An arch may be defined as a plane-curved bar or rib supported and loaded in a way that makes it act in direct compression. For example, the structure in Fig. 1a is a parabolic symmetrical arch that is loaded with... (Continue reading)
Frames: Portal frames are frequently used over the entrance of a bridge and as a main stiffness element in building design in order to transfer horizontal forces applied at the top of the frame to the foundation. On bridges, these... (Continue reading)
Elastic analysis deals with the study of strength and behavior of the members and structure at working loads. Frames can be analyzed by various methods. However, the method of analysis adopted depends upon the types of frame, its configuration (portal... (Continue reading)
The loads are broadly classified as vertical loads, horizontal loads and longitudinal loads. The vertical loads consist of dead load, live load and impact load. The horizontal loads comprises of wind load and earthquake load. The longitudinal loads i.e. tractive... (Continue reading)
This was the traditional method of design not only for reinforced concrete, but also for structural steel and timber design. The method basically assumes that the structural material behaves as a linear elastic manner, and that adequate safety can be... (Continue reading)
The entire process of structural planning and design requires not only imagination and conceptual thinking but also sound knowledge of practical aspects, such as recent design codes and bye-laws, backed up by ample experience, institution and judgment. It is emphasized... (Continue reading)
In the moment distribution method, every joint of the structure to be analysed is fixed so as to develop the fixed-end moments. Then each fixed joint is sequentially released and the fixed-end moments (which by the time of release are... (Continue reading)
Having set up the basics for studying equilibrium of bodies, we are now ready to discuss the trusses that are used in making stable load-bearing structures. The examples of these are the sides of the bridges or tall TV towers... (Continue reading)
STAAD Pro is the professional’s choice for steel, concrete, timber, aluminum and cold-formed steel design of low and high-rise buildings, culverts, petrochemical plants, tunnels, bridges, piles and much more! A comprehensive and integrated finite element analysis and design solution, including... (Continue reading)
The airframe of a fixed-wing aircraft consists of the following five major units: Fuselage Wings Stabilizers Flight controls surfaces Landing gear A rotary-wing aircraft consists of the following four major units: Fuselage Landing gear Main rotor assembly Tail rotor assembly... (Continue reading)
First moment Forces are distributed continuously over an area on which they act, it is often necessary to calculate the moment of theses forces about an axis Second moment The intensity of the force (pressure or stress) is proportional to... (Continue reading)
Beams are long and slender structural elements, differing from truss elements in that they are called on to support transverse as well as axial loads. Their attachment points can also be more complicated than those of truss elements: they may... (Continue reading)
Deflection of beams with various support and load conditions with various methods is explained. All the methods are explained with examples. Analysis of struts is also explained.Download the complete file... (Continue reading)
A steel-concrete composite column is a compression member, comprising either a concrete encased hot-rolled steel section or a concrete filled tubular section of hot-rolled steel and is generally used as a load-bearing member in a composite framed structure. Typical cross-sections... (Continue reading)
The stiffness method of analysis is the basis of all commercial structural analysis programs. The focus of this tutorial is development of these equations that only take into account bending deformations, i.e., ignore axial member deformations. Within the assumptions, the... (Continue reading)
Large-capacity ground-supported cylindrical tanks are used to store a variety of liquids, e.g. water for drinking and fire fighting, petroleum, chemicals,and liquefied natural gas. Satisfactory performance of tanks during strong ground shaking is crucial for modern facilities. Tanks that were... (Continue reading)