1. List the three corrections which should be applied to the hydrometer readings.  2. Why is it important to remove the hydrometer from the measuring cylinder between readings? 3. A hydrometer test has the following results; Gs = 2.70, temperature = 240C, and L = 92 mm at 60 minutes after the start of sedimentation. Calculate the diameter of the smallest-size particles that have settled beyond the zone of measurement at that time (use the table in the lab manual to find, A=0.0128).

A dry soil sample has the total mass (kg) shown in the table below. Use the data provided to complete the MVR table and determine the engineering parameters listed below. Write all answers for the mass/volume table to three decimal places and write all the answers for the engineering parameters (w, n. PT.PD. YT.& YD) as real numbers only (i.e. no %) to two decimal places. Be consistent with the units provided but do not include the units in your answer. VOLUME Va = Blank 1 m³ Vw = Blank 2 m³ Vs = Blank 4 m³ V₁ = Blank 6 m³ void ratio = 0.45 water content = Blank 7 porosity = Blank 8 Total density (kg/m3) = Blank 9 Dry density (kg/m3) = Blank 10 Total unit weight (kN/m3) = Blank 11 Dry unit weight (kN/m3) = Blank 12 AIR WATER p=1000 kg/m³ SOLIDS R.D. = 2.70 MASS Ma = 0 kg Mw = Blank 3 kg Ms = Blank 5 kg MT= 452.650 kg

Given the laboratory results of the Atterberg Limits Test in the following figure. Plot the water content versus the number of blows. Determine the nearest value to the Liquidity Index of the soil. Figure 15 A. Liquid Limit Test Number-> Number oi BlowNS Weight of Wet Soil +Container, g Weight of Dry Soil + Corntainer, g Weight of Container, g Weight of Water, a Weight of Dry Soil g Water Content, % 38 22:47 19.44 12.74 29 21.29 18.78 13.24 20 21.27 18.75 13.20 14 26.12 22.10 13.27 B. Plastic Limit and Natural Water Content Plastic Limit Natural Water Content 1 Test Number > Weight of Wet Soil +Container, g Weight of Dry Soil + Container, g Weight of Container, g Weight of Water, g Weight of Dry Soil, g Water Content, % Average, % 23.20 20.42 72.90 22.80 20.19 12.95 17.53 14.84 9,50 16.97 14.36 9.55 O 0.8 O 1.8 O 0.5 O 1.2

A hydrometer test has the following result: Gs = 2.75, temperature of water = 23°C, and L = 12.8 cm at 100 minutes after the start of sedimentation (see Figure 1.5). What is the diameter D of the smallest-size particles that have settled beyond the zone of measurement at that time (that is, † = 100 min)?