Mass timber procurement priorities

Core Rule of Thumb: Release fabrication and delivery against coordinated drawings and a documented handoff plan.

Standard Formula: Rectangular timber volume equals thickness multiplied by width, length and piece count.

Quick Estimate Range: No universal moisture limit, panel tolerance or delivery allowance; use project and manufacturer requirements.

Recommended Qtywise Tool: Board Foot Calculator for a geometric volume check.

A mass timber procurement checklist should confirm the approved panel schedule, moisture protection, transport and lifting access, interface tolerances, and responsibility for every delivery handoff. Agree on these items before fabrication release. A volume tally supports procurement, but does not establish structural capacity, lifting safety or the price of a fabricated panel package.

This 2027 planning checklist uses guidance available at publication. It makes no prediction about future prices, product approvals or code changes. Verify the current manufacturer documentation and locally applicable requirements when placing the actual order. The technical sources below principally address North American projects; their details do not automatically establish UK or European compliance.

Confirm the mass timber procurement scope

Mass timber procurement starts with a coordinated component schedule. Identify whether the package includes cross-laminated timber panels, glued laminated beams, columns, connectors, factory machining, coatings or transport protection. Record the dimensions and product identity of each component rather than treating all wood volume as interchangeable stock.

Keep the approved drawing revision beside the supplier quotation and fabrication release. Ask how openings, connection recesses and edge details affect the package. A quote for rectangular blanks may differ substantially in scope from a quote for machined and protected components.

The WoodWorks Mass Timber Connections Index explains that suppliers have different fabrication capabilities and preferences for connection geometry. Consult the selected supplier about the reviewed details before assuming another manufacturer’s solution is transferable.

Use the Board Foot Calculator to compare entered rectangular dimensions, with a clear note on whether the tally represents gross blanks or finished component geometry. It cannot turn a volume into an approved structural substitution.

Document moisture protection and acceptance

A mass timber moisture plan defines protection, monitoring, response and acceptance for the actual construction sequence. Ask who prepares it, who reviews it and which measurements must be recorded before delivery, installation and covering.

WoodWorks’ Mass Timber Moisture Management for Construction identifies trapped moisture and water exposure at edges, joints and interfaces as risks. Its guidance calls for project-specific protection and monitoring rather than relying on one generic plan.

Acceptance documents and moisture records

The purchasing documents should identify the required condition at handoff and the process for handling a nonconforming delivery. Request the approved measurement method, instrument requirements, locations and reporting format. Record product identifiers so a moisture observation remains attached to the correct panel.

Use the project-specific acceptance limits. The designer and manufacturer need to state the limits relevant to the product, protection system and stage of construction. Ask how those limits will be verified at sensitive interfaces, where a surface observation may not describe concealed moisture.

Release before covering

Include responsibility for drying, further assessment and release before covering. A delivery signature should identify what was checked and what remains unresolved; it should not imply that every concealed condition has been accepted.

Plan transport, access and lifting before dispatch

Delivery planning connects panel dimensions with the usable route and installation sequence. Record vehicle access, overhead restrictions, unloading position and where the next panel will be installed. Coordinate the supplier’s load order with the installer so the first needed components are accessible.

Lifting information and equipment selection

Request verified component weights and the approved lifting information. A geometric volume estimate cannot establish lift weight without appropriate product data, and even a correct weight does not select a safe crane or rigging arrangement. The qualified lifting team must assess the actual equipment configuration and site conditions.

Measure the route using the proposed vehicle and equipment requirements. Note turn restrictions, delivery windows and areas that must remain available for other trades. Ask who confirms the route is ready before a loaded vehicle leaves the factory.

If storage is unavoidable, identify the approved support arrangement, protection and monitoring responsibilities. The moisture plan should cover the period between arrival and installation. Resolve a delayed unloading scenario in advance rather than assuming the factory wrapping provides indefinite site protection.

Coordinate tolerances at concrete and steel interfaces

A tolerance is an allowed dimensional variation within a specified context. Record manufacturing, fabrication and installed-interface requirements separately. A precise factory panel can still encounter a base or connector position that differs from the coordinated design.

The WoodWorks design and cost optimization checklists call for coordination of base-level tolerances with the contractor, foundation subcontractor and timber manufacturer or designer. That discussion belongs before fabrication and installation commitments are finalized.

Ask for the agreed survey information needed to release the package. Record bearing elevations, connection positions and the date of the survey. Confirm who checks the information against shop drawings and how unresolved deviations affect fabrication release.

Do not prescribe a standard gap or site-cutting allowance without the approved details. If the interface differs from the drawing, use the documented request-for-information process. A volume calculator cannot approve trimming, drilling or altering a load-bearing component to make it fit.

Include the authority to approve an adjustment and its effect on connections, fire protection and adjacent assemblies. Keep the final accepted revision in the handoff record so the installed solution remains traceable.

Reconcile rectangular volume with the quoted quantity

Board feet describe volume. One board foot equals 144 cubic inches, or one-twelfth of a cubic foot. When thickness and width are in inches and length is in feet, multiply those three dimensions and piece count, then divide by 12.

board_feet = thickness_in * width_in * length_ft * pieces / 12

Gross blank volume example

Consider eight hypothetical rectangular timber blanks, each 6 in thick, 48 in wide and 12 ft long. These are illustration dimensions, not a recommended panel product. The tally is 6 × 48 × 12 × 8 ÷ 12 = 2,304 BF.

Independent cubic-foot and metric checks

An independent cubic-foot check gives (6 ÷ 12) × (48 ÷ 12) × 12 × 8 = 192 ft³. Multiplying by 12 reproduces 2,304 BF. Using the exact international foot definition, the gross volume is 5.436834545664 m³, displayed as 5.437 m³ after rounding.

QuantityUS customary valueMetric equivalent
Thickness6 in152.4 mm
Width48 in1,219.2 mm
Length12 ft3.6576 m
Total gross volume192 ft³5.436834545664 m³
Hypothetical gross rectangular blanks; openings and fabrication losses are excluded

Reproduce the blank schedule in the timber volume worksheet. Confirm whether the supplier invoices gross stock, finished parts, panel area or a complete fabricated package. Deducting openings from geometric volume does not necessarily deduct the same amount from the invoice.

Mass timber procurement handoffs and responsibilities

HandoffEvidence to requestResponsibility to identify
Fabrication releaseApproved revision and resolved openingsDesigner and manufacturer
DispatchLoad list, protection and delivery sequenceSupplier and logistics coordinator
ArrivalIdentifiers, condition and required moisture recordsReceiving team
InstallationApproved lifting and interface recordsInstaller and qualified lifting team
Before coveringMoisture acceptance and unresolved-condition registerResponsible reviewer named in the plan
Suggested procurement record; project-specific approval remains with the responsible team

Use an exception column in the actual project record. Note missing information, damaged protection or an unresolved interface rather than marking the entire package accepted. Assign the next action and obtain the required approval before the affected work proceeds.

Compare mass timber procurement costs and local requirements

Compare quotations with equivalent inclusions. List fabrication, connectors, transport, storage, protection, survey coordination and installation separately where they are outside the package. Ask whether revision work, waiting time or a repeat delivery changes the price.

Use dated supplier quotations in the project’s currency and market. A price per board foot can support a material-only scenario when that is genuinely the quotation basis. It cannot represent the complete installed cost without the remaining scope.

For a 2027 order, check product documentation and adopted local requirements again at release. Obtain professional approval where structural, fire or lifting judgment is involved. A procurement checklist organizes the evidence; the responsible project team determines whether the package is acceptable.

Enter the confirmed rectangular dimensions and piece count in the Board Foot Calculator. Keep gross volume, supplier billing basis and approved structural specifications distinct.

Documents for mass timber procurement release

  • Coordinated component schedule and approved shop-drawing revision.
  • Moisture plan, acceptance records and responsibility for protection.
  • Verified delivery information and approved lifting arrangements.
  • Interface survey and authorized response to deviations.
  • Supplier billing basis and full inclusions in the dated quotation.

Sources