## Structural MechanicsStructural Mechanics, first published in 1958, has become established as a classic text on the theory of structures and the design methods of structural members. The book clearly and logically presents the subject's basic principles, keeping the mathematical content to its essential minimum.The fifth edition has been revised to take into account changes in standards. This thorough revision clarifies the content with updated design examples, a new setting of the text and re-drawn line diagrams throughout. Morgan and Williams' original simplicity of the mathematical treatment has been maintained, but Durka has now placed more emphasis on the relevance of structural mechanics to the process of structural design. The initial chapters of the book deal with the concept of forces and their effect on structural materials and elements in terms of stress and strain. The significance of the shape of the cross section of structural elements is then considered. Finally, the book finishes with the design of simple structural elements such as beams, columns and gravity retaining walls. * emphasises full understanding of the basic principles rather than mathematical agility*all chapters now have e |

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### Contents

Concurrent coplanar forces | 7 |

Non concurrent coplanar forces | 22 |

Moments of forces | 39 |

Copyright | |

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angle anticlockwise applied loads arrow axial load Calculate the maximum Calculate the safe cantilever centre of gravity centroid clockwise column compressive stress considered contraflexure Determine the reactions Determine the tension diameter distance effective length equal equilibrium Example factor of safety fibres flange flitch beam force diagram frame free-body diagram hinge horizontal component inertia joint joist kN Fig kN load kN/m limit state design line of action link polygon load diagram material maximum bending metre millimetres modulus of elasticity Neglecting the weight neutral axis parallelogram of forces permissible stress point load position pressure pull radius of gyration rectangular reinforced concrete resistance safe load shear force shown in Fig simply supported slenderness ratio soil Solution span strength string structural strut Taking moments tensile tensile stress thickness timber beam timber post triangle of forces truss uniform load uniformly distributed load vertical component weld X-X axis