be constructed with due regard to its stability and, if necessary, adequately weighted at the base;

be used only on a firm and even surface; and

be provided with a positive locking device on each caster to hold the scaffold in position.

the employer of any person who uses or is to use any tower scaffold in a workplace; or

the principal under whose direction any person uses or is to use any tower scaffold in a workplace,

the employer of any person who uses or is to use any tower scaffold in a workplace; or

the principal under whose direction any person uses or is to use any tower scaffold in a workplace,

no tower scaffold is moved except by applying force at or near the base;

the casters are locked to hold the tower scaffold in position while the person is on the tower scaffold; and

no person remains on the tower scaffold when it is being moved.

have outriggers of adequate length and cross section; and

be constructed in accordance with the design and drawings of a professional engineer.

pass through the wall;

be of adequate strength; and

be securely fastened on the other side of the wall.

the scaffold (including the cantilever or jib support) has been examined by the professional engineer after its erection or installation, and a certificate stating that the scaffold is safe for use has been obtained from the professional engineer;

the design and drawings certified by the professional engineer and the certificate referred to in sub-paragraph (a) are kept available at the workplace for inspection by an inspector; and

the scaffold has been inspected by a professional engineer at least once every 3 months to ensure that it is safe for use.

constructed before being hung into position on a building, ship or other structure;

securely anchored to the hull or any other part of the building, ship or structure to prevent lateral movement or sway;

constructed so that the work platform is in a horizontal plane; and

provided with safe means of access to and egress from its platform by means of stairs or ladders.

shall be placed in such a manner as to prevent any person from falling; and

shall not rise to a vertical distance of more than 3 metres between landings.

take, so far as is reasonably practicable, such measures to ensure that his design can be executed safely by any person who constructs, installs or uses the hanging scaffold according to his design; and

provide to any person who constructs or installs or to construct or install the hanging scaffold, all design documentation (including all relevant calculations, drawings and construction procedures) as is necessary to facilitate the proper construction or installation of the hanging scaffold according to his design.

be constructed with more than 3 tiers; or

have a work platform more than 4.5 metres above the ground or floor or other surfaces upon which the scaffold is erected.

take, so far as is reasonably practicable, such measures to ensure that his design can be executed safely by any person who constructs or uses the trestle scaffold according to his design; and

provide to any person who constructs or is to construct the trestle scaffold, all design documentation (including all relevant calculations, drawings and construction procedures) as is necessary to facilitate the proper construction of the trestle scaffold according to his design.

the width of the platform is such as to leave sufficient clear space for the transport of materials; and

the trestles or uprights are firmly attached to the platform and adequately braced to prevent displacement.