Abstract: A series of alternative related methods for reinforcing an existing lattice frame steel structure, having substantially vertical Hollow Primary Elements, offering the option to choose between improving only compressive load-bearing capacity of said hollow primary elements, or improving both their compressive and the tensile load-bearing capacities. The compressive load-bearing capacity of said primary elements is increased by filling their internal cavities with non-shrink cement-based grout, in a slow and low-pressure procedure, hence ensuring the applicability of the present invention to practically any existing steel structure with hollow primary elements, regardless of their capacity to withstand internal pressure.

Abstract: A foundation for a tower of a telecommunication site or the like, which may serve a plurality of networks or users and requires therefore a plurality of equipment shelters, is basically formed of a plurality of prefabricated concrete equipment shelters coupled altogether so as to function as a monolithic foundation. When an increase of the foundation's overturning resistance capacity is required, an enhancement assembly of prefabricated foundation elements coupled altogether by similar means to those used for coupling said shelters, is placed under said basic assembly of shelters, and the two assemblies are mechanically vertically fastened to each other.

Abstract: A solution for a tower (10) that may be substantially tall, characterized by the appearance of a monopole, the capacity to support large objects and consequently sustain great lateral loads generated by wind or earthquake, the facility to conceal vertical access ladder and all other installations, such as antenna feeder cables, and the availability at an acceptable cost level. The heart of the invention is the basic concept of separation between the structurally functioning elements, which are kept concealed, and a non-structural shell (12) which provides the tower (10) the shape of a monopole.

Abstract: A foundation for a tower is formed of a plurality of prefabricated slabs coupled together so as to function as a monolithic foundation.

Abstract: A foundation for a tower is formed of a plurality of prefabricated slabs coupled together so as to function as a monolithic foundation.

Abstract: This invention relates to a connector for the elongated elements of a structural space frame, and to a space frame employing the connectors. The connector consists of a base element and up to two elongate connector members. The base element includes both first and second bores lying along first and second axes, and first and second pairs of parallel faces intersecting with the first and second axes respectively at right-angles. The first and second elongate connector members are housed within the first and second bores of the base element, and each connector member includes outwardly extending threaded portions at both ends, the threaded portions being parallel screw threads. The threaded portions respectively engage adjacent primary elongated frame elements, by means of tightening these elements in opposite axial directions against the base element. The first and second axes are arranged in substantially parallel planes, spaced apart by substantially the diameter of a single elongate connector member.