Tripod for freely erecting DEHNiso-Combi support tubes (D50 length 3200 mm). For erecting with concrete bases using wedge technology, without additional fastening to construction elements. With adjustment to the roof pitch up to max. 10°. Foldable design, especially for the internally installed HVI conductor in the support tube. In order to maintain the bending radius of the HVI conductor at the bottom of the tripod, two concrete bases are positioned below the leg and one above.