Dragons for Kew Gardens Pagoda
In August 2016 Constructive Evaluation Limited were instructed by Hockley and Dawson on behalf of their client, Historic Royal Palaces, to undertake a testing regime to the proposed Polyamide material to be used for the replacement of 72 dragons that perch on the tiered roof structure of the restored Great Pagoda in Kew Gardens. These were commissioned in order to drastically reduce the potential loading problems incurred by using wood carvings throughout.
A bespoke series of tests were devised by Constructive Evaluation to determine whether any structural deformation of the material had occurred during the production process, and also to verify the acceptance of the material for final paint finishes.
Later, during construction of the actual 3D printed dragons a sample body, minus head and wings, was required to be tested for wind loading to eliminate any risk of the tail becoming detached from the body once in situ. Due to the initial deflections noted further adjustments were undertaken prior to the dragons’ final construction to meet with the required standards.