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Taiku System Technical Whitepaper: Post-Tensioned Wide Flat Beam Solution for Covered Underground Garage Roofs
Covered underground garage roofs face combined loads from soil cover, fire truck loads, and groundwater uplift. Flat slabs risk punching shear, while conventional beam-slab systems increase floor height. The Taiku system uses post-tensioned wide flat beams to save approximately 500 mm in floor height and excavation depth compared to beam-slab systems, and eliminates punching shear risks versus flat slabs.
View resource →Company UpdateWhy Flat Slabs Are Unsuitable for Buried Garage Roofs with Soil Cover
Flat slabs are widely used in standard underground garages, but for roof slabs with soil cover, the additional loads from soil weight, fire truck loading, and landscape surcharge significantly increase punching shear at column heads, raising the risk of sudden failure. This article explains the structural limitations of flat slabs in such scenarios and introduces the Taiku prestressed wide-shallow beam system, which eliminates punching shear risk while saving approximately 500 mm in floor height.
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