There has been comprehensive analysis and investigation of the Hills Figs in the Laman Street Civic Precinct.

December 2006 - Review of the Root Plate Architecture of Hills Figs in Laman Street (12.3Mb pdf) - to inform Art Gallery redevelopment proposals

June 2007 - Wind loading in Laman Street (7.1MB) The report focuses on the effects the removal of the Art Gallery can have on the trees on Laman Street and the possible consequence of the wind load on the trees in Civic Park.

11 July 2007 - Investigation into stability of three Hill's Weeping Figs along Laman Street, Newcastle (1.1Mb pdf) - this applies to Hills Figs on the western end of Laman Street and one inside the Civic Precinct

7 August 2009 - Assessment of Hill's Weeping Figs in the Civic Cultural Precinct, Laman Street (2.3Mb pdf) - this brings all the previous case studies and detailed investigations into one report providing a useful life expectancy for all 14 trees

2 September 2009 - QTRA Fig Trees Risk Assessment of Fig Trees in Laman Street, Cooks Hill (608kb pdf) - The QTRA is a risk assessment methodology currently used by arborists to determine risk thresholds and provide tree management options. The outcome of this QTRA was 1/19.8, well below the accepted threshold of 1/10,000.

10 December 2009 - Peer review of Marsden Report by Integrated Vegetation Management (89kb) - This report was commissioned to provide a review of the findings of Dennis Marsden's asssesment of the Hills Fig trees.

11 December 2009 - Peer review of Marsden Report by Arboreport (86kb  pdf) - This report was commissioned to provide a review of the findings of Dennis Marsden's asssesment of the Hills Fig trees.

8 March 2010 - Social Impact Assessment Stage 1 - Hills Figs Trees, Laman Street, Newcastle (244kb pdf) - This report undertakes a literature survey to inform the benefits of trees to the community. It proposes for a Social Impact matrix which would be informed by the consultation process.

 9 March 2010 - Laman Street Hills Figs QTRA and Review (269kb pdf) - This QTRA was conducted following implementation of Council's risk abatement strategy for Laman Street. The outcome of this QTRA was 1/14,400. This is within an acceptable limit subject to the continued implementation of the risk management strategy.

9 March 2010 - Heritage Assessment and Recommendations (1.5Mb pdf) - The report is an assessment of heritage significance for the stand of fig trees in Laman Street between Darby and Dawson Streets.

12 March 2010 - Quantified Tree Risk Assessment (QTRA), Root Investigation Report and Memo (1.2Mb pdf) - A collation of the revised QTRA report taking into account the implementation of the risk abatement strategy, the root plate structure investigation using ground penetrating radar technology and trenching and social and heritage assessments.

16 March 2010 -Heritage Assessment and Recommendations (1.6Mb pdf) - This report is the final assessment of the heritage significance of the fig trees (amended 9 March version).

1 July 2010 - Quantified Tree Risk Assessment and Review (288 kb) - The revised Laman Street QTRA report of July 2010 was assessed based on information compiled by Councils asset management staff and compliance section. The information revealed that the road closure measures and parking restrictions were not effective and that cars were parking in the street and pedestrians were traversing across the closed off area. The QTRA as revised was 1 in 400 which equates to high risk. The acceptable minimum is 1 in 10,000.

9 July 2010 - Feasibility Study - Tree Restraint (183 kb) - The THS report is in relation to the feasibility of using physical structures to restrain the trees in the event of a failure. The author was keen to find a solution however when calculations were completed it became evident that this was not feasible. The determination took into account the cost, size of structures required and the logistics of installation that would require large drilling equipment.

12 August 2010 – Trenching Investigation of Hills Fig (927kb) – a report on the implications of Hunter Water pipe repairs that severed a 110mm diameter root on the southeast side of tree 12025 adjacent to the Library entrance.

13 September 2010 - Fauna Habitat Assessment - An assessment of the habitat values of the Hills Fig trees in Laman Street and an assessment of the impacts of their removal on native fauna.

11 November 2010 - Court Judgement on Parks and Playgrounds Movement Inc's application to stop the removal of the fig trees from Laman Street. Read a short synopsis of the court findings.

December 2010 - Report on the feasibility of a pull test on the Laman Street trees (333 kb) Prepared by Total Height Safety Pty Ltd.

July 2011 - Memo to Councillors on Laman Street Risk Identification and Management (90kb pdf) - A summary of Council's approach to risk management of the Laman Street trees.

July 2011 - Branch Failure in Laman Street (30kb) - A memo dated 15 July 2011 of recent branch failures in Laman Street.

August 2011 - Questions and Answers and Laman Street Figs (44kb pdf)

September 2011 - Fauna Habitat Survey (497kb) of Laman Street by Forest Fauna Survey

November 2011 - Response to Engineers Australia briefing (48kb) On 19 July 2011, two engineers from Engineers Australia provided a presentation to Council regarding the risk analysis for the Laman Street figs.