Situated between the city centre and the waterfront, this is a prime location for new homes by housebuilder Miller Homes and the completed development will comprise five blocks of 209 newbuild apartments with a converted "B" listed building at its heart.

Edinburgh architect practice Comprehensive Design Associates is the masterplanner on the project and has opted for masonry build in a simple architectural style for the new blocks, with white rendered walls and horizontal parapet roof edges.

However, timber was chosen for the roof solution. "The building required large, flat roofs, with ‘firing pieces’ which created a slope in the roof; this gave the ‘gull-wing’ effect which the architectural design required," said James Jones business development manager Mark Tilston.

"The spans involved were quite significant, up to 9m in places, and this project showcases the span capability, and also the general design flexibility of the JJI-Joist."

Valued at £40,000, the roof scheme for the current phase is for four blocks; A, B, C1 & D, with over 6,000 linear meters of 350C and 350D JJI-Joists used in the project.

Pasquill has been involved with the project design since September 2011 and its JJI-Joist designer, Paul Thomson, has been responsible for the detailed roof design. He has also been the main client contact throughout the project.

"The job was very interesting, especially with the overall gull-wing appearance of the roof. Having us as a local point of contact enabled the project to run smoothly, and helped with the site support as required," he said.

Mr Thomson also highlighted the value of using the James Jones & Sons FloorMaster design software, which enabled the wall drawings from engineer Scott Bennett Associates to be easily imported and incorporated into the detailed roof design.

The project is progressing well and is on schedule, with the first occupants expected in March.