Features of the work of flat large-span structures

Objective . The purpose of the study is to prove features operation largespan flat structures, which are also taken into account in their design. Method. A technique presented that makes it possible reduce span bending moments. Examples rational design beam trusses given. Result. given structural diagrams, as well analysis work, allow designing large-span systems form frame and arch have high reliability, minimal weight, manufacturability manufacturing, transportation installation. Conclusion. schemes, sections junctions elements used practice construction. Rational solutions make own weight frames arches due optimal choice schemes.