Mass Timber Design Automation Software for CLT and Glulam Manufacturers

The production floor of a modern CLT or glulam facility is a genuinely impressive operation. Multi-axis CNC routers machine timber elements to millimetre tolerances. Automated layup lines handle lamella assembly at scale. Computer-controlled presses apply precise gluing pressure across the full length of a structural member. The manufacturing process is fast, accurate, and largely automated.

The engineering design phase that precedes it is not.

Before any CLT panel or glulam beam enters the production floor, the engineering team must complete a sequence of work that the CNC machine is waiting on. Structural calculations for the specific element configuration. Shop drawings in the format the factory needs. Connection details checked against the relevant design standard. Documentation that travels with the order from engineering release to factory start.

Every one of those steps is currently manual at most CLT and glulam manufacturers. And with the mass timber market growing at 20 to 30% annually in the US alone, the gap between factory capacity and engineering throughput is widening.

Mass timber design automation software closes that gap.

The Engineering Bottleneck in CLT and Glulam Manufacturing

Custom glulam shapes and non-stock combinations carry 8 to 12 week lead times at most North American suppliers. CLT panels take 8 to 14 weeks from major suppliers. A portion of that lead time is production scheduling. A meaningful portion is engineering design.

The nature of glulam and CLT manufacturing involves frequent customer-specific deliveries. Every order carries a bespoke set of requirements: span length, cross-section, load specifications, connection geometry, fire resistance rating, and the specific design standard the project engineer has called up. Each of those variables changes the structural calculation. Each calculation change drives a change in the shop drawings. Each drawing change must be reviewed before the order is released to the CNC machine.

The structural behaviour of a glulam beam or a CLT panel is well understood. The design methodology under Eurocode 5, NDS, or AS1720 is established. The connection details for common typologies have been calculated hundreds of times across previous projects at the same firm.

But the engineering team still rebuilds the calculation from scratch for every non-standard order. Not because the logic has changed. Because the process requires it.

This is the bottleneck that mass timber design automation software is built to remove.

What Mass Timber Design Automation Software Does

The automation targets the specific category of engineering work in CLT and glulam manufacturing where the methodology is consistent but the project inputs vary.

A glulam beam design check under Eurocode 5 follows a defined sequence: bending, shear, deflection, lateral torsional buckling, bearing, and fire if required. The design code references do not change between orders. The section properties are drawn from the manufacturer's standard range. The variable is the span, the loading, and the connection geometry.

Mass timber design automation software captures that sequence once. When a new order arrives, the project-specific inputs, span, load, cross-section, end conditions, fire rating, are entered and the calculation runs automatically. The output is a complete structural calculation package in the firm's standard format, with every code reference and every intermediate check documented and ready for engineering review.

The same logic applies to CLT panel design. Bending and shear in the strong axis and weak axis. Vibration checks for floor panels. Fire resistance verification. Connection design at panel edges and at openings. Each check follows established methodology under the relevant standard. Each check currently gets rebuilt manually for every project. Each check can be automated once the logic is defined.

The shop drawings that accompany the calculation are generated in the same run. Panel layout, member dimensions, connection details, CNC machining notation in the format the factory already uses. The engineering team reviews and approves. The CNC program is ready to run.

The Difference Between Structural Design Software and Design Automation

Several software platforms support structural design for mass timber. CLT Toolbox provides calculators and transparent design methods for glulam and CLT beam, column, floor, wall, and fire designs to AS1720 and Eurocode 5 standards. Dlubal RFEM 6 supports CLT and glulam design to NDS, CSA O86, and Eurocode 5 with pre-loaded North American manufacturer libraries and direct Revit integration. SPEC Toolbox offers browser-based tools for CLT and glulam connection design to AS1720, Eurocode 5, NDS, and CSA O86 with certified data from more than 35 supply chain partners.

These are structural design tools. They help engineers perform the analysis and check the structural adequacy of a configuration. They require the engineer to set up each calculation, input the project data, and produce the output documentation for each order.

Mass timber design automation software is different. It does not help the engineer run the calculation. It runs the calculation for the engineer, from the project inputs, and produces a reviewable output automatically. The engineer's role shifts from calculation production to calculation review.

The distinction matters for a manufacturer processing multiple bespoke orders a week. A structural design tool speeds up a manual process. Design automation replaces the manual rebuild entirely.

What Changes for CLT and Glulam Manufacturers

The most immediate impact is throughput. Orders that currently wait in the engineering queue for two to three days while calculations and shop drawings are produced manually move to production release in hours. The CNC machine does not wait on the engineering team.

The second impact is scalability. More than 2,000 new mass timber projects are currently in the US design pipeline. For CLT and glulam manufacturers, that pipeline represents a sustained increase in bespoke order volume. Without engineering design automation, absorbing that volume means adding engineering headcount proportionally. With automation, the same engineering team handles significantly more orders per week.

The third impact is consistency. Manual calculation and drawing production introduces variation between engineers and between orders. Automated design applies the same methodology, the same code references, and the same documentation format on every order. The output is auditable and consistent regardless of order volume.

How struct.digital Builds Mass Timber Design Automation

struct.digital builds custom engineering design automation for CLT and glulam manufacturers, timber frame manufacturers, and structural component suppliers in the mass timber sector.

The process starts with a detailed mapping of the manufacturer's existing engineering design workflow. We document the product range, the structural calculation methodology applied to each element type, the design standards the engineering team works under, the shop drawing format the factory uses, and the sign-off process required before release to production.

The automation is then built around that specific workflow. For a glulam manufacturer, this might mean automated beam design checks under Eurocode 5 or NDS generating calculation packages and shop drawings for every new order configuration. For a CLT manufacturer, it might mean automated panel design checks and layout drawings generated from project-specific inputs. For a manufacturer producing both, the automation handles each product type with the appropriate methodology.

The engineering team retains full control. Every output is reviewed and approved by an engineer before release. The calculation logic is transparent and traceable. The shop drawing format matches the factory's existing standard. Nothing changes downstream. The time from order confirmation to engineering release is dramatically shorter.

If your CLT or glulam manufacturing operation is processing bespoke orders with a manual engineering design phase, that phase has a measurable cost per order and a measurable impact on lead time. The first step is understanding what automating it looks like for your specific product range.

Talk to struct.digital about mass timber design automation