A phased 2-storey extension to Building R80, to provide a new IMAT external beamline facility used as a neutron imaging and diffraction instrument for material science, materials processing and engineering by ISIS research.

Phase 1: The design and construction of a 415sqm 2-storey extension to Building R80 to serve as an experiment building housing the IMAT experimental equipment and plant with an attached pump enclosure and covered way creating a new entrance lobby to R80.

The construction is a structural steel frame, clad with insulated steel cladding panels externally with self-finish inner lining; metal roof decking, insulation and single layer sheet roof covering generally and profiled metal roof decking to pitched roof to attached store; internal finishes consisted of painted structures and sealed concrete floors to inhibit dust contamination.

The building is fully M&E serviced with AHU's, new pumpset and pipework from boiler plant room, BMS controls and a two hook 10 tonne/2 tonne crane; electrical installation included sub-mains distribution, supplies to mechanical plant, small power and lighting, emergency lighting, data/communications, public address, fire alarm installation, lightning protection and card swipe access system.

The design provided for the interface with the existing accommodation at ground and first floor levels, reinstatement of existing finishes and services in the existing facilities.

External works included the reinstatement of hard-surfacing, coordinating the diversion of external services including mains water and drainage including the provision of new soakaway.

Phase 2: The design and installation of a mezzanine flooring system complete with access staircases and the design and construction of a User Office and Counting House complete with small power and lighting. The Phase 2 works couldn’tbe commenced until the Completion of the installation of IMAT plant and equipment by others.

• Working within tight building level tolerances due to accuracy required by IMAT equipment
• Full overhead gantry crane coverage
• Roller shutter door access from service yard to allow full forklift and vehicle access to experimental area
• Ground level mounted AHU equipment for ease of maintenance and future upgrading
• Interfacing and integrating with existing Building R80 which remained operation during works
• Phased construction programme to allow IMAT equipment to be supplied and installed by others