Steel consumption is always an important index to evaluate the portal-framed structure,and unreasonable building size will lead to the demand in steel consumption and finally to the increase in cost;so it s of great importance to study the relation between size(including post spacing and span etc.

In order to choose the dimension of plane lattice structure scientifically and quickly, the steel consumptions of more than 400 lattice structures with different dimensions and shapes were analyzed.

Taking the 45m×81m double cylindrical mesh as an example,the reseach is conducted on the effect of the arrangement of the double cylindrical mesh on the rigidity of the mesh and steel consumption.

The comparison of weight of steel for frame structures and braced frame structures under horizontal load;

By the analysis of several typical structures and members--a heavy factory building, a crane girder system, a space truss and a roof purlin, the weight of steel computed by the new edition and the old edition code have been compared.

The existing portal framed sign structures are not refined-design,with lubber components and large quantity of steel in most of them,and the desired steel quantity of the light structure is much less than the traditional structure under the condition of insuring safety and esthetic.

Reasonable form of water seal layout can effectively improve the distribution of the internal force of the bulb tubular power station,thereby can reduce the amount of reinforcements and save the investment of the project.