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v4.5.5.0
New Features
Mildly reinforced members now use effective moment of inertia for deflections instead of bilinear deflections.
Added warnings for reducing shear / torsion demand near support when we detect that it may be inappropriate to do so
Expanded section property tables in output
Added more options on computing shear capacity of composite sections
Program Changes
Default files now correctly set the date to the current date
Dash out flexure rows where capacity is not calculated
Distributed load grid split into area load and line load grid to help differentiate the loads for the reviewer.
Topping surface type changes to just intentionally roughened or smooth. If roughened, the program will check if reinforcement is required, if smooth minimum is always required.
Expanded help documentation on the website. Use Help → User manual or F1 to get to it.
Mechanically anchored reinforcement now instantly develops tension and compression.
Load bearing width for ledge design changed from 3 inches to 4 inches.
Prestress losses added to detailed flexure printout
Bug Fixes
Fix issue where composite members could get stuck in the analysis
Fix issue for the PCI Method of Horizontal Shear resulting in higher demand
Plain concrete strength now removed as an option as it was primarily used for sections with very low demand (which is handled differently now)
Fix issue resulting in lower than expected d values for shear. This was intermittent and only slightly conservative (<5% in d value)
Fix issue where load descriptions were being added to output incorrectly
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New Features
Length input can now use a - or a space as a delimiter between feet and inches.
Added input of the Nu/Vu ratio for bearing. This value can be used to set Cr to 1 if set to 0.
Added the design number to the project information on the design criteria tab
Project description now supports multiple lines. Just press enter to add a new line.
Now calculated P/A used for DT Stem Mesh. Results displayed below shear output on Strength summary
Added deflection option to use either midspan section properties or to vary by location.
Added self weight multiplier to vibrations analysis. Vibration analysis now only includes self weight and weight of participants for the total weight. Often time this weight should be higher, for those cases the self weight multiplier can be used.
Program Changes
Interface has been cleaned up in multiple areas for better readability.
Performance summary was reformatted. Since a loading summary exists now, the loads were removed and a summary of bearing was added in.
Default files were updated to contain new default settings.
When checking φMn to 1.2Mcr, the cracking moment will now longer user the corresponding dead load factor from the given load combination but will instead use a service load factor of 1.
Fixed issue for composite lightweight members where losses and deflections were using a slightly higher elastic modulus than expected
Handling tension limit changes
Any initial stage using transfer limits will now display and compute Astt
Tension exceeding the cracking stress will now display as a warning instead of an error
Bug fixes
Fixed issue where false horizontal shear errors were being thrown.
Fixed issue where upward live load deflections were not being shown on individual service combinations.
Fixed error where the program was using the Class U limit as the cracking stress limit and not the modulus of rupture.
1.2Mcr is now back in the flexure graphs.
Attempted fix for the reinforcement tab not refreshing when reinforcement was added.
New Documentation and Hand Calculations
New help pages on cracking moment, flexure capacity, double T stem mesh limit, and transformed section properties.
New hand calculations, posted on their corresponding help pages, for cracking moment, deflections and transformed section properties.
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