PART XI SCAFFOLDS, STAGES AND WORK PLATFORMS — Scaffold stability
160
(1) A scaffold shall be erected with vertical members plumb and ledgers and bearers level.
160(2)
The lower end of the vertical support of a scaffold shall be supported by firm and adequately sized foundations or sills.
160(3)
The poles, legs and uprights of a scaffold shall be securely and rigidly braced to prevent swaying and displacement.
160(4)
A scaffold shall be effectively guyed or secured to a building or structure where the height of the scaffold exceeds 3 times its minimum base.
160(5)
Where building ties or guys are used
160(a)
the first level of ties or guys shall be placed at a height not exceeding 3 times the scaffold minimum base dimension, and additional building ties or guys placed at vertical intervals not exceeding 6 metres; and
160(b)
the ties or guys shall be placed at horizontal intervals of every third bay or 6.4 metres, whichever is the lesser, and at the ends of the scaffold.
160(6)
A building tie shall be capable of resisting a working load of 4 kilonewtons, applied horizontally and perpendicular to the structure, or a proportionately equivalent load where ties are spaced closer together or guying is employed.
160(7)
Where a scaffold is enclosed by a tarp or other cover, bracing for the scaffold shall be installed in accordance with the manufacturer's instructions or those of a professional engineer to meet design criteria for induced loads.
Not legal advice. Verify the cited article against the signed agreement.