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Timber & Wood Design Software for CLT, Mass Timber & Light-Frame Structures

Model, analyze and design CLT panels, glulam, sawn lumber and SCL, plus light-frame shear walls and floor diaphragms, in one 3D model. GSE™ Timber checks every wood element to NDS and CSA O86 and shows the limit states in colour on the model.

Design codes
  • USASCE 7
  • USNDS ASD & LRFD
  • CANBCC
  • CACSA O86
  • 40 years of engineeringTrusted by structural engineers since 1986
  • One model, 4 materialsWood, steel, concrete & aluminum together
  • US & Canadian codesNDS and CSA O86 in one program
  • Support includedUpdates and technical support with every subscription

Built for structural engineers

Timber & Wood Structural Design in One Multi-Material 3D Model

GSE™ Timber is the wood design module of GSE™ General Structural Engineering, a 3D structural analysis and design program for light-frame wood, mass timber and CLT buildings. Model sawn lumber, glulam, SCL (LVL, PSL, LSL), CLT panels, shear walls and diaphragms in one environment.

GSE is multi-material, so wood works with steel, cold-formed steel, reinforced concrete and aluminum in the same model. Steel transfer beams, concrete podiums and cores, and aluminum elements are analyzed together with the wood structure, and each material is checked to its own code at the same time. No exporting reactions between programs.

Analyze with static, P-Delta, nonlinear, buckling, seismic and dynamic time-history analysis, and design wood members to NDS (ASD & LRFD) and CSA O86, with limit states shown in colour on the 3D model.

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GSE Timber 3D structural analysis and design of a wood and CLT building

Mass timber

CLT & Mass Timber Design Software Panels, Glulam & SCL in 3D

Model cross-laminated timber (CLT) floors and walls as true 3D panels, with glulam beams and columns and SCL members, in the same model. GSE™ Timber captures how mass timber panels actually behave, then designs every element to NDS and CSA O86.

  • CLT Panel Modeling

    Model CLT floor and wall panels directly in the 3D model, with full control of material and geometric properties.

  • Custom CLT Layer Layups

    Define each layer’s thickness and orientation to match the manufacturer’s panel layup.

  • Orthotropic Panel Behaviour

    Simulate the true anisotropic properties of cross-laminated panels, with different stiffness in each direction.

  • Inter-Panel Slip

    Simulate slip between adjacent panels with advanced analytical functions for realistic floor and wall behaviour.

  • Glulam & SCL Member Design

    Design glued-laminated timber beams and columns and LVL, PSL and LSL members from extensive material libraries.

  • Fire Resistance & Deflection

    Verify fire resistance and deflection of mass timber elements, with limit states shown in colour on the 3D model.

Wood, steel, concrete & aluminum in one model

GSE™ covers every major structural material. Model wood and CLT together with steel and cold-formed steel, reinforced concrete slabs and foundations and aluminum, analyze everything as one structure and check each material to its own code. No exporting reactions between programs.

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Webinar Timber & CLT Structural Design Workflow in GSE™ Timber

We respect your privacy. Your information is not shared.

Free demo video

A complete walkthrough of GSE™ Timber, from 3D modeling of wood, CLT and light-frame structures to NDS and CSA O86 design. Register today to receive your free demo video directly in your inbox.

In this video

  1. How CLT panels, glulam and sawn lumber are modeled in one 3D model
  2. How bearing walls and shear walls are generated parametrically
  3. How wood members, walls and diaphragms are checked to NDS and CSA O86

Light-frame wood

Wood Bearing & Shear Wall Design with Automated Parametric Generation

Design light-frame wood bearing walls, shear walls and floor diaphragms without building the analysis model by hand. Enter wall outlines, openings, sheathing and anchors, and GSE™ Timber's automated parametric generation creates the complete engineering model for you. Every wall is then checked to NDS and CSA O86, in one 3D model.

Building on a concrete podium or a steel transfer level? Model it in the same project. The wood storeys, the concrete podium and the steel framing are analyzed together, with each material checked to its own code.

  • Automated parametric generation of the engineering model based on walls, openings, sheathing and anchor parameters
  • Bearing wall and shear wall design in the same model
  • Segmented and perforated shear wall design methods
  • Hold-downs and continuous rod anchorage systems
  • Lateral resistance and deflection checks for every wall
  • Floor diaphragm design
  1. Draw the wall outlines

    Lay out the walls, then copy wall outlines to generate structure faces and multiple storeys efficiently.

  2. Place doors and windows

    Insert window and door openings into each wall from the built-in opening library.

  3. Assign sheathing and anchors

    Set sheathing, hold-downs and continuous rod anchorages for each wall.

  4. Automated parametric generation and design

    GSE™ generates the engineering model automatically, runs the analysis and checks every bearing wall, shear wall and diaphragm, with results shown on the 3D model.

Code-based design

Wood Member Design to NDS & CSA O86 Sawn Lumber, Glulam, SCL & Joists

Design every wood beam, column, joist and panel in the model to NDS (ASD & LRFD) and CSA O86, with strength, fire and serviceability checks. Steel, concrete and aluminum members in the same model are designed to their own codes at the same time.

  • Wood Products & Sections

    • Rectangular sawn lumber
    • Glued-laminated timber (glulam)
    • Structural composite lumber: LVL, PSL and LSL
    • Built-up sections and custom sections
    • Open-web engineered joists and wood panels
    • Guided material selection by section size, species and grade
  • Strength Checks

    • Bending resistance
    • Compression and tension resistance
    • Shear and bearing resistance
    • Combined axial and bending resistance
    • NDS ASD & LRFD and CSA O86 in one program
    • Limit states shown graphically on the 3D model or numerically
  • Fire, Deflection & Vibration

    • Fire resistance verification of wood members
    • Deflection checks against comprehensive criteria
    • Floor vibration limit state for sawn lumber joists
    • Wood truss vibration verification

Designing a single beam or column? The SAFI™ Wood Calculator designs individual wood beams and columns without building a full 3D model.

Explore the Wood Calculator

Product information

Explore GSE™ with Our Engineering Team

Get in touch with our specialists to see how GSE™ fits your projects, with product information, pricing and a personalized demonstration on request.

  1. Product features and licensingModules, design codes and license options for your team.
  2. Tailored to your structuresBuildings and structures in steel, wood, concrete or aluminum.
  3. Optional live demo and technical Q&ASee GSE™ on a model similar to yours and ask your questions.
Trusted engineering partner since 1986

Prefer to talk? Call toll‑free 1 800 810‑9454

Request GSE™ Product InformationMulti-material steel, wood, concrete and aluminum design software

We respect your privacy. Your information is not shared.

Featured end-user projects

Timber Projects Designed with GSE™ Wood, CLT & Hybrid Structures

From light-frame wood buildings to CLT and hybrid structures, see what structural engineers analyze and design with GSE™ Timber.

Trusted by engineering firms since 1986 for wood, mass timber and multi-material structures.

Light-frame woodCLT & mass timberGlulamHybrid structures

Multi-material design

Steel, Wood, Concrete & Aluminum in One Single Environment

With GSE™, steel, timber, concrete and aluminum live within a single model. Multi-material analysis and design run simultaneously, in one unified platform.

  • One 3D model for every material, including slabs and foundations
  • One analysis for the whole structure
  • Every member code-checked to its own material standard, simultaneously
Multi-material 3D building model analyzed and designed in a single GSE environment
  • Wood & CLT Design Software

    CLT, mass timber and light-frame wood design, with automated parametric wall generation, custom lay-ups and orthotropic CLT behaviour.

    NDSCSA O86
    You are here
  • Steel Design Software

    Steel and cold-formed steel design, with member optimization and the Direct Analysis Method.

    AISC 360CSA S16AISI S100CSA S136
    Explore steel design
  • Concrete Slab & Foundation Design

    Reinforced concrete design, with slab and foundation design, punching shear, design strips and slab-on-grade analysis.

    ACI 318CSA A23.3
    Explore concrete design
  • Aluminum Design Software

    Aluminum structural analysis and design for aluminum members and structures.

    AA ADM 2020CSA S157
    Explore aluminum design

Technical specifications

GSE™ Timber Technical Specifications Codes, Analysis & Wood Design Features

Everything GSE™ Timber supports for wood, CLT and light-frame structures, at a glance.

GSE Timber technical specifications: design codes, wood products, modeling, analysis and design checks
CategoryGSE™ Timber
Wood design codes
USNDS ASDUSNDS LRFDCACSA O86
National Design Specification (NDS) for Wood Construction and CSA O86 Engineering design in wood.
Loads & load combinations
USASCE 7CANBCC 2020
  • Automatic load combinations: ULS, SLS, fatigue and fire
  • Live load reduction
  • Seismic and wind loading
  • Static equivalent seismic loads
  • Spatial objects and loads
Wood products & sections
  • Rectangular sawn lumber
  • Glued-laminated timber (glulam)
  • SCL: LVL, PSL and LSL
  • Cross-laminated timber (CLT) panels
  • Built-up sections
  • Custom sections defined and analyzed
  • Open-web engineered joists and wood panels
  • Material libraries with guided selection by size, species and grade
CLT & mass timber
  • CLT wall, floor and roof panel modeling with full material and geometric control
  • Custom layer layups (thickness and orientation)
  • Orthotropic panel behaviour
  • Inter-panel slip modeling with advanced analytical functions
  • Calculation of CLT design properties
  • Real-time 3D rendering of stresses, displacements and failure modes
Bearing walls, shear walls & diaphragms
  • Automated parametric generation from walls, openings, sheathing and anchor parameters
  • Wall outlines copied to generate structure faces and storeys
  • Segmented and perforated shear walls
  • Hold-downs and continuous rod anchorages
  • Lateral resistance and deflection checks
  • Floor diaphragm design
  • Create and store window and door openings in a library
Analysis
  • 3D finite element analysis with plates and shells
  • Linear static and P-Delta
  • Nonlinear analysis and nonlinear springs
  • Buckling analysis
  • Response spectrum and frequency analysis
  • Seismic time-history analysis
  • Animated results and interactive result tables
Wood design checks
  • Bending, compression and tension
  • Shear and bearing
  • Combined axial and bending
  • Fire resistance
  • Deflection criteria
  • Vibration limit state for sawn lumber floor joists
  • Truss vibration verification
  • Limit states shown in colour on the 3D model, or numerically in spreadsheets and reports
Multi-materialSame model as wood
SteelUSAISC 360USAISI S100CACSA S16CACSA S136
ConcreteUSACI 318CACSA A23.3
AluminumUSAA ADM 2020CACSA S157
Steel, cold-formed steel, reinforced concrete slabs and foundations, and aluminum, analyzed and designed together with the wood structure.
Modeling & interface
  • Ribbon interface with DirectX 11 / OpenGL 2.0 graphics
  • Automatic mesh generation
  • Construction lines, move, rotate, extrude and subdivide
  • Persistent groups and renumbering
  • Customizable units
Reports & exports
  • Editable Word and Excel reports
  • Exports to SAFI report, Excel, Access and ASCII

How to get GSE™ Timber

Build Your GSE™ Package Choose Your 3D Analysis, Add Design Modules

GSE™ Timber is a design module of GSE™ General Structural Engineering. Choose your 3D analysis, add the Timber module, then add any other material or calculator you need.

  1. Analysis

    Choose your 3D analysis

    • Standard3D Structural AnalysisFinite element analysis, P-Delta and seismic analysis.
    • Advanced 3D Structural AnalysisEverything in 3D Structural Analysis, plus catenary cables, spatial objects and loads, and nonlinear springs.
  2. Design modules

    Add your design modules

    • GSE™ TimberWood, CLT, mass timber and light-frame structures.
    • GSE™ SteelSteel and cold-formed steel structures.
    • GSE™ ConcreteReinforced concrete, slab and foundation design.
    • GSE™ AluminumAluminum members and structures.
  3. Calculators

    Add calculators

  • 1-year subscription
  • Software updates included
  • Technical support included

Get started with GSE™

Ready to Design Your Next Wood Structure with GSE™ Software?

Model, analyze and design steel, wood, concrete and aluminum structures to US and Canadian codes, all in one program.

Prefer to talk? Call toll‑free 1 800 810‑9454