MAST Russian patent published in 2012 - IPC E04H12/08 

FIELD: construction.

SUBSTANCE: mast comprises at least two following serially joined sections with attachable plates and having cross section in the form of a rectangle - the upper section in the form of a rectangular parallelepiped and the lower section in the form of a rectangular truncated pyramid, a support site installed on the top of the upper section, a staircase fixed inside the section cavities to provide for the possibility to climb up to the support site, at least one recreation site installed inside section cavities, shoes fixed on a larger base of the lower section for installation of a mast on the foundation, at the same time each section is arranged from four connected trusses forming faces of sections, each truss is arranged in the form of longitudinal side elements, representing steel angles, which are fixed in a non-detachable manner to each other with an intermediate set of structural elements, besides, one shelf of each angle is aligned in the direction parallel to the truss plane, and the second one - in the direction perpendicular to the truss plane, trusses are connected with coupling of a pair of longitudinal side elements to form a composite profile in the form of a rectangular pipe using two groups of mutually perpendicularly aligned bolt connections, installed in holes coaxial for each bolt joint in parallel shelves of coupled angles, at the same time for each bolt joint in the area of its location on the shelf with a hole of each of coupled angles a rigid stop is arranged at the inner side along the shelf edge, contacting with the inner surface of the edge of the bolt joint parallel axis in the coupled shelf of the adjacent angle.

EFFECT: higher bearing capacity of a mast due to exclusion of possibility of strength losses by stand sections.

11 cl, 14 dwg