The 1982 work @-@ ins took place from 24 July to 1 August and 21 August to 29 August . The work planned included the completion of the brickwork at the top of the tower , installation of the Elm curb , a start on the construction of the new cap , installing machinery and making and fitting various doors and windows . The cap frame was constructed , incorporating two beams from the original cap frame that were fit to be reused . The cap frame was completed in autumn 1982 . It had been constructed upside down and a mobile crane was used to turn it over and place the windshaft into position .