Bearings/ and Temperature and Wind Effects/Temporary Conditions.

Bracing can be built in Structures such as those on the Rope-Sway -- Anti-Resonant / Impulses coinciding with the Natural Frequency of the Roping Arrangement & Suspension System---1 : 1 Roping Arrangement, to give the Structures and Restraining devices to withstand horizontal Forces; these Loads and Vibrations are to be considered and are included in the Design Parameters of the Structure's ability to resist the Loads, Temporary bracings must work under the specified Design Criteria. When installing temporary bracings / permanent bracings the Assemblies must be easily dismantled in order to take out temporary Components or Members.

One must recognise the "Plumb-ness" [Straightness of the Suspended Roping Arrangement] it must be noted that as on Blackpool Tower the Well/Shaft Rise is open to the Elements. Conventional Signals/Levelling/Safety Devices associated with the Electrical Safety Chain--were Radio-Controlled [by Sound/Generated/Electric/Impulses]. All fastenings must be regularly checked for tightness -- Torque Values in N-m were specified in the Design and Maintenance Procedures--Field Operating Instructions were evolved from the Criteria/Details mentioned above.

Problems can be compounded by the variability of the direction and speed of wind. Bracings Guy Ropes and Tension/Dumping Weights have to be considered as a method of changing FREQUENCIES of vibration and limiting the Movement of the Suspension Ropes/Appurtenances. The force of the wind affects the working conditions on the Platforms where the Geared/VVVF/ Mechanical Actuating devices. The height of the Rise [100 Metres] demanded that the temporary access areas feature Angle Returns at their Edges so as to prevent any objects falling from those temporary support Areas, as even if a small objects such as Fastenings fall 100 Metres into the Common Areas frequented by the Public, they "may" as Bullets.

John Irwin C. Eng. M. I. Mech. E. -- 22 Princess Court, Queensway, London W2 4RB.