Code of Practice for Safe Use and Operation of Suspended Working ...

5.3.8 Outriggers5.3.8.1 Where outriggers are used, the outriggers should be :(a)(b)of adequate length and strength and properly installed and supported;firmly anchored at the inner ends; and(c) securely fastened to any ballast or counterweights (regulation 5(2)of the SWPR).5.3.8.2 Outrigger should be properly constructed. It should not contain weldedjoint when it is in tension unless the joint is supplemented. Any weldedsteel joints should conform in all respects to BS 5135: 1984 or equivalent.5.3.8.3 Special attention should be given to ensure that the strength of the buildingor structure is adequate at places where the outrigger bears on the buildingor structure.5.3.8.4 Where roof hooks and parapet wall clamps are used to serve the purposeof outriggers (see Fig. 5) of a temporary suspended working platform,the following requirements should be followed:(a)there should be sufficient tie-backs anchored onto the roof beamsor internal columns of the building;(b) every tie-back should be of steel wire rope having a diameter notless than that of the suspension rope;(c)(d)(e)(f)(g)a turn-buckle or other similar device should be incorporated in everytie-back;every tie-back should at all times be kept taut;the roof hooks, parapet wall clamps and anchor points of tie-backshould not be used on non-reinforced structures such as masonryand brick wall;any packing used should be securely clamped; andsuitable stiffener should be used to prevent the open-up of theoutrigger leg.5.3.8.5 A rope guard or other means should be fitted at the outer end of theoutrigger to prevent the suspension rope and safety rope from slippingoff the outrigger.24