Pavement Design (with examples) Outline Pavement Purpose Pavement Significance Pavement Condition Pavement Types Flexible Rigid Pavement Design Example Pavement Purpose Load support Smoothness Drainage Pavement Significance How much pavement? – 3.97 million Centerline miles in U.S. – 2.5 million miles (63%) are paved – 8.30 million lane-miles total – Largest single use of HMA and … Read more
Elements of Theory of Elasticity (with solved examples) Introduction: Applications of the finite element method include elasticity problems also. Theory of elasticity deals with the stress and displacements in elastic solids generated by external forces. Some Important Aspects in theory of elasticity: Stress Components There are two types of stresses acting on each face of … Read more
Fundamentals of Prestressed Concrete Bridge (with solved example) Introduction: In prestressed concrete, a prestress force is applied to a concrete member and this induces an axial compression that counteracts all, or part of, the tensile stresses set up in the member by applied loading. In the field of bridge engineering, the introduction of prestressed concrete … Read more
Classical Rayleigh Ritz Method Introduction: Classical Rayleigh Ritz Method is named after Walther Ritz and Lord Rayleigh and is widely used. Classical Rayleigh Ritz Method is a method of finding displacements at various nodes based on the theorem of minimum potential energy. Departure from classical Rayleigh Ritz Method leads to FEM. The two departures are: … Read more
AutoCAD 2012 Fundamentals for Civil Engineers [tubepress mode=”playlist” playlistValue=”PLp_rNTtjt8V6u3anFy03C_4G2dl-5Bc-Y”] Course Title: AutoCAD 2012 Essentials for Civil Engineers 1. The AutoCAD Interface (25 Mins) Model space Toolbars Pull downs AutoCAD’s command line Dockable palettes The Status bar Saving your workspace Essential settings 2. Opening, Viewing, and Saving Drawings (20 Mins) Opening an AutoCAD drawing Mouse functions … Read more
courtesy:Govardhana Rao Introduction to Vibration Analysis of Structures Civil engineering structures are always designed to carry their own dead weight, superimposed loads and environmental loads such as wind or waves. These loads are usually treated as maximum loads not varying with time and hence as static loads. In some cases, the applied load involves not … Read more
Structural dynamics and earthquake engineering 1. Define the concept of dynamic degree of freedom. Give some examples of single degree of freedom systems and multi degree of freedom systems. Answer: Dynamic degrees of freedom are a set of independent displacements/rotations that completely define the displaced position of the mass with respect to its initial position. … Read more
Causes, Evaluation and Repair of Cracks in Concrete Cracks in concrete have many causes. They may affect appearance only, or they may indicate significant structural distress or a lack of durability. Cracks may represent the total extent of the damage or they may point to the problems of greater magnitude. Their significance depends on the … Read more
Unbonded Post-Tensioning System Technology in Building Construction Introduction During the last three decades, unbonded post-tensioning has progressively become the predominant construction choice for commercial concrete buildings in the United States. The utilization of unbonded tendons is now standard practice for concrete structures. Because of their excellent performance record and their economical and versatile application, the … Read more