! 4.2. A 16 ft wide sand bed stream (Sf=0.002, n'= 0.015, with smooth channel banks) has the following particle size distribution for its bed sediment: Accumulated Finer, % 0.07 0.33 2.0 7.2 21 36 55.5 75.4 88.4 99.3 Sieve Opening, mm 0.05 0.13 0.27 0.32 0.52 0.71 0.89 1.3 1.95 3.50 Build your calculations for water depth of 0.35 ft with corresponding unit discharge of 0.65 ft/sec. Use Ss=2.65, p=1.934 #.s/ft' and v=0.989 x 10 ft/s for water. Find the following by choosing the correct answer: 1- The d50 from particle size distribution curve is equal to: 0.54 mm 0.70 mm 0.85 mm 1.30 mm 2- The d65 from particle size distribution curve is equal to: 1.25 mm 1.10 mm 0.85 mm 0.65 mm 3- The roughness parameter based on Meyer-Peter-Muller (MPM) (neglect the bedforms) bed-load transport model is equal to: 0.80 1.00 0.90 0.65

Principles of Foundation Engineering (MindTap Course List)
8th Edition
ISBN:9781305081550
Author:Braja M. Das
Publisher:Braja M. Das
Chapter16: Soil Improvement And Ground Modification
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4.2. A 16 ft wide sand bed stream (Sf=0.002, n'= 0.015, with smooth channel banks) has
the following particle size distribution for its bed sediment:
Accumulated Finer, % 0.07 0.33 2.0 7.2 21 36 55.5 75.4 88.4 99.3
Sieve Opening, mm 0.05 0.13 0.27 0.32 0.52 0.71 0.89 1.3 1.95 3.50
Build your calculations for water depth of 0.35 ft with corresponding unit discharge of 0.65
ft/sec. Use Ss=2.65, p=1.934 #.s/ft' and v=0.989 x 10 ft/s for water. Find the
following by choosing the correct answer:
1- The d50 from particle size
distribution curve is equal to:
0.54 mm
0.70 mm
0.85 mm
1.30 mm
2- The d65 from particle size
distribution curve is equal to:
1.25 mm
1.10 mm
0.85 mm
0.65 mm
3- The roughness parameter based
on Meyer-Peter-Muller (MPM)
(neglect the bedforms) bed-load
transport model is equal to:
0.80
1.00
0.90
0.65
Transcribed Image Text:! 4.2. A 16 ft wide sand bed stream (Sf=0.002, n'= 0.015, with smooth channel banks) has the following particle size distribution for its bed sediment: Accumulated Finer, % 0.07 0.33 2.0 7.2 21 36 55.5 75.4 88.4 99.3 Sieve Opening, mm 0.05 0.13 0.27 0.32 0.52 0.71 0.89 1.3 1.95 3.50 Build your calculations for water depth of 0.35 ft with corresponding unit discharge of 0.65 ft/sec. Use Ss=2.65, p=1.934 #.s/ft' and v=0.989 x 10 ft/s for water. Find the following by choosing the correct answer: 1- The d50 from particle size distribution curve is equal to: 0.54 mm 0.70 mm 0.85 mm 1.30 mm 2- The d65 from particle size distribution curve is equal to: 1.25 mm 1.10 mm 0.85 mm 0.65 mm 3- The roughness parameter based on Meyer-Peter-Muller (MPM) (neglect the bedforms) bed-load transport model is equal to: 0.80 1.00 0.90 0.65
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