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Steven Woodruff
เข้าร่วมเมื่อ 6 ต.ค. 2011
Introduction to Engineering: Excel
This video explains basic functionality in Excel, including performing calculations, using built-in functions, cell referencing, line and scatter plots, and determining trend lines.
มุมมอง: 53
วีดีโอ
Quick Soil ID Tests
มุมมอง 2.6K8 ปีที่แล้ว
Description of the procedure for finding the coarseness, dry strength, plasticity, and toughness soil using ASTM D-2488. Filmed at Tufts University for CEE 42 - Intro to Geotechnical Engineering
Atterberg Limit Tests
มุมมอง 76K8 ปีที่แล้ว
Description of the procedure for finding the plastic and liquid limits of a soil using ASTM D-4318. Filmed at Tufts University for CEE 42 - Intro to Geotechnical Engineering.
You should rename this: How not to run Atterberg Limit Tests.
Why?
+Steven Woodruff 1) The soil sample that you roll into an ellipse for the plastic limit test should be approximately 2 grams. 2) The plastic limit is defined as the moisture content at which an ellipsoidal mass of soil 1/8 in. in diameter just crumbles when rolled. The ellipse in this video is probably 1/2 in to 1 in in diameter. 3)The groove should be cut from the top of the cup down for the liquid limit test. 4)Get your hand off the liquid limit device when turning the crank. 5)The closure of the soil pat should only be 1.3 cm. The length of the soil pat closure is approximately 1.5 in. in the video. 6) The crank should be turned at a rate of two blows per second. The person is this video is turning the crank too quickly.
Good to know!