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Responsive Tendon Patterns - PT Optimization
Winner - Platinum
Competition: Spark:Concept Pro
Designer: Mark Sarkisian - Partner
Design Type: Structural Engineering/
Company / Organization / School: Skidmore Owings & Merrill
Team Members: Mark Sarkisian, Eric Long, David Shook & Ricardo Henoch
Post-tensioned (PT) flat-plate gravity framing systems are highly efficient and reduce embodied carbon when compared to conventional reinforced concrete framing systems. PT flat-plate gravity framing systems are useful in reducing slab thickness, improving construction efficiency, and reducing seismic mass in many building applications. A novel approach to determining PT tendon arrangements has been applied to several buildings informed by topology optimization results. Topology optimization is a method that determines optimal load paths in a finite element continuum. By orienting PT tendons along optimal load paths -- suggested by topology optimization, it has been shown that 25% or more of PT quantities can be reduced while maintaining the same mild steel reinforcement.