Tuesday, November 28, 2017

moment of inertia of a composite section about y-axis.

Problem:
Find the moment of inertia about y-axis.


Solution:

Wednesday, November 22, 2017

Solved Example - Cable and Determinate Frame - How to find Forces at the Internal Hinges and supports

Hi,
Consider the frame in the diagram. If the tension in the cable that runs between H and I is 50 lbs, determine the loads acting on the frame at A and at C, and on member EH.


Solution:


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Tuesday, November 21, 2017

Solved Example - Beam with Hinge - Shear Force and Bending Moment Diagram

Given the determinate continuous beam in the following, not that load 24k is applied at the mid-point of BC(you may define it as D.)
Plot the shear and moment diagram for the beam A-B-C.
Draw the Shear force and Bending moment diagram for the determinate beam

A cable applied with concentrated loads, find the sag - Solved Example.

Example: Given cable with three concentrated load.
If P1= 5.9 lbs, P2 = 5.9 lbs, and P3 = 10.9 lbs, Determine the reaction at E and the distances dB and dD.




If you have any doubt, please ask in the comment box.

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Tuesday, November 7, 2017

How to Solve a simple Truss problem using Method of Joints - solved example.

Here is the problem of a determinate truss.


And here is its joint by joint solution.