A New Era in Structural BIM Design:

ProtaStructure 2021 is a fantastic new release representing a major milestone in the evolution of our vision and commitment to you.

ProtaStructure 2021 takes advantage of the latest technology platforms and 64-bit processing and architecture.

It has been created to provide a more seamless, fluid and optimized experience.

We hope you enjoy the many new features, enhancements, and experiences that are awaiting you in ProtaStructure 2021.

What Is New?


Structural BIM Design Technology for a Connected World

Fast multi-material building modelling using physical structural members

State-of-the-art structural analysis methods

Economical and reliable design

Fully automated engineering drawings and fabrication detailing

Complete quantities take-off for costing and comparison

Leading BIM Integration for project coordination

ProtaStructure is an innovative BIM solution for structural engineers to model, analyze and design buildings quickly and accurately.

From one central model, easily compare different schemes and automate your steel and concrete design, significantly reducing project delivery time.

Produce high quality drawings and all design documentation from ProtaStructure automatically using included ProtaDetails and ProtaSteel.

Seamlessly coordinate projects with intelligent BIM integration.

ProtaStructure saves time and increases business profitability.

At First Glance

Fast project delivery with fully integrated Concrete and Steel design from one central structural BIM design model.

Easy, quick and intuitive physical modelling with Multiple Window Views and Dynamic Input

Multiple Window Views

64-bit Architecture and Enhanced Technology Platform.

3D finite element analysis with state-of-the-art analytical model with extensive analysis options and shell element support for floors and shearwalls.

Advanced analysis techniques including Linear Elastic Analysis, Equivalent Static Earthquake Load, Response Spectrum Analysis, Time-History, Pushover, Concurrent cracked and uncracked analysis, Staged Construction, P-Delta, Temperature Difference, and Seismic Basement and Isolator considerations.

Advanced Analysis 1
Advanced Analysis 2

Design to a range of leading international codes including specialist seismic requirements.

Seismic assessment methodologies for Performance Based Design or Retrofit of buildings using Lenear Elastic, Nonlinear Push over or Time-History analyses.

Fully automated RC detailing into your drawing sheets. Manual drafting using smart rebars. Change management and dynamic quantity tables together with Fast engineering macros including retaining wall, stair, pool, pile analysis, design and detailing.

Fully Automated RC Detailing

Automated steel connection design using IntelliConnect, full steelwork engineering drawings together with comprehensive part numbering and shop detailing for fabrication.

Automated steel connection design using IntelliConnect 1
Automated steel connection design using IntelliConnect 2

Industry leading BIM integration for starting, coordinating and sharing models

Industry Leading BIM Integration

Interactive user experience with extensive in-product learning, contextual help, live updates and dedicated technical support from Professional Engineers.

Seismic Analysis and Design Capabilities

ProtaStructure provides engineers with comprehensive tools to design and detail buildings quickly and economically to meet rigorous earthquake standards including US and EC codes of practice.

Wide Coverage of Seismic Codes

ProtaStructure supports a wide range of seismic codes including IBC, UBC, EC8, NSCP, SNI, Thai, Indian and Turkish standards.

Seismic Parameters and Response Spectra

Elastic and design response spectra are calculated automatically using code-specified parameters. Sitespecific spectra can also be introduced. Mass sources are automatically calculated including consideration of varied live load participation.

Equivalent Static Earthquake Loads

Static earthquake loads are automatically calculated and applied at story levels. Multiple diaphragms and accidental eccentricities are taken into consideration.

Response Spectrum Analysis

Mode superposition analysis can be used where static approach is not applicable. Modal results are combined with CQC. RSA base shear is automatically scaled to Equivalent Static results. Cumulative mass participation of modes is automatically calculated.

Response Spectrum Analysis 1 Response Spectrum Analysis 2

Diaphragm Modeling and Story Meshing

ProtaStructure has smart features for automatically detecting and defining intelligent rigid diaphragms. Multiple towers with discrete independent floors, discontinuous, stepping, sloping slabs and openings are all considered. Any floor can be selectively meshed and assigned as a flexible diaphragm.

Diaphragm Modeling and Story Meshing 1
Diaphragm Modeling and Story Meshing 2 Diaphragm Modeling and Story Meshing 3

Two Stage Analysis for Upper and Lower Structure

An automated two stage analysis is performed in one-go for buildings with rigid basements. Different mass sources for upper and lower structure are automatically considered.

Consider Cracked and Uncracked Sections in One Analysis Run

Cracked and uncracked section properties can be simultaneously used in the same analysis for different load cases. Code modification defaults can be automatically applied to section properties.

Vertical and Horizontal Irregularities

ProtaStructure has powerful features to assess building irregularities in accordance with earthquake code requirements. Floor Torsion, Diaphragm Discontinuity, Mass, Stiffness, Weak Storey and Non-parallel system irregularities are all checked, and any required penalties are applied.

Vertical and Horizontal Irregularities

Strong Column-Weak Beam Checks

Tedious Strong Column-Weak Beam checks are automated at every joint. Joint checks are summated bi-directionally at every floor to ensure building collapse mechanisms perform in meeting accepted code provisions.

Joint Shear Checks

Overlooking joint shear can potentially cause catastrophic failure of buildings during earthquake events. ProtaStructure automatically detects Confined or Unconfined joints and checks against brittle failure.

Joint Shear Checks

Ductile Member Design and Detailing

Columns, walls, and beams are designed to special ductility requirements. Automated confinement of beam and column critical sections, wall end zones (boundary elements), wall design envelope, capacity shear design and much more are automatically considered.

Diaphragm Integrity and Load Transfer Checks

Transfer of inertia loads between slabs and lateral load resisting members including shearwalls and collectors beams is automatically verified. For flexible diaphragms, in-plane shear, tension and compression stresses are checked to prevent diaphragm failure.

Wall Coupling Beams

Special attention is provided for coupling beams. Different cracked section properties can be defined. The wall-beams assembly is checked for coupled wall effectiveness.

Seismic Isolators

Seismic isolators can be inserted anywhere on the structure for different seismic isolation scenarios. Both upper and lower structure design can be performed in ProtaStructure using target earthquake spectra. Drift of the structure and isolator displacements are also reported as a part of the design.

ProtaStructure for Performance-Based Design and Building Assessment

Prota provides unique tools for engineers to carry out performance-based building assessment.

Nonlinear Fiber Analysis of Sections

Column, beam, and Wall sections can be modeled with fiber elements using distributed plasticity and analyzed with state-of-the-art numerical techniques to derive the Moment-Curvature relationships.

Force-deformation relationships for integration points are obtained from detailed fiber section analysis.

Nonlinear Fiber Analysis of Sections

Nonlinear Static Pushover

Single Mode Static Pushover analysis is performed using ProtaStructure - OpenSees integration. Parameters such as the number of steps and target displacements can be controlled by the user.

After the analysis, the Capacity Curve is obtained. Users can specify the monitored node for which the curve will be generated. Results can be examined at any desired step. A detailed performance assessment report is generated afterwards.

Nonlinear Static Pushover

Nonlinear Time-History Analysis

Nonlinear Time-History analysis can be performed using ProtaStructure - OpenSees integration.

User selected multiple ground motions can be applied simultaneously in X and Y directions. Ground motion application direction is rotated by 90 degrees, and analyses are repeated.

Ground motion records are automatically scaled by ProtaStructure to your design requirements using the simple scaling method between 0.2T and 1.5T.

Analysis results from multiple ground motion sets are automatically post-processed. The average values of absolute maximum responses are extracted and used to prepare detailed performance assessment reports.

Nonlinear Time-History Analysis

Design Codes

Structural engineers around the world like to employ their own local approaches to both design and detailing. At Prota we understand this which is why we offer both a broad range of leading international codes as well as provide specific customization to suit your local requirements.

Reinforced Concrete Design Codes

Eurocode 2 Base Code and National Annexes
United Kingdom

Steel Design Codes

AISC360-10 (LRFD, ASD)
TSC 2016 (LRFD, ASD)
Eurocode 3 Base Code and National Annexes
United Kingdom

Seismic Analysis and Design Codes

IBC 2018
NSCP 2015
DPT 1301/1302-61
TDY 2007
TBDY 2018
Eurocode 8 Base Code and National Annexes

Loading and Wind Loading Codes

BS 6399
TS 498
AASCE 07-10
MS 1533
DPT 1311-50
NSCP 2015
Eurocode 1 Base Code and National Annexes
United Kingdom


With its focus on structural BIM modelling, ProtaStructure allows physical RC, Steel and Composite structural members to be easily, quickly and intuitively defined in one model.

Structural BIM Modelling

Instantly create models using smart DXF import to extrude gridlines, beams, columns, slabs and shearwalls directly from structural or architectural drawings or make use of physical BIM links with IFC’s, Revit or 3D DXFs to establish complete models with a click.

Use dynamic input to rapidly create Concrete beam, columns, slabs, foundations and shearwalls and custom shaped corewalls and columns. Define openings, drops and physical set out to exactly define your project.

Use real structural steel elements including truss, purlin, brace, girt, sag rods with flexible parametric macros. Specify your splice locations on steel columns, beams and trusses.

Real Structural Steel Elements 1
Real Structural Steel Elements 2

Define conventional, waffle, precast and flat slabs with curved and irregular edges and drop head panels.

Create Raft, Piled-Raft, Pad Base, Pile Cap and Combined foundations together with Strip Footings and Foundation Beams for complete foundation design. Set foundations up at any level.

Build custom trusses using the truss editor and save them in the library for later use. Define multiple horizontal and vertical braces and use flexible purlin layout generators.

Truss Editor

Make use of the new general purpose frame member to model irregular arrangements with ease.

Frame Member

Merge different model parts together allowing concurrent modelling for rapid project creation.

Fast generation of multiple storeys with similar storey feature.

Multiple Storeys with Similar Storey Feature

Simultaneously work on different floor plans and 3D model with multiple window system. Easy access to parts of model with element Filters.

Define different materials and reinforcement steel grades on floor and element basis throughout the project.

Create Arc and multi-segment axes/beams, sloping members and structures with non-orthogonal plans.

Non-Orthogonal Plans

Anchor fixed column and beam positions to corners and edges. When section sizes change, anchored positions are retained.

Model sloping slabs, beams, columns and sloping and tapered shearwalls easily using planes or multi gridlines.

Assign flexible user-defined supports including springs under columns and shearwalls.


Prota’s unique loading processes are highly automated and accurate, saving you time and driving efficient design.

Automatically decompose loads from plate, ribbed and waffle slabs, using Yield Lines and/or Finite Elements Methods. Apply point, line and patch loads to slabs.

Yield Lines and/or Finite Elements Methods 1 Yield Lines and/or Finite Elements Methods 2

Apply user-defined Point Loads, Moments and Span Loads to columns and shearwalls.

Check model loads, finishes, elements sizes and properties using color coded visual interrogation.

Color Coded Visual Interrogation

Automatic calculation of code-based seismic loads using Equivalent Static and Response Spectrum Analysis methods.

Automatic Wind Load Calculation to EN1991-4(2005) BS6399-2(1997), ASCE7(2010) & MS1533(2002) and Thailand codes


Structural analysis is performed by specifically developed 64-bit 3D finite element solver and state-of-the-art analytical model.

64-bit 3D Finite Element Solver

Rapid analysis using multi-cores and pre-processing technology.

Analysis of slab systems independently or integrated with the structure by using finite elements.

Analysis of Slab Systems 1
Analysis of Slab Systems 2

Automatic rigid links, rigid zones and asymmetrical end-releases on frame members.

Analysis of shearwalls and custom shaped corewalls with or without openings using shell elements, mid-pier and single-pier models.

Analysis of Shearwalls and Custom Shaped Corewalls

Staged Construction Analysis with detailed options, P-Delta analysis and definition of equal/gradient temperature differences. Special Seismic Analysis considerations.

Soil-Structure Interaction Analysis for all types of foundations.

Soil-Structure Interaction Analysis

Sophisticated Post Analysis checks for reviewing code compliance including deflections.

Real-time visualization of stress contours, deformations, force and moment diagrams using the full-featured Analysis Post-Processor.


Design is the very essence of what we do as Structural Engineers. Providing elegant, practical solutions to design is at the heart of ProtaStructure


Interactive and batch concrete beam and column design including reinforcement optimizations and design grouping.

Biaxial design and reinforcement optimization of columns and shearwalls with any section. Generation of interaction diagrams and capacity reports for easy design tracking.

Biaxial Design and Reinforcement Optimization of Columns

Design of shearwalls and slabs using conventional or mesh reinforcement.

Automatically create reinforcement layouts for columns and corewalls with “I, H, L, T, U, E, +” sections

Code-based automatic containment tools to specify link and tie-bar layouts compatible with column sections of any shape and size.

Design economically and accurately by including column sections in FE mesh and considering openings, drops and loads on slabs in FE analysis.

Design of flat, ribbed, waffle slab systems using analytical and finite elements methods and automatic punching checks.

Selection of the most efficient steel profile based on active codes.

Automatic design of steel connections using IntelliConnect and ability to reuse at all similar joints

Integrated meshing and analysis of slab and foundation systems with the building model.

Advanced documentation tools including ordered report sets, integration of external reports, table of contents, smart notification system (summary of warning, error and information messages).

Advanced Documentation Tools

Design pad bases, pile caps, strip foundations, rafts, piled rafts and combined foundations using analytical and finite element methods.

Analytical and Finite Element Methods

Combine different models to cater for shared foundation systems.

Use different subgrade coefficients and varied thicknesses for within raft foundations.

ProtaDetails – RC Detailing and Component Design

Engineers have longed for the ability to automatically create all RC detailing from the design, intuitively laid out into drawing sheets, and complemented with full drafting and editing capability.

RC Detailing and Component Design

Automatically produce details from your ProtaStructure design models into your drawing sheets, only with one click.

Carry out all your drafting using standard CAD drawing commands without the need for other CAD software. Features include extensive command-line support and customization, DWG/DXF support, dimensions, layers, style, intelligent undo/redo and much more…

Generate dynamic quantity tables with full bar bending schedules, which are updated instantly when changes occur.

Customize drawings with your own title blocks with auto referencing including all project and sheet information.

Customize Drawings with Your Own Title Blocks

Make use of smart rebar library, intelligent detailing items and tools to perform semi-automatic structural drafting for the cases where a full automation is not possible.

Automatically or manually truncate beam elevations to fit any sheet layout.

Convert your old reinforcement drawings to smart rebars and instantly provide steel quantity take off.

Insert details with different drawing scales side-by-side on the same sheet. Smart scaling system automatically manages all relevant texts, object sizes and dimensions.

Automatically update design detail changes from ProtaStructure as they occur.

Automatically Update Design Detail Changes 1 Automatically Update Design Detail Changes 2

Use ProtaDetails growing library of intelligent macros to design and detail other components in your projects including;

Automated analysis, design and detailing of cantilever retaining walls.

Design of RC Stairs, Pile Caps, Corbels, Steel Scaffold Systems, Swimming Pools and more including all details, quantities and calculation reports.

Design your piles using detailed soil profiles for pile working load assessment, iterative non-linear lateral pile analysis and pile section design.

Produce engineering details for other components including Culverts, Retrofit Walls, Foundation Pits, Pad Bases, Walls, Continuous RC Beams and more.

ProtaSteel – Steel Connections and Detailing

Nowadays clients want practical, complete steel details and automated connection design to drive on-time project delivery and cost control.

ProtaSteel is the all-in-one steel detailing solution for engineers, fabricators and drafting professionals.

Steel Connections and Detailing

Communicate ProtaStructure models seemlessly to ProtaSteel including all physical elements and analytical results

Use our unique IntelliConnect to rapidly automate connection design with a focus on constructability.

Easily model and detail any steel connection using Fully-featured Parametric Connection Libraries.

Fully-featured Parametric Connection Libraries

See the step-by-step connection design calculations with detailed code clause referencing.

Insert ancillary steel including sag rods, purlins, girts, braces, stairs, chequer plate, railings, secondary beams and eaves beam to complete your model.

Automatically detect all clashes between parts.

Automatically Detect All Clashes

Create macro presets for any connection or modeling macro using your favorite settings and company standards. Seamlessly update any changes in ProtaStructure models to ProtaSteel

Fully-flexible Automatic Part and Assembly Numbering that intelligently manages part-marks on subsequent revisions of the model.

Automatically prepare all General Arrangement Drawings, Truss Details, Connection Details, and Shop Drawings.

General Arrangement Drawings, Truss Details, Connection Details, and Shop Drawings

Full cutting lists provide insight into efficient procurement and cost control. Intelligent data communication with IFC’s, NC’s, and Tekla Structures.

Easily create your own user-defined connections using general purpose tools like plate, bolt, weld, section, cut, chamfer and fillet and use these connections at similar joints.

Plate, Bolt, Weld, Section, Cut, Chamfer and Fillet

Increased productivity with unique connection macros including truss apex, truss-column, steel beam to concrete, and embedded steel connections.

Automatically compile comprehensive design reports and track connection design status with model color coding.


Leading Structural BIM Collaboration

Structural BIM at Its Core

ProtaStructure is natively designed with structural BIM in mind. We use intelligent physical objects to drive modeling, design, coordination and documentation.

Structural BIM at Its Core

Support for BIM Industry Standards

ProtaStructure supports both import and export of IFC and 3D DXF files enabling professionals to share the models between ProtaStructure and other leading BIM platforms including Autodesk Revit, ArchiCAD, and AllPlan.

Bi-directional Integration with Autodesk Revit

Prota has developed bespoke integration with Autodesk Revit to facilitate direct, seamless model coordination, providing tools to roundtrip and synchronize changes as they occur. Explore revisions with color-coded visualization and interactive change logs. Take advantage of new family mapping functionality providing you with a tailored experience to suit your BIM work processes and standards.

Bi-directional Integration with Autodesk Revit

Create Models from 2D Information

Modelling processes can even start with our DXF import where we can convert and extrude drawings into Physical ProtaStructure models. Line and face elements like column, beam, walls and slabs in 2D key plans and 3D DXF files can be quickly converted to 3D ProtaStructure models. Architectural drawings can be overlaid against structural floors to aid coordination.

Create Models from 2D Information 1 Create Models from 2D Information 2

Analysis Model Collaboration

We understand that engineering offices use a range of different analysis and design tools to get the job done. Many firms and checking authorities also require structural engineers to crosscheck and validate analysis results against other accepted platforms. ProtaStructure allows you to easily achieve this with open intelligent model links to OpenSees, ETABS™, SAP2000™, LUSAS™, and more.

Output Reports and Drawings to Industry Standard Formats

Create and share customizable and highly visual calculation reports featuring Microsoft Office and PDF export abilities.

Detail drawings are fully compatible with industry standard DXF and DWG formats. All drawings in ProtaStructure follows best drafting practices and provide full layer, style and scaling flexibility.

Bespoke templates customized to suit your company drafting preferences can also be easily established and re-used for any project. Additional formats including 3D DXF, STL and image files are also available.