Greyton was contracted by Downer Engineering and Baulderstone Haunibrook Bilfinger+Berger to carry out extensive passive fire rating to the Cross City Tunnel with a total contract value of $250,000. The contract consisted of over 600 services penetration seals, Promatect demountable fire and sound proof walls, Fendolite vermiculite spray to ducts and essential services, access panels and fire doors and fire rated bulk heads around essential services. Most of the fire barriers had to be designed for a minimum four hour fire resistant level. All work was completed to a high standard and strict programme set out by Downer and BHBB. Greyton can provided contacts for both companies if references for the above works are required. Please click the ‘tunnel specialist’ to see the photos of our works.