01
What is a Timber Elevator Core?
A timber elevator core is a factory-built, vertical structural shaft engineered from high-strength Cross-Laminated Timber (CLT) panels. It is pre-designed to support elevator guide rails, hoistway machinery, and heavy building loads. By shifting fabrication off-site, it serves as a high-precision, structural alternative to traditional, time-consuming cast-in-place concrete cores.
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02
What Are Prefabricated Stair Towers?
Prefabricated stair towers are factory-engineered, vertical structural systems built off-site from high-strength mass timber like CLT. Delivered as pre-assembled units, they provide immediate code-compliant egress and structural stability for mid-rise developments. They replace labor-intensive concrete shafts with a high-precision, rapid-install alternative that drastically reduces project timelines and simplifies site logistics.
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03
Why Quality Buildings?
We turn complex vertical logistics into a rapid, predictable assembly process. By integrating BIM data directly with factory production, we ensure multi-story elevator shafts and stair towers arrive perfectly square and ready for immediate structural integration. Our turnkey installation eliminates site coordination bottlenecks, dropping mass timber cores into place safely and flawlessly.
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Traditional vertical cores hold up the entire job site while concrete cures. QB Timber Towers remove the vertical structure from the critical path entirely.
QB Model
Traditional Method
Method
Panelized / Modular Method
Off-site precision cutting eliminates material scrap before it hits the field.
Masonry / Concrete Block
Manual cuts and field errors cause high material scrap and clean-up costs.
Time to Build
Hours
Factory fabrication runs at the same time as site prep, shrinking total project duration.
3-4 Weeks
Framing is stuck in a linear bottleneck; crews cannot start until site prep is 100% complete.
Labor / Trades
One Trade
Prefab assembly requires less field labor, reducing jobsite congestion and coordination.
Multiple Trades
Multiple overlapping crews increase logistical bottlenecks and scheduling complexity.
Inspections
Minimal
Shifting structural framing to a factory floor removes high-risk work at heights.
Significant
Continuous manual framing at heights under unpredictable weather and field conditions.
Components
Shifting structural framing to a factory floor removes high-risk work at heights.
Continuous manual framing at heights under unpredictable weather and field conditions.
Method
Time to Build
Labor / Trades
Inspections
Weather Impact
Off-site precision cutting eliminates material scrap before it hits the field.
Factory fabrication runs at the same time as site prep, shrinking total project duration.
Prefab assembly requires less field labor, reducing jobsite congestion and coordination.
Shifting structural framing to a factory floor removes high-risk work at heights.
Shifting structural framing to a factory floor removes high-risk work at heights.
Manual cuts and field errors cause high material scrap and clean-up costs.
Framing is stuck in a linear bottleneck; crews cannot start until site prep is 100% complete.
Multiple overlapping crews increase logistical bottlenecks and scheduling complexity.
Continuous manual framing at heights under unpredictable weather and field conditions.
Continuous manual framing at heights under unpredictable weather and field conditions.
Integrate Precision Into Your Vertical Core
What are Timber Towers?
QB Timber Towers are prefabricated cross-laminated timber (CLT) elevator and stair core systems designed for mid-rise residential, mixed-use, student housing, hospitality, and senior living projects. They provide a structural alternative to traditional masonry or concrete cores while supporting faster installation, improved constructability, and more predictable project delivery.
What are the benefits of CLT elevator and stair towers?
CLT elevator and stair towers offer several advantages over traditional construction methods, including:
When evaluated early in design, these advantages can contribute to shorter project schedules and improved coordination.
What types of projects are best suited for Timber Towers?
QB Timber Towers are particularly well suited for:
Projects with repetitive floor plans and consistent structural layouts often realize the greatest benefits from prefabricated tower systems.
How do Timber Towers compare to masonry elevator and stair cores?
Traditional masonry cores require multiple trades, extended installation durations, and are more susceptible to weather delays. CLT Timber Towers are prefabricated structural assemblies that can typically be installed in days using a single installation team, reducing field labor and simplifying coordination.
When should Timber Towers be evaluated during a project?
The ideal time to evaluate Timber Towers is during Schematic Design (SD) or Design Development (DD).
By the time construction documents are complete, structural systems, shaft layouts, and schedules are often fixed, making it much more difficult to evaluate alternative core systems. Early evaluation gives project teams greater flexibility to optimize the structural system, sequencing, procurement strategy, and overall project schedule.
Why is early design coordination important for Timber Towers?
Early coordination allows architects, engineers, contractors, and suppliers to evaluate Timber Towers as part of the entire building system rather than as an isolated product substitution.
This enables teams to:
QB supports this process through Design Assist, BIM collaboration, and integrated project planning.
Can Timber Towers be used with steel or concrete buildings?
Yes.
QB Timber Towers are designed to work within hybrid structural systems and can be integrated with mass timber, structural steel, concrete, and prefabricated framing systems depending on project requirements.
Are Timber Towers code compliant?
Yes.
QB Timber Towers are designed to meet applicable building code requirements, including fire-resistance and acoustic performance requirements for elevator and stair core assemblies. The project team evaluates each building individually to ensure compliance with local codes and project-specific design criteria.
How do Timber Towers improve project schedules?
Because Timber Towers are prefabricated, they arrive onsite ready for installation rather than being assembled from thousands of individual components.
This can:
The result is a more efficient construction sequence and greater schedule predictability.
Does QB provide engineering for Timber Towers?
Yes.
Quality Buildings supports Timber Towers through an integrated Design | Supply | Install approach that includes structural engineering coordination, Design Assist, BIM collaboration, procurement planning, fabrication coordination, logistics, and installation support. This integrated process helps reduce project risk while improving constructability and field execution.
How does QB help reduce project risk?
QB engages during the early stages of design to align structural engineering, constructability, procurement, fabrication, logistics, and installation planning.
By coordinating these activities before construction begins, project teams can reduce field conflicts, improve schedule reliability, and make better-informed decisions about structural systems and sequencing.
Why choose QB Timber Towers?
QB Timber Towers are backed by experience delivering real-world mass timber and hybrid projects—not just supplying a product.
By combining early design collaboration, structural engineering, strategic sourcing, prefabrication, and installation under one partner, QB helps owners, architects, and contractors simplify coordination and improve project delivery from concept through construction.
