Document ID: chunk:federal_register_of_legislation:F2021L01868:reg:6:p74
Version: federal_register_of_legislation:F2021L01868
Segment Type: reg
Provision Reference: reg 6 (pt 74/86)
Character Range: 251181–256327

at Old Parliament House is recommended.   Allowing a contractor who has not undertaken appropriate heritage awareness training to work in Old Parliament House.
Monitoring of contractor activity by a trained member of staff.                        Contractors are not permitted to move heritage furniture unless supervised by a trained staff member.

       12.4.9.  Conservation research

  Opportunities: To better understand the heritage fabric and therefore better know and conserve the heritage values of the place.

  Risks: The irreversible destruction of heritage fabric and diminishing of heritage values.

    1. Non-destructive techniques

  Non-destructive investigative techniques are all permitted actions if heritage fabric is protected from tools/equipment and people movement during the inspections.

TECHNIQUE           DESCRIPTION                                                                                                                                                                                  APPLICATIONS                                                                                                                                                                  ADVANTAGES                                                                        DISADVANTAGES
Visual inspection   Looking for visual clues about the physical nature or condition of heritage fabric.                                                                                                          All heritage fabric surfaces.                                                                                                                                                 Quick; cost effective; may be reasonably carried out by an informed individual.   Best with an experienced person; may miss subtle or hidden clues, requires concentrated focus.
Surface mapping     Investigating sub- surface details using a high- powered, portable light at an angle to the flat surface.                                                                                    examining surfaces in dark spaces. Can reveal detail of former attachments, repairs or alterations. Can help to verify need for further investigation.                        Quick; cost effective; may be reasonably carried out by an informed individual.   Best with an experienced person; requires concentrated focus; may require access equipment.
Thermography        A rapid, remote technique to measure and record minute variations in the infra-red radiation which is emitted by all structures and can provide extensive information on the structure and   Locating and defining heat loss and moisture levels; locating structural timber, joints and in-filled openings; identifying bond failure and moisture ingress in render and   Quick; usually no special access required.                                        equipment required.
                                                                                                                                                                                                                 plasterwork, locating lintels,

TECHNIQUE              DESCRIPTION                                                                                                           APPLICATIONS                                                                                                                                                                                                                                                                                                                                    ADVANTAGES                                                                                                                                                      DISADVANTAGES
                       condition behind the surface.                                                                                         structural failures, snapped headers in brickwork.
Impulse radar          Powerful and versatile technique that allows the internal assessment of a wide variety of materials.                  Identifying size, nature and disposition of structural components; location and condition of metallic inclusions(clamps, dowels, reinforcements); locating flues, chases in walls; locating voiding in materials; condition of mortar joints; micro- cracking; bulk moisture content; locating services and leaks.                              Cost-effective solution to specific engineering problems; can be used on timber, stone, brick, concrete and ground strata; minimal disruption to environment.   Relatively expensive; interpretation of data is very complex and high level of expertise is required.
Ultrasonics            Technique that is often employed in medical or industrial fields but has applications in examining heritage fabric.   Locating decay, fractures and structural weakness in timber; assessing extent of decay on the surface of timber; checking fault planes and zones of weakness in stone; establishing depth of surface cracks, weathering decay or fire damage; verifying the effectiveness of consolidation