# SCALE Structural Calculations > Structural engineering calculation and component detailing software for engineers. (iPhone/iPad app by Fitzroy Systems Limited.) - Source: https://appshunter.io/ios/app/scale-structural-calculations/id1225174136 (this page in markdown: same URL + `.md`) - Developer: [Fitzroy Systems Limited](https://appshunter.io/developer/1225174135) - Category: Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 12.0 · 82 MB - Languages: English - Released: 2018-08-02 - Data updated: 2026-06-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/scale-structural-calculations/id1225174136/reviews.md ## What is SCALE Structural Calculations? SCALE produces structural engineers' calculations and component details for the design of a variety of components such as beams, columns and slabs, using steel, concrete, masonry and timber. SCALE outputs pdf and docx files, consisting of a set of pages, neatly titled, dated and numbered, containing calculations and component details made to a standard suitable for submission to a checking authority. “I use SCALE because it produces neatly composed calculation sheets which can easily be checked.” SCALE incorporates a library of over 600 proforma calculations, which are accessed via in-app subscription. The content of this library is continually under review, proformas being added or modified as codes of practice develop and change. All proformas include a parallel set of calculations for Eurocodes and British Standards. “I would like to express my thanks for the many years of use of your excellent design software which has made my life so much easier.” SCALE includes LUCID and SPADE, 'expert systems’ which know about reinforced concrete, steelwork, timber and masonry detailing, and build the detail using the knowledge contained within their databases. “I am self employed and use SCALE everyday for design. I have also used your LUCID automatic reinforcement detailing / bar schedule for ground beams and use the automatic steel connection detailing program. I have never had any queries on either of these from site.” SCALE includes NL-STRESS for 2D/3D elastic analysis with linking between analysis and design, non-linear (plastic and stability) analysis, and numerous pre and post-processors for vehicle loads, guyed masts etc. SCALE users produce over one million pages of structural calculations per year; SCALE has condensed print and summary options for saving paper. Subscription Details. • Subscribe to all SCALE, LUCID, SPADE and NL-STRESS proformas and data files, including both British Standards and Eurocodes, via auto-renewable in-app subscription. • Payment will be charged to your iTunes Account at the end of your free trial, if offered, or at confirmation of purchase. • Your subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Your account will be charged for renewal within 24-hours prior to the end of the current period, at the price shown below. • Monthly auto-renewal £49.99 GBP inc VAT. • Annual auto-renewal £299.99 GBP inc VAT. • You can manage subscriptions and auto-renewal may be turned off by going to your Account Settings after purchase. More information: https://fitzroy.com/iPad Privacy policy: https://fitzroy.com/privacy Terms of use: https://fitzroy.com/termsofuse ## Key features - Structural calculations for beams, columns, slabs - Component detailing for steel, concrete, masonry, timber - Library of over 600 proforma calculations - Expert systems for detailing (LUCID, SPADE) - 2D/3D elastic analysis (NL-STRESS) - PDF and DOCX output for submission - Support for Eurocodes and British Standards ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Full subscription to SCALE | $50.99 | per month | | Full subscription to SCALE | $299.99 | per year | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/scale-structural-calculations/id1225174136/reviews.md ### 4/5 — Works Well on an IPad *2020-07-09* Just that really ## Frequently asked questions about SCALE Structural Calculations ### What types of structural components can SCALE calculate? SCALE can produce calculations and component details for a variety of structural components, including beams, columns, and slabs. It supports designs using steel, concrete, masonry, and timber. ### Does SCALE offer support for both British Standards and Eurocodes? Yes, SCALE includes a parallel set of calculations for both Eurocodes and British Standards within its proformas. This ensures compliance with different regional building codes. ### How does SCALE handle output and submission of calculations? SCALE outputs calculation sheets and component details in PDF and DOCX file formats. These outputs are neatly titled, dated, and numbered, making them suitable for submission to checking authorities. ### What are the subscription options for SCALE? SCALE offers auto-renewable in-app subscriptions for access to all proformas and data files. Options include monthly at £49.99 GBP and annual at £299.99 GBP, both with a 14-day free trial. ### Can I manage my SCALE subscription? Yes, you can manage your subscription and turn off auto-renewal by going to your Account Settings after purchase. Auto-renewal can be turned off at least 24 hours before the end of the current period. ### What is the age rating for SCALE? SCALE has an age rating of 4+. This indicates it is suitable for users of all ages, though its professional nature means it is primarily intended for adult users. ### On which devices can I use SCALE? Currently, SCALE is supported on iPads. Users can access its comprehensive structural calculation and detailing features on their Apple tablet devices. ### How often is SCALE updated? SCALE was last updated on September 2nd, 2025, with version 7.51. The app's library of proformas is continually under review and updated as codes of practice evolve. ## Version history (last 5 releases) ### 7.51 — 2025-09-02 Updates in SCALE 7.51: • Built with the latest Xcode 16.4 and iPadOS 18.5 SDK. • SCALE 7.51 supports all iPads from iOS 12 onwards: all iPad Pros, all iPad Airs, iPad 5 onwards, and iPad Mini 2 onwards. • SCALE 7.51 supports all Macs with Apple Silicon, M1, M2, M3, M4 onwards. • Updated sc190 and lu910, Bar Bending Schedule, to use BS8666:2020. • Updated code=3 Second Generation Eurocode versions of Masonry proformas to recently released NA to BS EN 1996-1-1:2022. • Updated sc044, which runs through all SCALE examples, to now colourise the index according to the progress of the Second Generation Eurocode implementation in SCALE, and added an index page to the pdf explaining the progress. • Modifications to proformas and parametric files such that option 47 runs correctly without any errors. Option 47 provides a quick check that every example runs correctly regardless of what variables are already stored in the stack file at the start of the run from any previous run. Using the default npat=6 zni=5 option 47 creates 700,000 files totalling 50GB! • Aesthetic improvements to harmonise to house style: one space between words, two spaces after a full stop, replaced deg. with °, replaced re-run with rerun. • Modified 761 proforma files and 167 parametric files. ### 7.48 — 2025-06-18 Updates in SCALE 7.48: • Fixed spacings on NL-VIEW toolbar. • Launching help from NL-VIEW now opens manual at Chapter 6: NL-VIEW. ### 7.47 — 2025-06-18 Updates in SCALE 7.47: • Built with the latest Xcode 16.4 and iPadOS 18.5 SDK. • SCALE 7.47 supports all iPads from iOS 12 onwards: all iPad Pros, all iPad Airs, iPad 5 onwards, and iPad Mini 2 onwards. • SCALE 7.47 supports all Macs with Apple Silicon, M1, M2, M3, M4 onwards. • Updated 35 proforma files: sc044, sc110, sc114, sc115, sc116, sc122, sc132, sc138, sc139, sc140, sc141, sc142, sc143, sc144, sc145, sc146, sc148, sc151, sc153, sc155, sc157, sc160, sc162, sc165, sc732, sc734, sc735, sc742, sc743, sc744, sc745, sc746, sc747, sc748, sc749. • Updated 11 parametric files: sc732, sc734, sc735, sc742, sc743, sc744, sc745, sc746, sc747, sc748, sc749. • TAPE menu option Draw->Delete now deletes. • NL-GUI menu option Geometry->View structure now displays correctly. • Help manual: emboldened section headings for Chapter 2, removed references to Windows in Chapter 6, updated Chapter 9 - brief description of all proformas. Preparations for Xcode 26 and iPadOS 26 SDK: • Moved buttons away from both sides on all toolbars, to make space for the new traffic light window buttons. • Removed Help menu option for "Mac (designed for iPad)" option, otherwise there were two Help menus. • Increased size of status bar text to match iPadOS 26 status bar text. • Refactored NL-VIEW toolbar so it doesn't break. • Restructured all Help Manual section headings to fix border being replaced with cubed characters. ### 7.45 — 2025-03-31 Updates in SCALE 7.45: • Built with the latest Xcode 16.2 and iPadOS 18.2 SDK. • SCALE 7.45 supports all iPads from iOS 12 onwards: all iPad Pros, all iPad Airs, iPad 5 onwards, and iPad Mini 2 onwards. • SCALE 7.45 supports all Macs with Apple Silicon, M1, M2, M3, M4 onwards. • Fixed a bug that was causing crashes. • Modified over 200 proformas to fix issues identified when testing using Option 44 and the newly multithreaded Options 42 and 47. 
• Modified over 260 proformas to prepare the ground to accommodate the Second-Generation Eurocodes. (The BSI plan to withdraw the First-Generation Eurocodes in March 2028.) 
• Added a new testing proforma: Option 48 compares code=2 and code=3 implementations for Second-Generation Eurocode changes. • New SPADE proformas: • sp276 Chevron bracing of simple trussed rafter roofs, • sp639 Typical reinforced blockwork column/wall, • sp640 Reinforced masonry retaining wall, • sp737 Typical reinforced concrete wall contraction joint, • sp738 Typical external column foundation detail, • sp739 Typical edge foundation detail. • Overall 318 SCALE proformas, 26 SPADE proformas, 4 LUCID proformas, and over 250 parametric files have been modified in SCALE 7.45. ### 7.29 — 2024-06-10 Updates in SCALE 7.29: • Built with the latest Xcode 15.4 and iPadOS 17.5 SDK. • SCALE 7.29 supports all iPads from iOS 12 onwards: all iPad Pros, all iPad Airs, iPad 5 onwards, and iPad Mini 2 onwards. • SCALE 7.29 supports all Macs with Apple Silicon, M1, M2, M3 onwards. • Updated for latest 13" and 11" iPad Pro 2024. • Fixed NL-GUI Joint Coordinates table selection problem. • SCALE now saves and reads back assignments entered as responses from the stack file, e.g. if you enter 20*b as a response to +F=???? then "20*b" will be brought up as the default response for +F=???? the next time you run the proforma using this stack file. • pdf max pages increased from 8,191 to 819,100. • LUCID and SPADE numerical output no longer remove the leading zero before a decimal point. • Maximum size of EDIT box increased from 100 rows to 200 rows. • NL-VIEW: added CONIC (Circular and Elliptical) and OCTAGON sections. • Fixed saving all variables to the stack file! • Modified SCALE so that any string variables declared before START are only saved to the stack file if they are used, to match treatment of numerical variables. • Fixed behaviour of "Redo Stage", entry now correctly goes back to the previous occurrence of ">" in the proforma file. • When "Restart" is selected in the middle of a proforma, entry now goes back to the first entry in the actual proforma, preserving any values entered. • When "Back" is selected from viewing the final calcs, SCALE will now replace the newly created stack file with the previous one used at the start of the proforma, to exactly replicate re-running the proforma. • Revised testing proformas: • sc040 runs through a list of sc041, which runs sc042 with multiple threads, to parametrically verify SCALE proformas. • sc043 runs all 3700 examples, output to individual pdf, docx and dxf files. • sc044 (and sc045 summaries) multithreaded run all examples, building combined, indexed and outlined/bookmarked pdfs. • sc046 multithreaded run all examples two/three times, creates pdf highlighting any differences - regression testing for stack files. • sc047 multithreaded parametric testing of all examples to check that the ans= examples run through correctly regardless of any previous stack file values. • sc049 display proforma logic for every proforma. • New SPADE proformas: • sp203 Timber joist hangers • sp205 Timber shear wall - with vertical or horizontal sheathing • sp270 Miscellaneous timber/steel details • sp271 Flitched beam fully restrained • sp272 Base of timber column • sp273 Top of timber column • sp274 Standard bracing for ceiling ties • sp275 Diagonal bracing of simple trussed rafter roofs • sp310 Portal eaves haunched connection - flush top • sp311 Portal eaves haunched connection - extended top • sp451 Moment connections: Extended end plate - beam to column • sp453 Moment connections: Flush end plate connection - beam to column • sp490 Splices: Beam splice with flange plates and web plate • sp491 Splices: Beam splice with end plates and single flange plate • sp508 CHS column base plate • sp509 SHS or RHS column base plate • sp510 UB or UC column base plate • sp602 Typical reinforced ground beam • sp603 Typical detail of mesh reinforced suspended slab • sp604 Typical ground bearing slab • sp621 Typical detail for step down of strip footing • sp660 Typical pilecap arrangement • sp670 Ancon Windposts/Parapet posts • sp671 Ancon Windpost/Parapet post connections • sp672 Ancon Angle Support System • sp673 Ancon Lintels • sp674 Catnic Lintels • sp675 IG Lintels • sp677 Detail at purlin supporting services • sp680 Typical handrail details • sp730 Typical soakaway detail • sp731 Typical land drain detail • sp732 Concreting of drains laid near to foundations • sp733 Drain passing under foundation • sp734 Miscellaneous concrete details • sp735 Corner padstone supporting hip/valley beam • sp736 Composite beam cross-section and elevation • Modified 189 SCALE proformas, 55 SPADE proformas and 17 LUCID proformas. ## Apps similar to SCALE Structural Calculations | App | Rating | Price | Category | | --- | --- | --- | --- | | [CASA Space Frame 3D](https://appshunter.io/ios/app/casa-space-frame-3d/id371089612) | 4.0 (1) | $299.99 | Productivity | | [Business Analyzer iDecision](https://appshunter.io/ios/app/business-analyzer-idecision/id946550545) | — | Free | Productivity | | [Inspect7](https://appshunter.io/ios/app/inspect7/id1445527019) | — | Free | Productivity | | [Arthur Owner](https://appshunter.io/ios/app/arthur-owner/id1458340195) | — | Free | Productivity | | [iDrawlix Mobile](https://appshunter.io/ios/app/idrawlix-mobile/id1439486128) | 1.0 (1) | Free | Productivity | | [WriteGenius: AI Article Writer](https://appshunter.io/ios/app/writegenius-ai-article-writer/id6467768489) | 5.0 (1) | Free | Productivity | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). 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