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PTISLAB 3.5PTISlab 3.5 is the latest upgrade to the PTISlab series of programs which rapidly became the de facto standard programs for designing foundations on expansive and compressible soils. PTISlab can be used to design or analyze both post-tensioned and conventionally reinforced slabs-on-ground for single and multi-family residential and commercial foundations on expansive and compressible soils. The expansive soil analysis of PTISlab 3.5 has been upgraded to take into account the changes incorporated in the Post-Tensioning Institute’s (PTI’s) DC10.5-12 publication: Standard Requirements for Design and Analysis of Shallow Post-Tensioned Concrete Foundations on Expansive Soils. PTISlab 3.2 is based on the Post Tensioning Institute’s Design of Post-Tensioned Slabs-On-Ground, 3rd Edition Manual and corresponding Standards and includes the changes in Addendum 1 and 2.
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VOLFLO 1.5Using unsaturated soil mechanics theory, VOLFLO 1.5 was developed to calculate the shrink and swell capabilities of clay soils. VOLFLO 1.5 can be used to determine the Edge Moisture Variation Distance (Em) and the Differential Soil Movement (Ym) required by the Post-Tensioning Institute’s Design of Post-Tensioned Slabs-On-Ground, 3rd Edition Manual.
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