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Woodworks Shearwalls USA – Version History

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Woodworks Shearwalls USA – Version History WoodWorks Shearwalls USA – Version History This document provides descriptions of all new features, bug fixes, and other changes made to the USA version of the WoodWorks Shearwalls program since Shearwalls 2000. The most recent major version of Shearwalls is Version 11, released in November 2016. The most recent service release is Version 11.1 , released in May 2017. This file last updated with changes April 26, 2017. Click on the links below to go to the changes for the corresponding release. (DO = Design Office) Shearwalls 11.1 – DO11, SR-1 Shearwalls 10.43 – Hot fix Shearwalls 9.3 – DO 9, SR-3` Shearwalls 10.42 – DO 10, SR-4b Shearwalls 11.0.1 – DO11, SR-a Shearwalls 9.21, 9.22, and 9.25 – Hot fixes Shearwalls 10.41 – DO 10, SR-4a Shearwalls 11 – DO 11 Shearwalls 9.2 – DO 9, SR-2 Shearwalls 10.4 – DO 10, SR-4 Shearwalls 9.13 – DO 9, SR-1c Shearwalls 10.31 – DO 10, SR-3a Shearwalls 9.12 – Hot fix Shearwalls 10.3 – DO 10, SR-3 Shearwalls 9.11 – DO 9 SR-1b Shearwalls 10.22, 10.23 and 10.24 – Hot fixes Shearwalls 9.1 – DO 9, SR-1 Shearwalls 9 – DO 9 Shearwalls 10.21 – DO 10, SR-2a Shearwalls 10.2 – DO 10, SR-2 Older Versions Shearwalls 10.11, 10.12, and 10.13 – Hot fixes Shearwalls 10.1 – DO 10, SR-1 Shearwalls 10 – DO 10 Shearwalls 11.1 – May 15, 2017 – Design Office 11, Service Release 1 1. Wind Story Drift Design Setting (Change 232) Because the newly added wind story drift limitations from ASCE 7 CC.1.2 can be difficult to meet and are not mandatory according to ASCE 7 Appendix C, a design setting has been added to activate the calculation of wind story drift, and Option setting and Show menu item to allow you to turn off the output of story drift output tables independently for wind and seismic design. a) Design Setting A new data group called Wind serviceability ASCE 7 CC.1.2 has been added to the Design Settings page. In it there is a new checkbox allowing you to control whether to calculate story drift for wind loads, and the existing setting to enter the drift limit as a ratio of storey height. b) Options Setting The Options setting controlling which design results tables to view that previously said Storey shear table is now two settings Story shear – seismic and Story shear – wind. c) Show menu The Show menu now has two items – Story drift – seismic and Story drift - wind instead of just Story drift. 2. Perforated Shearwall Issues Several problems associated with perforated walls, particularly with the capacity adjustment factor Co from SDPWS 4.3.3.5, were corrected: a) Co Factors Greater than 1.0 using SDPWS Eq’n 4.3-5 (Bug 3220) The program calculated Co factors significantly greater than 1.0 while using SDPWS Equation 4.3-5 (as opposed to Table 4.3.3.5), when there are narrow segments in the wall, because the SDPWS does not explicitly limit Co to 1.0. When there are no narrow segments to which an aspect ratio factor is applied, as per the note to the definition of ∑Li in 4.3.3.5, the minimum limit of h/3 the opening height ensures that Co can never be greater than 1.0, but it can be when the aspect ratio factor is applied. This was particularly evident when there are no openings in the wall and no need for a perforation factor, but one was made anyway on the assumption that it would always be 1.0. The program now limits Co to 1.0, and does so even when there are openings, as we believe this to be the intention of the SDPWS. b) Design Results Using Co Factor from Wall on Upper Story (Bug 3225) Occasionally, the Shear Results output table displays the Co factor for a wall on the story immediately above a wall, rather than the correct factor for that wall, and shows a capacity and design ratio based on that factor. This is just a reporting issue, and these values were not used to design the wall or determine deflections and force distribution. c) Truncated Perforated Shearwall Issues The following bugs apply to the perforated shearwalls such that one or more openings in the shearwall have no full-height segments between them and one end of the wall, so that the non-full height segments and adjacent openings have been stripped from the wall for calculation of Co. The problems are particularly evident when there are no openings left in the truncated wall and no need for a perforation factor, so that the Co factor should be 1.0, and the factors were showing up as any number. The incorrect Co factors appeared in the shear results table and in elevation view, and were used in the calculation of shearwall capacity and hold-down forces. These problems all been corrected. i. Co Factor for Truncated Perforated Shearwalls Using Equation 4.3-5 (Bug 3231) For truncated perforated shearwalls the value of the total opening area Ao in SDPWS equation 4.3-5 still included the length the openings that should have been ignored. The total shearwall length Ltot was calculated correctly by excluding the openings, leading to nonsensical values of Co. ii. Co Factor for Truncated Perforated Shearwalls Using Table 4.3.3.5 (Bug 3232) For seismic design of truncated perforated shearwalls, the total shearwall length Ltot in note 2 of Table 4.3.3.5 was sometimes including the length of the segments and openings that should have been ignored, whereas the sum of segment lengths ∑Li excluded them, leading to incorrect Co values. For wind design the correct Ltot was used, leading to inconsistent seismic and wind Co values. iii. Uplift Force t for Truncated Perforated Shearwalls (Bug 3234) Truncated perforated shearwalls were showing the anchorage uplift force t from SDPWS 4.3.6.4.2.1 on non-full-height segments that had been ignored in the calculation of Co. This uplift force t appears in elevation view and is not used for other calculations and has no effect on shearwall design or force distribution. It has now been removed from these segments. 3. Gap in Building Footprint for Openings Extending to Wall End (Bug 3142) Following a specific sequence of wall input steps, it was possible to create a gap in the exterior footprint, rendering the project file unusable. This occurred when an opening was than extends to the very end of a wall, meeting a perpendicular wall. If the location of the wall with the opening is then moved, followed by moving the wall it meets, the gap is created. This problem has been corrected. 4. Nonsensical Hold-down Forces under Monoslope Gable End (Bug 3217) When a wall was underneath a gable end from a monoslope roof, the hold-down forces calculated were nonsensically large. This has been corrected. 5. Crash for Newly Opened Projects in Structure View (Bug 3210) Occasionally, when project files were opened in Structure view, they did not allow the activation of the input form button and did not show the Structure Input form. Upon moving to any other view, the program would crash. This problem could be avoided by pressing the Structure input button, after which the program operated as it normally does. The program no longer crashes when this happens, but it is still necessary to click the Structure button to view the Input form. 6. Interaction of Ignore Contribution and Allow 3.5:1 Aspect Settings (Bug 3233) The following bugs pertain to the disabling and re-enabling of the Design Setting Ignore contribution of … Gypsum-based materials … combined with wood structural panels … based on the state of the Allow 3.5:1 aspect ratio setting, a) Dependence on Ignore for Seismic Design Setting The disabling/enabling happened only when the Ignore contribution of … All gypsum materials …seismic design setting was unchecked. This was the behaviour of the corresponding settings for the previous version, but with the SDPWS 2015 implementation, these settings should now be independent. This setting is now enabled whenever Allow 3.5:1 aspect ratio is checked. b) Greying of Text When the checkbox is disabled, the program now still shows the text explaining the setting, instead of greying it out. 7. Display Settings Names (Change 231) The word “table” has been removed from several Options Settings in the Display design results group, as it had been inconsistently applied to some design results tables and not others. The setting that previously said Materials table now says Sheathing/framing materials; in all other cases the word “table” has just been excised. 8. Ignore Non-wood-panel Data Group Title (Bug 3219) The data group title Ignore non-wood-panel contribution… has changed to Ignore contribution of…. so that the elision of the title and the checkbox text, which had been changed for the 2015 SDPWS implementation, now makes grammatical sense. Previous Versions Note that an asterisk (*) beside any item in the list of previous releases below indicates that the item was added to the version history record after that version was released. Shearwalls 11.0.1 – December 22, 2016 – Design Office 11, SR-a This version released to address the following problems: 9. Sporadic Failure of 3-Term Deflection with Non-FHS Segments (Bug 3209) When the setting "Rigidity for shear force distribution based on… is set to use the deflection of wall segments and the 3-term equation is selected for the SDPWS deflection equation setting, and there are non-full-height sheathing segments present, sometimes the forces were distributed in an inconsistent and unpredictable manner from one design to the next.
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