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: Location Total Weight of Retained Mass Sand (kg) 7.40 7.40 Moisture Content (%) Weight of Soil Sample _(kg) 1.39 of Sand (kg) 6.2 Road Lot 1 20% Road Lot 2 6.3 19% 1.30 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%)

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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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%)
Transcribed Image Text: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%)
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