The following are the results of a field unit weight determination test performed using sand cone method: o Calibrated dry density of Ottawa Sand = 1570 kg/m3 o Calibrated mass of Ottawa sand to fill the cone = 0.545 kg o Mass of jar + cone + sand (before use) = 7.95 kg o Mass of jar + cone + sand (after use) = 5.140 kg o Mass of moist soil from hole = 3.286 kg o Moisture content of moist soil = 4.83% Determine the field dry unit weight in kN/m3. Use 3 decimal places

The following are the results of a field unit weight determination test performed using sand cone method: o Calibrated dry density of Ottawa Sand = 1570 kg/m3 o Calibrated mass of Ottawa sand to fill the cone = 0.545 kg o Mass of jar + cone + sand (before use) = 7.95 kg o Mass of jar + cone + sand (after use) = 5.140 kg o Mass of moist soil from hole = 3.286 kg o Moisture content of moist soil = 4.83% Determine the field dry unit weight in kN/m3. Use 3 decimal places

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The following are the results of a field unit weight determination test performed on the soil by means of the sand cone method. Calibrated dry density of Ottawa sand = 1570 kg/m3 Calibrated mass of Ottawa sand to fill the cone = 0.545 kg Mass of jar + cone + sand (before use) = 7.59 kg Mass of jar + cone + sand (after use) = 4.78 kg Mass of moist soil dug from hole = 3.007 kg Water content of moist soil = 10.2% Max dry unit weight = 19 kN/m3 Find the dry unit weight in kN/m3.
4. Following are the results of a field unit weight determination test on a soil with sand cone method: • Calibrated dry density of Ottawa sand = 1667 kg/m • Calibrated mas of Ottawa sand to fill the cone = 0.117 kg • Mass of jar + cone + sand (before use) = 5.78 kg • Mass of jar + cone + sand (after use) = 2.85 kg • Mass of moist soil from hole = 3.42 kg • Moisture content of moist soil =13.6% Find the dry unit weight of the soil
A specific gravity test was performed on three soil samples, and the following data were collected: Material weight of empty pycnometer weigt of dry soil weight of weight of pycnometer pycnometer Temperature + water +water+soil g Sand 1 106.6 Sand 2 106.6 Sand 3 106.6 2-a) Briefly describe the test procedure and discuss its applications in practice 2-b) The corrected specific gravity of SAND 1 G5,20 2-c) The corrected specific gravity of SAND 2 G5,20 2-d) The corrected specific gravity of SAND 3 G5,20 55.4 50 60 === === g 385.5 371 392 351 340 355 с 18 24 20
hw assignment
The modified Proctor test (ASTM D 698, method C) was performed for a soil with G, = 2.70, and the results are as follows: Moist Weight in Mold, gf Water Content, % 6.5 3250 9.3 3826 12.6 4293 14.9 4362 17.2 4035 18.6 3685 (a) Plot the Ya versus w relation. (b) Determine Ya.max and wopt• (c) Calculate S and e at the maximum dry unit weight point. (d) What is Y at w. (e) What is the range of water content if the relative compaction (R.C.) is required to be 95% of the modified Proctor Ya.max? pt? opr?
In an ongoing land development project, a Contractor requested for a concrete pouring request. After conducting a field density test in Road Lot 1 and 2, the results of Sand Cone Method (ysand = 16.353 kN/m³) are as follows: Total Weight of Retained Mass of Sand Moisture Content (%) Location Weight of Soil Sample (kg) 1.39 1.30 Sand (kg) 7.40 7.40 (kg) Road Lot 1 Road Lot 2 6.2 20% 6.3 19% Properties of Soil base on Soil Investigation Result: Specific gravity of Soil Particles – 2.75 Weight of Soil Sammple - 1.6309 kg Volume of Soil Sample – 0.0009 cu.m. Determine the following: a. Maximum dry unit weight (kn/m^3) of soil sample if optimum moisture content is 22% b. As Civil Engineer, will you allow concrete pouring in Road Lot 1 base on FDT result? (Relative compaction should be equal or higher than 95%) c. As Civil Engineer, will you allow concrete pouring in Road Lot 2 base on FDT result? (Relative compaction should be equal or higher than 95%)
As part of a quality controlprogram, the field inspection engineer conducted a sand cone test to determine the field density. The following data were recorded using the sand cone method. • Calibrated dry density of Ottawa sand = 1667 ??/?3• Mass of Ottawa sand to fill the cone = 0.117 kg• Mass of jar + cone + sand (before use) = 6.1 kg• Mass of jar + cone + sand (after use) = 2.83 kg• Mass of moist soil from hole = 3.35 kg• Moisture content of moist soil = 16.1%a. Determine the dry unit weight of compaction in the field. (ANS: 14.97kn/m3) PLS ANSWER NUMBER 2 WITH COMPLETE SOLUTION 2. What is the relative compaction in the field if the maximum dry unit weight in the laboratory is 15.93 ??/?3?
Sand-cone equipment is used to determine an in-place unit weight (field density test) on a compacted earth fill. The sand used in the cone is known to have a bulk density of 15.73 kN/m3 Wet weight of soil sample dug from test hole = 2100 g Dried weight of soil sample = 1827 g Weight of sand (sand core) to fill the test hole = 1636 g a) Compute the water content. b) Compute the in-place dry unit weight of tested soil. c) Compute the percentage of compaction of the tested soil if the laboratory moisture-unti weight curve indicates a dry unit weight of 18.09 kN/m3 and a optimum moisture content of 13%.
Subject is soil Mechanics
4.2 For a field test the technician is using a sand with a density of 96.7 pcf in his sand cone test. Calculate the dry density, degree of saturation and moisture content of a compacted fill using the following data that the technician collected: Weight of sand cone bottle before test (full of sand): Final weight of sand cone (some sand remains): Weight of sand needed to fill cone: Weight of fill soil excavated from hole + bucket: Weight of bucket used to collect fill soil: 15.14 Ibs 3.97 Ibs 2.67 Ibs 12.37 Ibs 0.76 Ibs Moisture content of fill soil: Empty can: 48.1 g Can + moist soil: 253.7 g Can + dry soil: 237.1 g
A 1000g of sand has been soaked for at least 24hours prior to lab. After drying the sample to saturated surface dry condition, the samples were split into two and put in tare cans. Can1+sample weigh 800g and can2+sample weigh 300g. Can1+sample was used for determining the specific gravity, where volume of water displaced in flask is 320cc. Can2+sample was used for determining the oven-dry weight which resulted to 280g. If the weight of can 1 and 2 is 5g and 6g respectively, determine the Absorption capacity and specific gravity of sand.
Following the sieve analysis and the specific gravity of "SAND 1", a hydrometer test was performed on the soil that passed the #40 sieve, and the following data was collected: Material SAND 1 Time min 2 UN 5 8 12 15 30 45 60 1440 hydrometer reading R 16.5 16 15.9 15.8 15.6 15.4 15.3 15.2 14.2 (Hint: Use the specific gravity and temperature from the Specific gravity test of SAND 1) 3-a) Briefly describe the test procedure and discuss its applications in practice 3-b) Percentage of fines (less than 0.075 mm) [Hint: from the sieve analysis data] =--% 3-c) Percentage of silt (less than 0.075 mm and greater than 0.002 mm) = --% [Hint: from sieve analysis and hydrometer test] 3-d) Percentage of clay (less than 0.002 mm) =--%