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Wind Moment design analysis - Statistics Project Example
According to the euro code 0 ‘basis of structural is, ‘a structure is an organized combinations of connected parts designed to carry loads and provide adequate rigidity.’ Unbraced steel rely on the stiffness and the resistance of its frame to wind forces. In the initial…
To counteract this old technological view, wind moments or wind connections remain as the only simple method design for multipurpose frames. Though developed earlier, the design was initially developed to compensate for the wind loads while the preferred connection method was by angles, bolting or/and small T-stab sections this were used to carry the column flanges and the bam flanges.
Wind moment apply to row rise frames of to four or less. The method assume that when structure are subject to wind loads. The connections behave normally as rigid joints (figure1) and that under vertical loads, the connections act normally simple connections; figure 2.
In the design of the wind moments, the frames are braced to prevent minor axis sway of columns at each floor level and roof level. It should also ensure that the frames also do not sway in either principle directions.
Designer view this deign as having more advantage as compared to the conventional design grades. They are simple and suitable for manual calculations. The frames of the structure are taken to be statically determinate. Internal forces and moments are not depended on the relative stiffness of the individual structural members.
In constructions, this methodological design is relatively simple of the steelwork in comparison to full rigid construction. It has been determined that the steelwork contractors are always concerned with making steel work connections in the workshops. This increases the cost of construction by as high as 50% of the total cost of the completely erected work. With the wind moment design, the connections are simplified and thus reduced fabrication input. This has a notable reduction in the total cost of steel frame erection.
Since the frame is subject to lateral wind, it is essential for the wind moment design to embracethe connection that should be ductle enough to accommodate rotations. Moment connection as shown in figure 3 offers the required support to provide the ...