Floors
A composite concrete slab (i.e. Bondek) suspended on steel or concrete columns looks ideal. It provides us with Excellent spanning capacities for carpark space under, good thermal mass value and excellent fire rating of up to 4 hours.
follow the link below for more information on Bondek
http://www.bluescopesteel.com.au/index.cfm/objectID.D85CCD4B-0558-11D4-89F000C04FCF6B8F
External Walls
exploring fire rated wall systems I came across IntRwall System by Boral. They are making a lot of promises with their product, such as
• A simple, cost-effective, panelised lightweight system that
can easily be installed by a plastering contractor.
• The readily available components are easy to handle and
install and don’t require heavy lifting.
• Simple assembly means faster construction and easier
inspection of acoustic and fire sealing.
• The plastering contractor installs all components
promoting
better coordination of site work.
• Services can be easily incorporated in the wall cavities.
• The system has a narrow footprint allowing an increased
usable area.
• Acoustic ratings up to Rw = 63dB, meeting and exceeding
BCA requirements.
• Fire ratings up to FRL -/120/120, meeting and exceeding
BCA requirements.
• If required, the stud centres can be reduced so that the system
can be used in areas subject to higher than normal pressures.
• Single layer of Shaftliner™ can be used to achieve FRL -/60/60.
• IBS rod in top track not required for FRL -/60/60 systems.
the assembly most attractive is the one below. note where i have marked:
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