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Calculation example - Determine the specific gravity of a soil grain Gs
12
July

Calculation example - Determine the specific gravity of a soil grain Gs

Calculate the ratio of the density of coal ash to the density of the water (Specific gravity of coal ash Gs)

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Calculation example - Determine the water content within a soil sample
26
June

Calculation example - Determine the water content within a soil sample

Determine water content within a soil sample as a percentage, by drying the soil in the oven at 105oC for 24 hours.

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Gauss's Area Calculation Formula
31
May

Gauss's Area Calculation Formula

Calculate the surface area of a simple (non-self-intersecting) n sides polygonal shape with known Cartesian coordinates in the plane for all of its vertices. The main concept of the method is to divide the main polygon in n trapezoids and to cross-multiply corresponding coordinates to find the area enclosing the polygon (green trapezoids), and subtract from it the surrounding trapezoids (red) to find the area of the polygon within. It is also called the shoelace formula because of the constant cross-multiplying for the coordinates making up the polygon, like tying shoelaces. Mainly applicable in topography.

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Calculation example - Three Point Resection
23
April

Calculation example - Three Point Resection

Determine the coordinates of an unknown station P from three (3) previously coordinated reference points A, B and C visible from station P, only by measuring the angles subtended by lines of sight from station P to the three coordinated points. Resection technique is commonly implemented when the existing reference points are not accessible during a survey.

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Calculation example - Calculate the Bearing Angle of any Baseline of a Traverse Network (Third Fundamental Surveying Problem)
07
March

Calculation example - Calculate the Bearing Angle of any Baseline of a Traverse Network (Third Fundamental Surveying Problem)

Calculate the bearing angle of any line connecting consecutive points of a traverse framework.

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Calculation Examples