A crane having an upper works rotatably mounted on a lower works, the crane including at least one column member, the column member comprising: a) at least a first and a second column segment (53, 54) each with a longitudinal axis and a first and a second end, the second end of the first segment being coupled to the first end of the second segment; b) at least a first, a third and a fifth connector on the second end of the first segment respectively mating with at least a second, a fourth and a sixth connector on the first end of the second segment; c) each of the connectors (70, 80) comprising at least a first extension (71a, 81a) having a through-hole there through, the through-hole having an axis perpendicular to said longitudinal axis and positioned in the extension (71a, 81a) such that the through-holes of mating connectors (70, 80) are aligned when the column segments (53, 54) are aligned; d) each of the connectors (70, 80) comprising a compressive load bearing surface (78, 88), the compressive load bearing surfaces (78, 88) being positioned to carry compressive loads between the first and second column segments (53, 54) when the column segments (53, 54) are aligned; e) a first pin through the through-hole of the first extension on the first connector and the through-hole of the first extension (81 a) on the second connector to hold the first and second connectors (70, 80) together in a first coupling; and a second pin through the through-hole of the first extension (71 a) on the third connector and the through-hole of the first extension (81 a) on the fourth connector on the first end of the second segment to hold the third and fourth connectors (70, 80) together in a second coupling, characterized in that the first coupling provides a tight fit and the second coupling provides, compared to the tight fit, a loose fit, wherein inside diameters of all holes through which the first pin passes are the same as one another, and the inside diameters of all holes through which the second pin passes are the same as one another; and wherein X equals the ratio of: i) the difference between the inside diameter of the through-holes of the first and second connectors and the outside diameter of the first pin to ii) the outside diameter of the first pin; wherein Y equals the ratio of: i) the difference between the inside diameter of the through-holes of the first and second connectors and the outside diameter of the second pin to ii) the outside diameter of the second pin; and wherein the difference between X and Y is greater than 0.003, X is less than 0.0055 and Y is greater than 0.0065. a) at least a first and a second column segment (53, 54) each with a longitudinal axis and a first and a second end, the second end of the first segment being coupled to the first end of the second segment; b) at least a first, a third and a fifth connector on the second end of the first segment respectively mating with at least a second, a fourth and a sixth connector on the first end of the second segment; c) each of the connectors (70, 80) comprising at least a first extension (71a, 81a) having a through-hole there through, the through-hole having an axis perpendicular to said longitudinal axis and positioned in the extension (71a, 81a) such that the through-holes of mating connectors (70, 80) are aligned when the column segments (53, 54) are aligned; d) each of the connectors (70, 80) comprising a compressive load bearing surface (78, 88), the compressive load bearing surfaces (78, 88) being positioned to carry compressive loads between the first and second column segments (53, 54) when the column segments (53, 54) are aligned; e) a first pin through the through-hole of the first extension on the first connector and the through-hole of the first extension (81 a) on the second connector to hold the first and second connectors (70, 80) together in a first coupling; and a second pin through the through-hole of the first extension (71 a) on the third connector and the through-hole of the first extension (81 a) on the fourth connector on the first end of the second segment to hold the third and fourth connectors (70, 80) together in a second coupling, characterized in that the first coupling provides a tight fit and the second coupling provides, compared to the tight fit, a loose fit, wherein inside diameters of all holes through which the first pin passes are the same as one another, and the inside diameters of all holes through which the second pin passes are the same as one another; and wherein X equals the ratio of: i) the difference between the inside diameter of the through-holes of the first and second connectors and the outside diameter of the first pin to ii) the outside diameter of the first pin; wherein Y equals the ratio of: i) the difference between the inside diameter of the through-holes of the first and second connectors and the outside diameter of the second pin to ii) the outside diameter of the second pin; and wherein the difference between X and Y is greater than 0.003, X is less than 0.0055 and Y is greater than 0.0065.