What is the best software available today to use for post-tensioning, particularly as it relates to checking existing post-tensioned beams with unbonded tendons and bonded rebar? We want to determine the utilization ratio (Factored Moment / Resisting moment) when tendons break due (due to corrosion). We are checking to the Canadian CSA A23.3 Standard. We have been using ADAPT PT but are looking to see what else is out there, and how people have found it. Some software that I have heard about is 'SAFE' but the post-tensioning module is relatively expensive, (and I am not sure that it gives the utilization ratio) and RAM CONCEPT and perhaps SAFE has a p.t. I am looking for something that is bug-free, or that if we find a bug the software marketer will not require us to pay for the next edition of the software in order to get the bug fixed. RE: Post-Tensioning Software (Structural) 25 May 17 00:20.
Rapt Ram ConcePT Safe Adapt Posten X (may be US only) Concise beam (simple spans) In most cases, I suspect that you're utilization ratio may be something that you have to massage into being yourself based on the output of the software. Ultimate moment capacity of PT systems isn't all that difficult to calculate by hand really.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it. RE: Post-Tensioning Software (Structural) 25 May 17 07:27.
Official realease of RAPT version 6.5.18.0 available for download from downloads page. Column Design program now included in the latest release. The cracks that are being released to the public are a proof of concept for a specific version and they don’t normally re-crack it again when a new version of the program is released. Knowing how to crack a program using an available ready made patch, keygenerator or cracked files does not earn yourself the title “software cracker”.
What is the best software available today to use for post-tensioning, particularly as it relates to checking existing post-tensioned beams with unbonded tendons and bonded rebar? 'Best' will be a bit subjective, so take the following as 'my opinion' only. I use RAPT, and have for over 20 years. I have also used ADAPT 2D and CONCEPT (FEM 3D when it was by the original author/s), and in-house software from a multi-national PT company too. The majority of PT work I do these days is related to existing UNbonded PT structures to ACI 318 where we check the as-designed/as-built condition and from that base-model then run several 'what-if' cases considering corroded/severed tendons.
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Then during actual field investigations (invasive probes, lift-off testing, etc) we adjust/tweek the PT to reflect the current (or projected future) level of non-corroded/non-severed tendons. It appears my application is similar to yours. For this type of application, the software cannot be a black-box design tool - you want full user-control, in my opinion - coupled with an experienced PT engineer. The software needs to allow the user to input the actual number of tendons, the actual CJ locations for intermediate stressing, the dead-ends, the live-ends, the drape high and low points, harped or parabolic profiles etc. It should enable you to accurately model RC pour strips, setdowns, step-ups etc. Additionally, the software should allow the user to be able to input USER-defined rebar with bar diameter, quantity and length, so upon running the software it uses this defined rebar when it is checking initial strength, stresses, cracked section analysis etc.
However, similar to what KootK was suggesting, most design software will 'add' rebar to meet any strength deficiencies, so the software will provide 'design' capacities so your 'utilization' (C/D) factor is >=1. The software should be calculating flexural capacities, for example, BEFORE and AFTER it adds rebar over the USER-defined rebar, so that makes checking the C/D ratios easier, and I usually just use a spreadsheet to check C/D ratios for different runs, based upon the capacities from the software.
Often with older PT structures with corroded tendons there are also other defects, like excessive flexural cracking and deflections. The software should also be capable of undertaking cracked-section analysis, and allow user-defined creep and shrinkage data to estimate long-term deflections. RAPT ticks all the boxes for my specific applications. RE: Post-Tensioning Software (Structural). To Kootk - Thank you for the list. That is excellent and exactly what I was seeking.