# FRAME 2D > Static and Dynamic Analysis of Plane Frames with Linear and Non-Linear Capabilities Canonical: https://www.ramcadds.com/products/frame-2d Source: RAM CADDSYS product catalog — https://www.ramcadds.com/products Last verified: 2026-07-18 Categories: building-components FRAME 2D is a 2D structural frame analysis software for static and dynamic analysis of plane frames. It provides linear and non-linear analysis capabilities for steel, concrete, and timber frame structures, enabling engineers to determine internal forces, deformations, and dynamic response for planar structural systems. FRAME 2D is a plane-frame analysis program from RUNET Software — marketed as FRAME2Dexpress — supplied and supported in India by RAM CADDSYS. It runs static and dynamic analysis of portal frames, multi-bay frames, continuous beams, trusses and grillages, with loads combined per Eurocode 1. The FRAME2Dexpress + EC Design edition adds member design to Eurocode 2, 3 and 5, with reports exporting to Word and PDF. FRAME 2D by Runet Software is a structural analysis tool for 2D plane frame problems. It performs static and dynamic analysis of frame structures with linear elastic and geometrically non-linear capabilities. Supporting beam, column, and truss elements with various support conditions, FRAME 2D provides internal force diagrams, deformation plots, and dynamic modal analysis for everyday structural frame analysis tasks. ## Key points - FRAME 2D (FRAME2Dexpress) performs static and dynamic analysis of 2D plane frames — internal forces, displacements, and modal natural frequencies and mode shapes — from a single model. - A structure-prototype wizard with 21 ready-made frame types speeds up modelling, alongside free-form node/element input and built-in steel profile libraries. - Loads apply as nodal forces/moments and distributed element loads (uniform, triangular, parabolic), with combinations formed per Eurocode 1 using user-defined coefficients. - The FRAME2Dexpress + EC Design edition adds member design to Eurocode 2 (concrete), Eurocode 3 (steel), and Eurocode 5 (timber), including EC2 second-order column effects and EC3/EC5 buckling checks. - Calculation reports carry Eurocode clause references and export to Word and PDF for design submission and peer review. - RUNET Software develops FRAME2Dexpress; RAM CADDSYS supplies it in India with licensing, training, and technical support. - Static and dynamic analysis of 2D plane frames in a single program — internal forces, displacements, and modal results from one model. - Fast model setup using a structure-prototype wizard with 21 ready-made frame types, or free input of node coordinates and element connectivity. - Member design to Eurocodes in the EC Design edition — reinforced concrete (EC2), steel (EC3), and timber (EC5) verified in the same workflow. - Eurocode 1 load combinations with user-defined combination coefficients, so analysis and design follow a consistent code basis. - Built-in steel profile libraries and flexible cross-section input (by area/inertia or by rectangular, T, or L dimensions) speed up modelling. - Clear graphical output — bending moment, shear, axial, and displacement diagrams plus mode-shape plots. - Professional, code-referenced calculation reports exportable to Word and PDF for submission and documentation. - Distributed by RAM CADDSYS in India with licensing, training, and local technical support. ## Why engineers pick it - **Versatile Frame Analysis** — Analysis of portal frames, multi-bay frames, continuous beams, trusses, and grillages with beam, column, and truss elements in a single 2D model. - **Static and Dynamic Analysis** — Static analysis for dead, live, and combined Eurocode load cases plus dynamic modal analysis for natural frequencies and mode shapes. - **Eurocode Member Design** — The EC Design edition designs reinforced-concrete (EC2), steel (EC3), and timber (EC5) frame members in the same workflow, with load combinations per Eurocode 1. - **Clear Results Output** — Bending moment, shear, axial, and displacement diagrams plus mode-shape plots and code-referenced calculation reports exportable to Word and PDF for documentation. ## Capabilities - **Static Frame Analysis** — Computes internal forces and produces diagrams for displacements, bending moments, shear forces, and axial forces across the 2D frame. - **Dynamic (Modal) Analysis** — Calculates the eigenfrequencies (natural frequencies) and mode shapes of the framed structure, with graphical display of the mode shapes. - **Structure Prototype Wizard** — Builds models quickly from 21 ready-made frame types, or by direct entry of node coordinates and element connections. - **Cross-Section and Material Input** — Defines sections by their area and inertia properties or by dimensions (rectangular, T, or L), with built-in lists of nominal steel profiles. - **Eurocode Load Combinations** — Applies dead and live loads as nodal forces/moments and element distributed loads (uniform, triangular, parabolic), with optional self-weight and load combinations per Eurocode 1 using user-defined coefficients. - **Eurocode Member Design (EC Design edition)** — The FRAME2Dexpress + EC Design edition designs reinforced-concrete, steel, and timber frame members to Eurocode 2, 3, and 5 — including EC2 second-order column effects and EC3/EC5 buckling checks. ## Applications - **Portal and Multi-Bay Frame Buildings** — Analysis of steel or concrete portal frames and multi-bay building frames for moments, shears, and deflections under dead, live, and combined Eurocode load cases. - **Trusses and Mixed Frame-Truss Systems** — Modelling of trusses and frames containing tension-only members and hinged connections within a single 2D model. - **Continuous Beams and Grillages** — Static analysis of continuous beams and 2D grillage systems, including support reactions and force/displacement diagrams. - **Eurocode Member Verification** — Designing and checking reinforced-concrete, steel, and timber members of the analysed frame to EC2/EC3/EC5 in the EC Design edition. - **Dynamic Characterisation of Frames** — Determining natural frequencies and mode shapes of frame structures for vibration assessment and dynamic understanding. - **Engineering Documentation** — Generating code-referenced calculation reports in Word and PDF for design submissions, peer review, and project records. ## In depth ### Why use a dedicated 2D frame program for routine plane-frame checks? Because a portal frame, continuous beam, or truss check needs fast, code-compliant internal forces and a defensible report — not the overhead of a full 3D model — and FRAME2Dexpress is purpose-built for exactly that scope. FRAME2Dexpress models portal frames, multi-bay frames, continuous beams, trusses, and grillages within a single 2D structure, mixing beam, column, and truss elements — including end hinges and tension-only members — so mixed frame-truss systems don't need separate models or software. Load cases are combined per Eurocode 1 with user-defined coefficients, keeping the analysis on a consistent code basis with whatever member design follows. The same model returns both static results (displacement, bending moment, shear, and axial force diagrams) and dynamic (modal) results — natural frequencies and mode shapes — without switching programs. Output is built for documentation from the outset: diagrams, mode-shape plots, and calculation reports export to Word and PDF, and the FRAME2Dexpress + EC Design edition adds Eurocode clause references directly into the report for submission and peer review. ### How does FRAME2Dexpress take a frame from model to verified report? Modelling starts from a structure-prototype wizard or direct node/element entry, and results — analysis, and optionally Eurocode member design — flow into a single exportable calculation report. Models start either from the structure-prototype wizard's 21 ready-made frame types or from direct entry of node coordinates and element connectivity, with cross-sections defined by area and inertia properties or by rectangular, T, or L dimensions. Built-in lists of nominal steel profiles and menu-based material selection round out the input, and nodal loads plus distributed element loads (uniform, triangular, or parabolic) — with optional self-weight — are combined per Eurocode 1. In the FRAME2Dexpress + EC Design edition, the same model carries through to member design: reinforced-concrete members are checked to Eurocode 2 (including second-order column effects), steel members to Eurocode 3 (cross-section resistance and buckling), and timber members to Eurocode 5, all referencing the relevant Eurocode clauses in the final report. Results — bending moment, shear, axial, and displacement diagrams, mode-shape plots, and the design calculations — export together to Word or PDF for a single, submission-ready package. ## Design codes - **EN (Eurocode)** — Eurocode 0 (EN 1990) — basis of design / load combinations / Eurocode 1 (EN 1991) — actions, load combination coefficients / Eurocode 2 (EN 1992) — reinforced concrete member design (§5.8.3 second-order column effects, §6 ULS) / Eurocode 3 (EN 1993) — steel member design (§6.2 cross-section resistance, §6.3 flexural & lateral-torsional buckling) / Eurocode 5 (EN 1995) — timber member design (§6 ULS, §6.3 stability) ## Questions ### What is FRAME2Dexpress used for? It is used for static and dynamic analysis of 2D (plane) framed structures — portal frames, multi-bay frames, continuous beams, trusses, and grillages — computing displacements, bending moments, shear and axial forces, plus natural frequencies and mode shapes. ### Who develops FRAME2Dexpress? It is developed by RUNET Software, a developer of Eurocode-based structural engineering software for concrete, steel, timber, and masonry. ### Does FRAME2Dexpress design members to a code, or only analyse? The base FRAME2Dexpress performs analysis (with Eurocode 1 load combinations). The FRAME2Dexpress + EC Design edition additionally designs frame members to Eurocode 2 (concrete), Eurocode 3 (steel), and Eurocode 5 (timber). ### Which design codes does the EC Design edition support? Eurocode 2 for reinforced concrete (including second-order column effects per §5.8.3), Eurocode 3 for steel (cross-section resistance §6.2 and buckling §6.3), and Eurocode 5 for timber (ULS §6 and stability §6.3), with load combinations per Eurocode 1 and National Annex provisions. ### Can FRAME2Dexpress do dynamic analysis? Yes — it computes eigenfrequencies (natural frequencies) and mode shapes for the frame, with graphical display of the mode shapes. A dedicated response-spectrum seismic design module is not stated on the vendor site. ### Does it perform P-delta or non-linear analysis? The RUNET documentation describes static and dynamic (modal) analysis and does not advertise a general P-delta or geometrically non-linear solver; second-order effects are addressed within the Eurocode 2 column design checks of the EC Design edition. Confirm with the vendor if non-linear frame analysis is required. ### How are loads and load combinations handled? You can apply nodal forces and moments and element distributed loads (uniform, triangular, or parabolic), include self-weight optionally, and form load combinations per Eurocode 1 with user-defined combination coefficients. ### How are cross sections and materials defined? Sections can be defined by their area and inertia properties or by dimensions (rectangular, T, or L). The program includes lists of nominal steel profiles with their properties and lets you pick material properties from a menu. ### How quickly can I build a model? A structure-prototype wizard offers 21 ready-made frame types, or you can define the structure by entering node coordinates and element connectivity. Elements with end hinges, tension-only elements, and 2D grillages are supported. ### What output and reports does it produce? It produces graphical diagrams for displacements, bending moments, shear and axial forces, mode-shape plots, and detailed calculation reports — with Eurocode clause references in the design edition — exportable to Word and PDF. ### What platform does it run on? FRAME2Dexpress is a Windows desktop application distributed by RUNET Software. ### Is FRAME2Dexpress available in India through RAM CADDSYS? Yes. RAM CADDSYS distributes RUNET Software products in India and can provide licensing, training, and technical support for structural engineering firms. Contact RAM CADDSYS to confirm the exact edition (base analysis vs. EC Design) and current pricing. --- Full page: https://www.ramcadds.com/products/frame-2d Pricing is quoted per territory and is deliberately not published. Talk to us: https://www.ramcadds.com/contact