Dowel Laminated Timber (DLT) from StructureCraft is a mass timber product that can be used for floor, wall, and roof structures. These structural panels manufactured from standard dimensional lumber use hardwood dowels to laminate pre-milled boards together on edge, creating a panel that is particularly efficient for horizontal spans. Laminae can be custom-molded to client preferences.
Advantages:
All-wood. No Glue. No Nails.
- DLT is the only all-wood mass timber product
- DLT produces almost no VOCs or off-gassing and sequesters the most carbon by unit weight of any mass timber product on the market
- With no metal fasteners, DLT panels are processed using CNC machinery and allow for easy onsite modifications if needed
- ~3650lbs CO2 sequestered per ton, wood is the only renewable structural material
- Virtually no site waste, due to optimized offsite prefabrication
Structural Efficiency
- Greater structural efficiency for one-way spans – all wood fiber goes in the direction of the primary span
- Single spans up to 60ft for roofs, 32ft for floors. Transverse (weak axis) cantilevers are easily achievable with internal reinforcement
Architectural Flexibility
- A wide variety of surface profiles can be integrated inexpensively into the bottom surface of the panel
- An acoustic profile can achieve noise reduction objectives while keeping the wood exposed
- DLT's “fineline”, textured aesthetic highlights the beauty of wood
- StructureCraft’s automated coating line allows for a variety of sealer and stain coatings to be inexpensively shop-applied to the exposed side of panels
- DLT is made with a variety of wood species including SPF, Douglas Fir, Hemlock, Spruce, and Western Red or Yellow Cedar
Economically Viable
- Lower manufacturing costs due to high-speed production and removal of the need for gluing or nailing
- Less volume of material due to structural efficiency
- DLT utilizes standard dimensional lumber which is more cost-efficient to procure than lamstock
Performance
- DLT has an ICC report (ESR-4069) which constitutes code compliance with the IBC, for both structural and fire design
- High fire resistance - DLT has a particular advantage as all wood fiber is parallel to the primary span, and unlike CLT there is not an abrupt loss in strength when char reaches a layer perpendicular to the span. Fire testing has determined a 2hr fire resistance of an unrestrained load-bearing floor panel in accordance with ASTM E119, Standard Test Methods for Fire Tests of Building Construction and Materials, and CAN/ULC-S101, Standard Methods of Fire Endurance Test of Building Construction and Materials.
- EPD - DLT is a sustainable alternative to conventional building materials, with a low carbon footprint as demonstrated by StructureCraft Environmental Product Declaration.
Site Efficiency
- Speed of Construction — 25,000 sqft floor plate erected in as little as a week due to coordinated prefabricated elements
- Reduced installation time with a “kit of parts”
- Large panels, up to 12’ wide x 60’ long
Application
- Multi-story mass timber buildings
- Commercial, residential, institutional, and industrial buildings
- Floor structures
- Wall structures
- Roof structures
