Webinar: Fundamentals of PT Slab-on-Ground Design - Structural-Webinar: Fundamentals of PT Slab-on-Ground Design

Video Transcription

Video Summary

In the Post-Tensioning Institute's December webinar, moderated by Kyle Boyd, Tony Childress, an industry expert, discussed design and analysis of shallow post-tension concrete foundations on expansive and stable soils. The webinar forms part of a two-part series, with the first focusing on the geotechnical side, and this session delving deeper into the structural aspects. Childress emphasized the importance of understanding different types of foundations, particularly PTI types 1, 2, and 3, which vary based on soil stability and load accommodation. Key concepts such as shape factors, minimum slab thickness, and considerations like climate differences impacting design were explored. Childress also shared insights on post-tensioning techniques, addressing issues such as bending and shear stresses, and the impact of different structural loads. The session concluded with practical advice on selecting between uniform and ribbed slabs, factoring in costs and regional practices. The audience engaged actively, with questions focused on technical specifics, commercial applications, and design considerations, reflecting high interest in the subject. Future webinars will continue to explore similar themes, including vehicle weight impacts and evaluations of existing structures.

Keywords

post-tensioning

concrete foundations

expansive soils

structural design

PTI types

bending stresses

shear stresses

slab thickness

geotechnical