A purpose-built specialist day-support facility in the Shetland Isles, for adults with complex needs, featured Pasquill’s pre-assembled trusses and large span Posi-Joists for the mono pitched roof of the new 1770m2 Eric Gray Centre in Lerwick.
On the design side, 10.1m Posi-Joists were required to accommodate both a roof and room load, with wall partition point loads along their lengths, so that a ‘plenum’ room could be built on top. In addition, all trusses had to be designed with the ability to support hoists for lifting disabled adults.
The project’s trusses were all pre-assembled prior to delivery to make installation on site as easy as possible. Split into five loads, the trusses and Posi-Joists were manufactured at Inverness, delivered to Aberdeen and ferried to the Shetland Isles.
Commenting on the scheme, DITT (Shetland contractors) project engineer, Karl Bolt, said: “We found dealing with Pasquill to be very straightforward and were impressed by their use of 3D modelling for their trusses. This allowed us to plan the truss erection in detail and spot any potential issues before the trusses had even been manufactured. This was particularly helpful around all of the openings where rooflights were going to be placed and to plan the Posi-Joist construction sequence.”
