Concrete Systems
Configuring a concrete building
with emphasis upon gravity-only
systems
Concrete Floor Systems
• Many factors to consider such as
• Live load to be supported
• Span requirements and need for
column free areas
• Anticipating penetrations
• Exposed soffit?
• Fire rating requirements
• Special client requirements
– e.g. Minimum deflection
• Price and availability
• Structural depth available
Rib and timber infill
Single and Double Tee
Preliminary sizing of
slabs and beams
Concrete Columns
Columns should be at least as wide
as the beams
250 mm sq for ease of concreting
250 sq up to and including 2 storeys
400 sq 3 to 5 storeys
600 sq 5 to 12 storeys
800 sq for 12 to 20 storeys
These dimensions apply only to
elements loaded only with gravity
loads
Seismic Resisting
Structural Frames and
Walls
Use
Resist!