How to Calculate the Cost of Grid Structure

How to Calculate the Cost of Grid Structure

The bolt ball nodes of the grid structure are solid core, and only a portion of their connection with the members will be pre embedded and hollowed out during factory production and processing. The members of the grid generally have a hollow cross-section, such as round steel pipes, galvanized square steel, etc., and can also use cold rolled steel sections, cold drawn thick walled steel sections, etc.

The weight calculation of the grid consists of two parts: the weight of the members and the weight of the nodes. The node weight of a grid generally accounts for 15% -25% of the total weight of the grid members. The poles of the grid are mostly made of stainless steel plates, with a general density of 78.5kn/m3. Generally, its weight is calculated based on electronic computers, but it can be roughly estimated as the total area of the grid enterprise. The weight of the two-layer grid can be estimated using the following formula: g0=a * (qw * * 0.5) * l/200, where the a-index is taken as 1.0 when the members are made of seamless steel pipes; When using section steel, take 1.2; Qw - Index value of flat roof load or floor load other than the weight of the grid frame; The short span of the l-grid.

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