Тhe article provides a detailed analysis of the work under load structures of clamp scaffolding and systematizes the features of taking into account loads and impacts when performing strength calculations. The article analyzes the stress-strain state of free-standing forests. An algorithm for calculating free-standing forests is proposed, taking into account the features of structural schemes of blocks that are not specified in the normative literature. Based on the results of the analysis of data from a series of numerical experiments, constructive measures are proposed to ensure the load-bearing capacity, rigidity and stability against overturning of spatial blocks of free-standing forests, which will allow installing blocks with a height-to-size ratio exceeding 3,5:1 in open areas (outside buildings and structures) without attachment to existing structures.

Keywords: steel scaffolding, yoke scaffolding, stress-strain state, structural solutions, stability, load-bearing capacity, nonlinear calculation, spatial free-standing block, dismounting, off-center coupling of elements

The article considers the calculation of the node of the frame of a multi-storey building. A comparative analysis of the work of potentially used materials is performed. The optimal cross sections of I-beam elements used in the node are selected.

Keywords: node, frame, multi-storey building, I-beam, calculation, method of limit States, calculated resistance, load, cross-section, material

The article describes the work of the lattice of the tower on the example of the support of cellular communication. The analysis of the distribution of internal forces in the elements of the lattice tower support, depending on the type of connecting grid, taking into account the direction of the wind load on the face or edge structures.

Keywords: cellular tower, steel tower, lattice tower, lattice, belt, brace, wind load, internal force, stress-strain state, stress