f5ffdf%2Fdb72c905-a1a6-44ee-9c25-ebb6a551d633%2Fllutzik_processed.png&w=3840&q=75)
Transcribed Image Text:Question 1: Earth whose in situ weight is 112 pcf, whose loose weight is 95 pcf and whose
compacted weight is 120 pcf is placed in a fill at the rate of 250 cy/hr, measured as compacted
earth. The thickness of the compacted layers is 6 inch. A compactor with a roller drum width of 84
inch is used to compact the material at a speed of 3.5 mph. Assume a 55 min hour operating
efficiency. Determine the number of rollers required to provide the necessary compaction rate if
eight drum passes are specified for each layer of earth.
O 1 Roller
O 3 Rollers
O O Roller
O 2 Rollers
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