Document ID: chunk:federal_register_of_legislation:F2016L00409:body:0:p32
Version: federal_register_of_legislation:F2016L00409
Segment Type: other
Provision Reference: 
Character Range: 81634–84685

photographs to obtain information on anchorage details, the construction sequencing, and any other measures may affect moisture access.
The condition of the concrete and tendons should be considered before and during demolition,
for example by:
    * conducting a visual inspection to confirm loads, obvious deviations from the original design and waterproofing details
    * assessing conditions throughout the building, as well as utilising selective testing
      in representative areas to assess any weakening or breakage of tendons
    * measuring humidity within tendon sheathing and analysing any sheathing contaminants
    * removing, inspecting and testing a small number of tendons to assess their condition, and
    * continuing to monitor tendon tension.
Suitable control measures should be implemented, for example using steel plates or other restraint measures, at locations adjacent to pedestrian areas or where concrete cover is reduced. This will help to minimise the risk of personal injury or property damage arising from the unexpected release of stored energy in tendons.

6.2 Fire-damaged, ruinous and structurally unsound buildings or structures
An assessment should be undertaken to identify asbestos, hazardous materials and structural integrity issues relating to fire-damaged, ruinous or structurally unsound buildings or structures. The person conducting a business or undertaking should request a written report by a competent person specifying the hazards associated with the design and the current state of the structure.
Control measures should be taken, as far as is reasonably practicable, during the assessment
and demolition stages.
In specifying the hazards associated with the design and current state of the structure,
the report by the competent person should also specify the control measures that should
be applied to the demolition.
Where possible, fire damaged, ruinous or structurally unsound buildings or structures should
be demolished by mechanical means.

6.3 Lift shafts
The combination of the lift shaft structure and the lift plant (including the lift cage or car, winders, counterweights, electrical supply and controls) can make these complex structures. Different methods can be applied to the demolition of lifts and these will depend on the circumstances
of the particular site.
In general, demolition procedures should include the following:
    * temporary support of the lift cage and the disconnection of electric power to all areas
      of the lift machinery
    * lowering of any counterweights to an appropriate level for disconnection and the
      unwinding of cables in a controlled manner prior to the removal of drums
    * provision of temporary decking in the lift shaft, and
    * progressive demolition of the lift shaft walls onto existing floors and the removal
      of any debris.

6.4 Basements, cellars, vaults, domes and arched roofs
During the demolition of a basement, cellar, arch, vault or dome frequent inspections should
be made to identify whether there has been