Abstract: A method for providing a tubular node in framework truss structures, such as offshore platforms for oil drilling and production activities of the type consisting of interconnected legs and braces of steel tube elements. For formation of the transition between leg and brace in the node is utilized a blank of rolled plate steel, which is given the desired curved shape corresponding to the curvature of the leg. The blank is pressed or extruded in a suitable press tool formed with an outwardly extending brace stub at the desired angle, which brace stub is designed for welding to a complementary brace tubing in the framework. Thereafter, the blank with the brace stub is welded into the leg proper and constitutes a wall segment of the leg in the node.

Abstract: Method of constructing an offshore truss work type tower structure, and a tower structure comprising outer legs and leg connecting trusses, where all legs being parallel, trusses between outer legs and trusses arranged inwardly from outer legs, being diagonally arranged, one or more internal leg or legs being arranged in equidistant adjacent outer legs, all trusses from and between outer legs being arranged diagonally and secured to the legs by welding to forged nodal points whereby each nodal point on an outer leg being arranged at a level intermediate two nodal point levels on adjacent legs.