| 摘要 |
A tower assembly comprises a first pair of spaced uprights (1) defining a front end of the tower, a second pair of spaced uprights (2) defining the rear end of the tower and a plurality of braces (3, 4, 5) extending between the uprights. At least one ladder section (61) is movably mounted between the first pair of spaced uprights (1) between an upright closed operational position and an open position in which it affords personnel access through the uprights (1) to the interior of the tower. <IMAGE> |
