Expandable heavy equipment , comprising a frame with a first frame element , a connector , at least one elongated pull element , and further frame elements , the further frame elements comprising at least a second frame element , wherein the connector is arranged for connecting the first frame element and the second frame element , the pull element comprises a first coupler at a first end and a second coupler at a second end opposite of the first end , and is connected at the first end to the first frame element with the first coupler and at the second end to one of the further frame elements with the second coupler , a transport condition is defined wherein the first frame element and the second frame element are arranged compact together and a working condition is defined wherein the first frame element and the second frame element occupy more space in at least one direction than in the transport condition, the connector allows a movement of the first frame element and the second frame element with respect to each other from the transport condition to the working condition, the pull element is in a folded state in the transport condition and in an extended state in the working condition, and the pull element is designed to transfer a pull force in the working condition from the first frame element to the one of the further frame elements , characterised, in that the pull element comprises load bearing fibres extending from the first coupler to the second coupler , the pull element comprises at least one flexible part and at least two stiff parts , the flexible part having a lower bending stiffness than the two stiff parts and being arranged between the two stiff parts , and the flexible part enables the pull element to be arranged in the folded state. the connector is arranged for connecting the first frame element and the second frame element , the pull element comprises a first coupler at a first end and a second coupler at a second end opposite of the first end , and is connected at the first end to the first frame element with the first coupler and at the second end to one of the further frame elements with the second coupler , a transport condition is defined wherein the first frame element and the second frame element are arranged compact together and a working condition is defined wherein the first frame element and the second frame element occupy more space in at least one direction than in the transport condition, the connector allows a movement of the first frame element and the second frame element with respect to each other from the transport condition to the working condition, the pull element is in a folded state in the transport condition and in an extended state in the working condition, and the pull element is designed to transfer a pull force in the working condition from the first frame element to the one of the further frame elements , characterised, in that the pull element comprises load bearing fibres extending from the first coupler to the second coupler , the pull element comprises at least one flexible part and at least two stiff parts , the flexible part having a lower bending stiffness than the two stiff parts and being arranged between the two stiff parts , and the flexible part enables the pull element to be arranged in the folded state. <EOS>