Theory 1 : Lecture in introduction to structural analysis
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Structural analysis is the process of determining how systems of forces and moments act upon structures such as buildings and bridges. Engineers use structural analysis to understand how external and internal forces are distributed throughout a structure, and how components will react to these forces. The goal of structural analysis is to ensure a structure can withstand expected forces without failing or experiencing excessive deformation.
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Lec.1 introduction to the theory of structures. types of structures, loads,
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This document describes how to draw the influence lines for the force in member GF and member FC of a truss. It first shows the truss and then provides the steps to calculate the influence lines when a unit load is placed at different positions on the truss members AB, BC, and CD. The influence lines are drawn based on the calculated forces in GF and FC as the load moves along each member.
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A lecture notes in design and investigation of singly reinforced beams and one-way slabs using NSCP 2010 and ACI 2011.Trusses
Trusses are structures composed of straight members connected at joints. They are used to support roofs and bridges. Trusses can only experience axial loads and moments are excluded. To determine the forces in each member, assumptions are made including that loads only act at end points. The internal forces are calculated using methods like the joints method where equilibrium is applied at each node. For example, in one truss problem the reactions were first calculated and then equilibrium was applied at each node to determine the tensions and compressions in each member.
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