Ventilation Solution

SPA's team of engineers produced a design, which allowed ventilation of the royal mail tunnels where CSJV and subcontractor Joseph Gallagher were digging timber headings.

Due to logistical reasons and fresh air requirements, the fans were located on the first floor, which meant running the ducting system down a number of floors using the Royal Mail post chutes (a narrow spiral chute with awkward access for ducting), which were originally used for transporting large quantities of letters.

SPA were able to design and calculate a system for running ducts of various lengths and specifications and provided the equipment needed to the job, such as a Super-silenced fan and de-duster for the initial shaft work (which helped to control noise and dust) and ducting.