. Deep ocean cable burial concept development. Cables, Submarine; Marine engineering; Civil engineering. Appendix C POWER ANALYSIS OF AUGER TRENCHING To estimate the power required to auger a trench in the seafloor consider a single vertical auger with the following characteristics Outside diameter, D = 4 in. o Inside diameter, D. = 2 in. Length, I = 36 in. Pitch, p = 3.6 in.. hoH Figure C-1. Auger configuration. With a 3 "slug" ,6-inch pitch, 10 revolutions of the auger are required for a of soil cut from the bottom of the trench to reach the top. Assumptions: Half of the auger cuts
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. Deep ocean cable burial concept development. Cables, Submarine; Marine engineering; Civil engineering. Appendix C POWER ANALYSIS OF AUGER TRENCHING To estimate the power required to auger a trench in the seafloor consider a single vertical auger with the following characteristics Outside diameter, D = 4 in. o Inside diameter, D. = 2 in. Length, I = 36 in. Pitch, p = 3.6 in.. hoH Figure C-1. Auger configuration. With a 3 "slug" ,6-inch pitch, 10 revolutions of the auger are required for a of soil cut from the bottom of the trench to reach the top. Assumptions: Half of the auger cuts new material The same forces apply as for trenching (bearing resistance and friction) A where S N u TOT = S A. N + f c = undrained shear strength = 4 lb/in = frontal area of the auger blade = dimensionless constant (^ 3) = side area of the auger = 4.7 in. 1 - 2 — TT D a = lib in. Then 68. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Rockwell, P. K; Naval Construction Battalion Center (Port Hueneme, Calif. ). Civil Engineering Laboratory. Port Hueneme, Calif. : Naval Construction Batallion Center