CSI Division
CSI Division 06 Wood, Plastics, and Composites: section numbers and submittal deviations
What gets flagged between a Division 06 Wood, Plastics, and Composites spec section and the submittal package, why it matters, and how each deviation is graded, so you can catch it before you send the package or before you approve it.
Short answer
Wood, Plastics, and Composites is Division 06 in CSI MasterFormat, so its section numbers start with 06. Common sections include 06 10 00 Rough Carpentry, 06 11 00 Wood Framing, and 06 13 00 Heavy Timber Construction. Its submittals deviate most often on product substitutions, performance ratings, and missing certifications.
Division 06 covers wood, plastics, and composite products in commercial construction: rough carpentry, finish carpentry, heavy timber, glulam, CLT/mass timber, architectural woodwork, wood trusses, structural composite lumber, plastic fabrications, FRP, and wood treatment/preservation. Common CSI sections submitted for review:
Division 06 Wood, Plastics, and Composites CSI section numbers
Division 06 Wood, Plastics, and Composites spec sections frequently submitted for review:
| Section | Title |
|---|---|
06 05 00 | Common Work Results for Wood, Plastics, and Composites |
06 05 73 | Wood Treatment |
06 10 00 | Rough Carpentry |
06 11 00 | Wood Framing |
06 13 00 | Heavy Timber Construction |
06 15 00 | Wood Decking |
06 16 00 | Sheathing |
06 17 53 | Shop-Fabricated Wood Trusses |
06 18 00 | Glued-Laminated (Glulam) Construction |
06 18 13 | Cross-Laminated Timber (CLT) |
06 18 16 | Structural Composite Lumber (LVL, PSL, LSL) |
06 20 23 | Interior Finish Carpentry |
06 40 00 | Architectural Woodwork |
06 40 23 | Architectural Woodwork - Standing and Running Trim |
06 61 16 | Solid Polymer (Solid Surface) Fabrications |
06 65 00 | Fiber-Reinforced Polymer (FRP) Fabrications |
Sending a Division 06 package? Run the free Division 06 pre-submittal checklist first. It prints or downloads as a PDF, no email required.
The six deviation categories in Division 06 Wood, Plastics, and Composites
Every issue Deviation Check flags maps to one of six categories. Here is how each appears in Division 06 Wood, Plastics, and Composites submittals, with the full guide one click away.
Manufacturer or Product Substitution
Blocker The submittal proposes a different manufacturer or product than the spec names, without an approved or-equal or substitution request.
Wood and composite specs name basis-of-design manufacturers and product lines. Submittals proposing alternates must provide "or equal" documentation. Look for:
Manufacturer or Product Substitution in Division 06 Wood, Plastics, and Composites submittals →
Performance Specification Gap
Blocker A measurable performance property in the submittal (rating, capacity, tolerance, efficiency) does not meet what the spec requires.
Key performance parameters in Division 06 submittals:
Performance Specification Gap in Division 06 Wood, Plastics, and Composites submittals →
Missing Certification or Compliance Documentation
Fix and Resubmit A required listing, test report, certification, or compliance document is absent from the submittal package.
Required certifications in Division 06 submittals:
Aesthetic Deviation
Fix and Resubmit A visible attribute (color, finish, texture, profile) differs from the spec or the architect-approved sample.
Applies primarily to architectural woodwork and exposed structural wood:
Aesthetic Deviation in Division 06 Wood, Plastics, and Composites submittals →
Detail or Installation Mismatch
Fix and Resubmit The submitted detail, dimension, anchorage, or installation method differs from what the spec or drawings require.
Detail or Installation Mismatch in Division 06 Wood, Plastics, and Composites submittals →
Submittal Package Incompleteness
Fix and Resubmit A required submittal element (cut sheet, schedule, calculation, sample) is missing, leaving the package unreviewable as submitted.
Commonly required items in Div 06 specs:
Submittal Package Incompleteness in Division 06 Wood, Plastics, and Composites submittals →
How Division 06 deviations are graded
Each finding is graded Blocker, Fix and Resubmit, or Note. Division 06 escalation rules:
- Wood species or grade below structural design requirements: BLOCKER (structural capacity not met per NDS)
- Missing ICC-ES ESR report for engineered wood product: BLOCKER (no verified basis for code compliance)
- FRT product not listed for intended application: BLOCKER (fire-safety, code violation per IBC)
- Moisture content exceeds specified limit for enclosed conditions: BLOCKER (shrinkage, fastener withdrawal loss, decay risk)
- Missing truss design calculations or sealed drawings: BLOCKER (IBC requires licensed PE design per TPI 1)
- Preservative treatment retention below AWPA minimum for specified use category: BLOCKER (premature decay, structural failure)
- Connector load rating below design load: BLOCKER (structural connection failure)
- CLT panel layup or grade below structural design requirements: BLOCKER (does not meet ANSI/APA PRG 320 stress values)
- AWI quality grade below specification: FIX_AND_RESUBMIT (aesthetic/workmanship, not structural)
- Wood species stain color mismatch for architectural woodwork: FIX_AND_RESUBMIT (aesthetic, architect approval needed)
- Missing preservative treatment certificate: FIX_AND_RESUBMIT (treatment may be correct but documentation absent)
- Veneer cut or matching method differs from spec: FIX_AND_RESUBMIT (aesthetic, requires architect review)
- Missing FSC/PEFC chain-of-custody documentation: FIX_AND_RESUBMIT (LEED credit, not life-safety)
- Sheathing nailing schedule differs from shear wall design: BLOCKER if lateral system, FIX_AND_RESUBMIT if non-structural
Run a Division 06 submittal review
Upload a Division 06 spec section and your submittal package before you send it, and get a one-page deviation report in under five minutes, so the package goes through the first time. GC reviewers use it the same way on a package that just arrived. Before that, work through the free Division 06 checklist.
Frequently asked questions
What is the CSI code for wood, plastics, and composites?
Wood, Plastics, and Composites is CSI MasterFormat Division 06, and every section number in it starts with 06. Common sections include 06 10 00 Rough Carpentry, 06 11 00 Wood Framing, 06 13 00 Heavy Timber Construction, 06 15 00 Wood Decking, and 06 16 00 Sheathing. Type any number into the CSI division lookup to decode it.
What is Division 06 Wood, Plastics, and Composites in construction?
Division 06 covers wood, plastics, and composite products in commercial construction: rough carpentry, finish carpentry, heavy timber, glulam, CLT/mass timber, architectural woodwork, wood trusses, structural composite lumber, plastic fabrications, FRP, and wood treatment/preservation. In a CSI MasterFormat spec, its sections carry the submittal and product requirements a Division 06 package is reviewed against.
What are the most common deviations in Division 06 Wood, Plastics, and Composites submittals?
The most common are product or manufacturer substitutions, performance specification gaps, and missing certification or compliance documentation. Deviation Check sorts every finding into one of six categories.
How are Division 06 deviations graded?
Each finding is graded Blocker (resolve before approval), Fix and Resubmit (correct and re-send before fabrication or install), or Note (acceptable with a comment).
View this page as Markdown for LLMs and note-taking.