Mills Tour

MILLS TOUR R E G U L A T I O N S , S T A N D A R D S A N D R E C O M M E N D A T I O N S 24 Recommendations for assembly > I NSPECTION OFTHE EQUIPMENT Before starting to erect the scaffolding - Check that the scaffolding is in good condition - Do not use any components that are suspect (parts that are bent, squashed, loose, etc) - For towers, only use parts that are made by Mills. Do not use components made by different manufacturers. > E NSURE COLLECTIVE SAFETY When designing how the shoring and formwork will be assembled and dismantled, attention should be paid to collective protection. If it is not possible to ensure complete or partial collective protection, workers should have individual fall-arrest equipment. > R ECOMMENDATIONS When the shoring has been assembled, a formal acceptance report should be issued. > R EMOVING SHORING The support for the building structure should be removed by lowering the adjustable heads to avoid destabilising the towers. All the heads should be unscrewed together to prevent the load being taken by heads that have not yet been unscrewed. > F ORMWORK The formwork calculations should take account of load distribution. If a beam bears, for example, on 3 points, the load will not be distributed ac- cording to the simple geometric ar- rangement. > S TABILITY DURING ASSEMBLY The stability of the shoring must be checked while it is being assembled and dismantled and just before pou- ring, when the shoring acts as a sail and there is no concrete to act as ballast. > L OAD DISTRIBUTION - BEARING SURFACE Bearing on concrete slab In general, a tower does not require any particular preparation when it bears on a concrete slab. If the surface is uneven, wooden planks should be used between the base plates and the concrete. It may be necessary to provide shoring under the lower tiers if they are unable to take the vertical load. Bearing on earth On earth, the load must be distributed appropriately, depending on the nature of the ground and the load. Differential settlement The four base plates must bear on the same type of surface so that the settlement under each plate is identical. If this is not possible, for example, if two base plates bear on a concrete slab and two bear on earth, the load on the base plates on the earth must be spread to minimise settlement.