[{"data":1,"prerenderedAt":308},["ShallowReactive",2],{"copy:home:en":3},{"seo":4,"hero":7,"check":23,"facts":62,"tasks":88,"report":96,"xfem":131,"pricing":163,"word":219,"verify":254,"customers":279,"faq":285,"close":305},{"title":5,"description":6},"Structural calculations you can check · Struct4U","Eurocode software for beams, frames, 3D FEM, sections and parametric Excel models. Every formula and clause is in the report. Free download; from {h2d}\u002Fh.",{"newLabel":8,"newText":9,"eyebrow":10,"h1":11,"sub":12,"micro":13,"picture":20},"New","Fire resistance for steel in XFrame2D and XBeam2D","Eurocode · NL, BE, UK, DE, IT annexes · AISC 360-16 · ACI 318-19","Structural calculations\nyou can check,\n[line by line.]","3D FEM, 2D frames, beams, a concrete and steel toolbox and parametric Excel models, to Eurocode. Every formula and clause is in the report, so you can recheck any number with a pocket calculator. Pay only for the hours you calculate.",[14,15,16,17,18,19],"Free download","first hour free","[{credit} welcome credit when you register]","then pay per use","no credit card","Windows",{"alt":21,"caption":22},"3D model of a large steel hall in XFEM4U","A model made with XFEM4U.",{"aria":24,"title":25,"desc":26,"restraint":27,"annexLabel":28,"annex":29,"input":32,"span":33,"gk":34,"qk":35,"grade":36,"profile":37,"smaller":38,"larger":39,"glyph":40,"actions":41,"governing":42,"psi0":43,"checks":44,"ucDef":45,"names":46,"govTag":50,"notOk":51,"limitNote":52,"working":53,"refs":54,"note":58,"cta":59,"summary":60,"diagram":61},"Live beam check","Live check","Simply supported steel beam, uniform load","Full lateral restraint assumed","Factors",{"recommended":30,"nl":31},"EN 1990 recommended","NL annex (CC2)","Input","Span","Permanent","Variable","Steel grade","Profile","Smaller profile","Larger profile","Cross-section to scale; the dashed outline is IPE 400","Actions and forces","governing","ψ₀ = {psi}: category A, floors","Checks","UC = effect \u002F resistance",{"bending":47,"shear":48,"deflection":49},"Bending","Shear","Deflection","Governing","not OK","\u003Ci>L\u003C\u002Fi>\u002F250 is an example limit; see national annex.","Working",{"load":55,"char":56,"limit":57},"EN 1990","characteristic","example limit","\u003Cstrong>Illustrative check.\u003C\u002Fstrong> Design with XBeam2D.","See XBeam2D","{check} governs, UC {uc}. Design load {qd} kN\u002Fm, equation ({eq}).","Simply supported beam: design load {qd} kN\u002Fm over {span} m; bending moment {m} kNm; shear force {v} kN; deflection {d} mm.",{"label":63,"title":64,"soft":65,"note":66,"items":69},"Facts","Facts you can check,","not adjectives.",{"label":67,"text":68},"Sources","Release notes per program, November 2022 to August 2026. Price list {priceListDate}. Users and countries: Struct4U, {year}.",[70,73,76,79,82,85],{"value":71,"label":72},"{users}","Users",{"value":74,"label":75},"{countries}","Countries",{"value":77,"label":78},"5","National annexes",{"value":80,"label":81},"20+","Releases per program",{"value":83,"label":84},"{languages}","Software languages",{"value":86,"label":87},"{cap}","Annual cap",{"label":89,"title":90,"lead":91,"notes":92,"which":94,"tileAria":95},"Tasks","What do you need to calculate?","Start from the job, not the product name. Four Windows applications and one Excel workbook, all a free download. Every application writes the same transparent report, straight into Word if you like.",[93],"One prepaid credit works in every application, so you can start small.","Which program do I need?","{task}: {program}, {price}",{"label":97,"title":98,"soft":99,"lead":100,"note":101,"link":102,"fig":103},"Transparency","No black box.","Every formula, every clause, every value.","The report shows the formula as it appears in the code, the values that went in and the result with its unit. Your reviewer can follow it, and you can recheck it by hand.","The reference beam, an IPE 300 in S235 spanning 6 m, as it appears in the report.","Sample reports, in Dutch and English",{"headerLeft":104,"headerRight":105,"heading":106,"clause":107,"classNote":108,"src":109,"combo":113,"ann":114,"caption":130},"XBeam2D · Beam B1 · IPE 300 · S235","EN 1993-1-1 · p. 4","Bending moment","EN 1993-1-1 §6.2.5","Cross-section class 1 (Table 5.2): the plastic resistance applies.",{"wpl":110,"fy":111,"gm0":112},"IPE 300","S235, t ≤ 40 mm","§6.1(1), recommended","CO{n}",[115,118,121,124,127],{"title":116,"text":117},"Clause reference","Every check names its article.",{"title":119,"text":120},"Inputs with their source","Every value, its unit and origin.",{"title":122,"text":123},"The formula","As printed, with its equation number.",{"title":125,"text":126},"Values filled in","Re-key: {wpl} × {fy} ÷ 1000 = {mcrd}",{"title":128,"text":129},"Unity check","Result, limit and load combination.","Excerpt from an XBeam2D report: the bending check of beam B1. Illustrative recreation; the software writes every check in this structure.",{"label":132,"title":133,"soft":134,"lead":135,"notes":136,"link":140,"alt":141,"caption":142,"specCaption":143,"spec":144},"3D analysis","XFEM4U: 3D frames, plates and walls.","Frames second-order, plates linear.","Steel, concrete and timber in one 3D model. With steel or timber checks switched on, frames are always analysed geometrically non-linear, with global imperfections applied automatically. Plates and walls are analysed linearly. Every member check is in the report, clause by clause.",[137],{"label":138,"text":139},"Clause","Global sway imperfections to EN 1993-1-1 §5.3.2(3)a are applied automatically in both directions, so every ULS combination is calculated twice.","About XFEM4U","Steel trusses and columns of a building in XFEM4U, coloured by displacement","Results in XFEM4U: the steel trusses and columns of a building, analysed geometrically non-linear for the ULS combination of wind and a 1\u002F300 sway imperfection, coloured by displacement.","Specifications, in short",[145,148,151,154,157,160],{"th":146,"td":147},"Elements","Beams and columns in steel, concrete and timber; plates, slabs and walls",{"th":149,"td":150},"Analysis","Frames: first order (GL) or second order (GNL), always GNL with steel or timber checks. Plates and walls: linear",{"th":152,"td":153},"Codes","\u003Cspan class=\"m\">EN 1990 · 1991 · 1992-1-1 · 1993-1-1, -1-2, -1-8 · 1995-1-1 · AISC 360-16 · ACI 318-19 · NPR 9998\u003C\u002Fspan>",{"th":155,"td":156},"Annexes","\u003Cspan class=\"m\">NL · BE · UK · DE · IT\u003C\u002Fspan>",{"th":158,"td":159},"Exchange","IFC, Excel and XML; Tekla import, IDEA StatiCa export and DXF export with Premium",{"th":161,"td":162},"Price","\u003Cb class=\"m\">{h3d}\u002Fh\u003C\u002Fb> pay-per-use, or the Advanced licence at \u003Cspan class=\"m\">{adv}\u003C\u002Fspan> a year",{"label":164,"title":165,"soft":166,"lead":167,"breakEven":168,"breakEvenMonth":169,"vatNote":170,"calc":171,"table":192,"facts":203,"full":218},"Pricing","Pay for the hours you calculate.","Never more than {cap} a year per computer.","Buy prepaid credit, billed per minute: \u003Cstrong>{h2d}\u002Fh\u003C\u002Fstrong> for the 2D programs, \u003Cstrong>{h3d}\u002Fh\u003C\u002Fstrong> for XFEM4U. Registering gives you \u003Cstrong>{credit}\u003C\u002Fstrong> of credit as a welcome gift, and because you pay in advance, there’s never an invoice afterwards.","Break-even","≈ {m} hours a month.","All prices excl. VAT. Price list {priceListDate}.",{"question":172,"modes":173,"hMonth":176,"hYear":177,"ppu":178,"lic2d":179,"lic3d":180,"perYear":181,"cheaperPpu":182,"cheaperLic":183,"closeCall":184,"capReached":185,"breakEvenAt":186,"legendPpu":187,"legendLic":188,"axes":189,"capLabel":190,"chartAria":191},"How many hours a month do you calculate?",[174,175],"2D programs","XFEM4U","h\u002Fmonth","{n} h\u002Fyear","Pay-per-use","Basic 2D licence","Advanced licence","\u002Fyear","Pay-per-use is cheaper by \u003Cb>{amount} a year\u003C\u002Fb>.","The licence is cheaper by \u003Cb>{amount} a year\u003C\u002Fb>.","The licence saves only \u003Cb>{amount} a year\u003C\u002Fb>, so pay-per-use still wins: no commitment.","Pay-per-use has reached its cap.","Break-even is at about {h} hours a month.","Pay-per-use, capped","Annual licence","x: hours per month · y: € per year","Cap: {cap} per computer per year","Yearly cost of pay-per-use against the {licence}, from 0 to 35 hours a month. At {h} hours a month: pay-per-use {ppu}, licence {lic}.",{"caption":193,"licence":194,"cols":195,"single":199,"singleNote":200,"network":201,"networkNote":202},"Licences, per year","Licence",[196,197,198],"Basic\u003Cbr>2D","Advanced\u003Cbr>2D + 3D","Premium","Single user","max. 2 workstations","Network","per simultaneous user",[204,206,209,212,215],{"label":178,"text":205},"{h2d}\u002Fh 2D · {h3d}\u002Fh XFEM4U · billed per minute · capped at {cap} per computer per year, all programs · top-ups from {min}",{"label":207,"text":208},"Welcome","{credit} of pay-per-use credit when you register in the program: about {h2} h of 2D or {h3} h of XFEM4U",{"label":210,"text":211},"2D and 3D","Basic 2D covers XBeam2D, XFrame2D, XConstruct and XSpreadsheets. Advanced adds XFEM4U. Premium adds DXF export, Tekla import, IDEA StatiCa export and Python",{"label":213,"text":214},"Students","Free one-year licence with a university e-mail address (watermarked, non-commercial)",{"label":216,"text":217},"AI Assistant","Included with every account, about 100 questions a month · more questions from {basic}\u002Fmonth · Pro {pro}\u002Fmonth","Full pricing",{"label":220,"title":221,"soft":222,"lead":223,"note":224,"steps":227,"video":237,"block":243},"Report","Your calculation in your Word report.","Always current.","The Word add-in puts the report of any Struct4U application into your own Word document as a linked block. Change the model and Word marks the block out of date; one click updates it. No screenshots, no retyping.",{"label":225,"text":226},"Requires","Word for Windows (desktop). The add-in installs with each program.",[228,231,234],{"title":229,"text":230},"Drop the model","Drag an XFEM4U, XFrame2D, XBeam2D or XConstruct model onto the Calculations pane. The report goes in at the cursor as a linked block.",{"title":232,"text":233},"Change the model","Each block keeps a fingerprint of its model. When the model changes, the block is marked out of date.",{"title":235,"text":236},"Update","Update recalculates the block in place; Update all does every out-of-date block. Nothing is ever refreshed silently.",{"play":238,"aria":239,"alt":240,"lang":241,"caption":242},"Watch the demo","Play the Word add-in demo video ({duration})","Word add-in demo: calculation reports, straight into Word","English","Word add-in demo ({lang}). It loads and plays only when you click.",{"file":244,"heading":245,"intro":246,"linked":247,"upToDate":248,"update":235,"rows":249,"fresh":251,"stale":252,"caption":253},"Report-B1.docx","4.2 Steel floor beam B1","Checked to {code}. The results below are linked to the model.","Linked · beam-B1.xbe2","Up to date",{"beam":250,"bending":47,"shear":48,"deflection":49},"Beam","Change the beam in the live check at the top of this page: this block goes out of date, just as it does in Word.","The model changed, so this block is out of date. Click Update to bring in the new results.","A linked block in Word, recreated. When the model changes, the block is marked out of date until you click Update.",{"label":255,"title":256,"soft":257,"lead":258,"note":259,"items":260,"recheck":272,"examples":273,"verification":277},"Verification","Don’t take our word for it.","Check the report.","Struct4U reports are written to be rechecked. A reviewer can follow every step without opening the model, and you can re-key any number.","The sample reports print the applied standards with their edition and national annex, and the consequence class.",[261,264,266,269],{"title":262,"text":263},"Standards named","Each report names the codes it applied, with edition, national annex and consequence class.",{"title":119,"text":265},"Section properties, material strengths and partial factors, each with its unit.",{"title":267,"text":268},"Formula, then values","Every check prints the formula with its equation number, fills in the values and gives the result.",{"title":270,"text":271},"Unity check per member","A table lists each member with its combination, the article and the unity check.","Recheck it now: the \u003Ca href=\"#check\">live check\u003C\u002Fa> at the top of this page shows every step for a simple beam.",{"label":274,"title":275,"text":276},"Sample reports","Examples and sample reports","Real reports from XFEM4U, XFrame2D, XBeam2D and XConstruct, in Dutch and English.",{"label":255,"title":255,"text":278},"Where Struct4U publishes its verification cases: hand calculations and textbook solutions, each with the deviation stated.",{"label":280,"title":281,"soft":282,"note":283,"indep":284},"Customers","Engineers who use it.","In their own words.","The highlights are ours.","\u003Cstrong>An independent Dutch company, since 2014.\u003C\u002Fstrong> Struct4U is based in Rotterdam. The programmers and structural engineers who build the software also answer your questions.",{"label":286,"title":287,"link":288,"items":289},"FAQ","Questions engineers ask first.","More answers",[290,293,296,299,302],{"q":291,"a":292},"What does 5 hours a month cost?","With pay-per-use, 5 hours a month in the 2D programs costs \u003Cb>{m2d}\u003C\u002Fb> a month, or {y2d} a year. In XFEM4U it’s \u003Cb>{m3d}\u003C\u002Fb> a month, or {y3d} a year. You’re billed per minute from prepaid credit, never more than \u003Cb>{cap}\u003C\u002Fb> per computer per year, and the first {credit} is a welcome gift when you register. A Basic 2D licence costs {lic2d} a year, so at 5 hours a month pay-per-use is cheaper. All prices excl. VAT.",{"q":294,"a":295},"Which codes and national annexes are covered?","Eurocodes for steel, concrete and timber with the national annexes of the Netherlands, Belgium, the United Kingdom, Germany and Italy, plus ANSI\u002FAISC 360-16 for steel and ANSI\u002FACI 318-19 for concrete. XConstruct follows the Dutch annex only. The \u003Ca href=\"{codes}\">design codes\u003C\u002Fa> page has the overview per program.",{"q":297,"a":298},"Can my reviewer follow the output?","Yes. The report names the standards and national annex it applied, prints each formula with its clause, fills in the values and gives the unity check. A reviewer can follow every step, and you can recheck any number by hand. Have a look at the \u003Ca href=\"{examples}\">sample reports\u003C\u002Fa>.",{"q":300,"a":301},"Is it Windows only?","Yes. The four applications run on 64-bit Windows; there’s no Mac or browser version. XSpreadsheets runs in Excel and builds models for XFrame2D and XFEM4U, and the Word add-in needs Word for Windows (desktop). There’s no dongle.",{"q":303,"a":304},"Is it free for students?","Yes. Students get a free licence for one year with an e-mail address from a university or college that Struct4U recognises; otherwise, write to \u003Ca href=\"mailto:{education}\">{education}\u003C\u002Fa>. Output carries a watermark, and commercial use isn’t allowed. More on the \u003Ca href=\"{student}\">student licence\u003C\u002Fa> page.",{"title":306,"text":307},"Try it on your next calculation.","Download free and calculate for an hour straight away. Register in the program for {credit} of welcome credit. After that, top up or buy a licence.",1792702103927]