2018

Sand Cone Method to Determine Density – A Solved Example

Hi,This is an example of a problem that deals with the application of the Sand Cone Test to determine the density of the compacted soil. The solution is given in details. Problem: A sand cone density test was conducted on soil compaction at a land development project. It has the following data:the volume of the standard Proctor […]

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Treating the Dredged Marine Sediment with Bentonite and OPC

HiSediments that are dredged from the water bodies such as reservoir, lakes or oceans are weak in strength and highly compressible, in general. This is nothing more than a waste material. However, it can be treated with certain chemicals such as the Bentonite and OPC(Ordinary Portland Cement) to give it the desired properties of a

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Solved Example of Pinned Truss – the Average Normal and Shear Stresses in Members and Pins

Hi,A simple truss has pin-connected members. The members carry only axial forces, but the pins have to bear the shear stresses. Given example shows the calculation for the minimum required diameter of pin-connected in double shear.   Problem(as in Figure 1) Two structural members AB and BC (shown below) are connected by a pin at

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Area of Traverse by Trapezoidal and Simpson’s Rule, Comparison with a Solved Example

Hi,   There are two problems written in the image, both are irregular sections. These problems can be solved using Trapezoidal Rule or Simpson’s Rule, as elaborated in the solution section below. Problem: Determine the area enclosed between the irregularly bounded figure. Solution: P.2 (i)As per the Trapezoidal Rule, Area A = 10/2* {15.3 +

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How to Balance a Closed Traverse – Use of Compass Rule (Bowditch Method) – Solved Example

Hi, Download the image below to read them properly. The solution is handwritten on a page and then clicked. It shows the angular closure, correction, azimuth, bearings, latitude and departure and corrected distance calculations. Problem:Following is the Field Data for a 4 sided, closed traverse, and you have to find the azimuth, bearings and corrected distances

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Complete Derivation of Mass Moment of Inertia of Hemisphere(Half Sphere) about the Symmetric Axis of Rotation.

The top half of the sphere is created by rotating the circle of x2+y2=r2 around the y-axis. If the rigid body has mass m and density (rho), find the mass moment of inertia about y-axis in terms of m and rho.  Solution First, consider a small slice of the hemisphere of thickness ‘dy’, and write

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How to Plot graph with Multiple Data Sets in Microsoft Excel (scatter function)

Hi, If you have more than one data sets to be plotted on the graph, you can easily do that in excel under the ‘insert’  scatter option. Follow the given eight steps with images.  Step.1 Make three data sets separately, and choose ‘scatter’ graph under ‘insert’ menu. Step.2 Right click on the scatter graph, and select ‘select

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Use Method of Section on Gambrel Truss and Find section Forces – Solved Example

Hi,Problem:This is a Gambrel Truss with 5 known load forces on it as shown below. Let’s say the reaction forces are already found, at A(0, 959.6 N) and at H(0, 450 N). Each applied load is 300 N.Use the method of sections to determine all the unknown external forces acting on section ABG. Using your

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High Point of a Vertical Crest Curve – Solved Example

Hi,Problem:A 1200 ft crest vertical curve is defined by grades of +2.0 percent and -4.0 percent, respectively. If the elevation and station of the PVC is 200 ft and 202 + 30 respectively. determine the elevation and station of the highest point on the curve.Solution:Thank you for your kind visit. If you have any doubt,

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