The site has yet to be released by the Health & Safety Executive, but police and fire service investigations into the cause ruled out arson either deliberately or by recklessness. The exact cause will not be divulged until the HSE has concluded its own investigation.
Fire officials have said all timbers were properly treated and timber industry sources said no-one had called into question its safeguards.
Calls by a local councillor on the Nottinghamshire Fire and Rescue Authority for the university to consider other building materials appear not to have been welcomed.
A university spokesperson said plans had yet to be revealed, but the university remained committed to the project, the Carbon Neutral Laboratory for Sustainable Chemistry.
Soon after the fire the HSE published an open letter, in association with the STA, to all parties in the design, procurement and construction of timber frame structures reiterating guidance to combat on-site fire risks.
Andrew Carpenter, chief executive of the Structural Timber Association, said: “We have had very little contact since the first few days from any of the official bodies which indicates to me that the SiteSafe procedures were carried out satisfactorily and that we are seen as part of the solution and not the problem.”
The building, part funded by GlaxoSmithKline, was planned as a blueprint for eco-friendly design. It had been constructed with glulam beams and columns with cross-laminated timber walls, floors and roof. The timber element was handled by B&K Structures under main contractor Morgan Sindall. Morgan Sindall issued a profits warning last month on the back of delays in this and other projects.
