CSI Division

Division 13: Special Construction submittal deviations

What changes between a Division 13 Special Construction spec section and the sub's submittal, why it matters, and how each deviation is graded.

By Deviation Check Editorial Team. Last reviewed June 1, 2026.

Short answer

Division 13 Special Construction submittals deviate most often on product substitutions, performance ratings, and missing certifications. Deviation Check flags every difference from the spec and grades it a Blocker, Fix and Resubmit, or Note.

Division 13 covers special construction systems and specialty enclosures in commercial and institutional projects: pre-engineered structures, controlled environment rooms, special purpose rooms, aquatic facilities, and protective systems. Common CSI sections submitted for review:

Common Division 13 CSI sections

Division 13 Special Construction spec sections frequently submitted for review:

Representative Division 13 CSI MasterFormat sections
Section	Title
`13 10 00`	Special Facility Components
`13 11 00`	Swimming Pools
`13 17 00`	Tubs and Pools
`13 18 00`	Ice Rinks
`13 19 00`	Kennels and Animal Shelters
`13 21 00`	Controlled Environment Rooms
`13 21 13`	Clean Rooms
`13 21 23`	Cold Storage Rooms
`13 21 26`	Sound-Conditioned Rooms
`13 28 00`	Athletic and Recreational Special Construction
`13 34 00`	Fabricated Engineered Structures
`13 34 19`	Metal Building Systems (Pre-Engineered)
`13 42 00`	Building Modules (Modular/Prefabricated)
`13 48 00`	Seismic Protection
`13 48 13`	Seismic Isolation Systems
`13 49 00`	Lightning Protection
`13 49 21`	Radiation Protection
`13 49 23`	Storm Shelters and Safe Rooms
`13 49 33`	Vault Construction

The six deviation categories in Division 13 Special Construction

Every issue Deviation Check flags maps to one of six categories. Here is how each appears in Division 13 Special Construction 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.

Div 13 specs name specialty manufacturers for unique building systems. Look for:

Manufacturer or Product Substitution in Division 13 Special Construction 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 Div 13 submittals:

Performance Specification Gap in Division 13 Special Construction 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 Div 13 submittals:

Missing Certification or Compliance Documentation in Division 13 Special Construction submittals →

Aesthetic Deviation

Fix and Resubmit A visible attribute (color, finish, texture, profile) differs from the spec or the architect-approved sample.

Aesthetic Deviation in Division 13 Special Construction 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 13 Special Construction 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 13 specs:

Submittal Package Incompleteness in Division 13 Special Construction submittals →

How Division 13 deviations are graded

Each finding is graded Blocker, Fix and Resubmit, or Note. Division 13 escalation rules:

Clean room panel not meeting flame spread per ASTM C1166: BLOCKER (fire/life-safety)
Lightning protection system not UL 96A or NFPA 780 compliant: BLOCKER (life-safety, insurance)
Radiation shielding below design thickness: BLOCKER (occupant health, NRC compliance)
Storm shelter not meeting ICC 500 or FEMA P-361: BLOCKER (life-safety)
Vault fire rating below specified hours: BLOCKER (asset protection, code)
Seismic isolation bearing capacity below structural demand: BLOCKER (structural/life-safety)
Clean room ISO classification not achievable with submitted filter layout: BLOCKER (functional failure)
Blast resistance below specified psi overpressure: BLOCKER (life-safety)
Pre-engineered building finish or color mismatch: FIX_AND_RESUBMIT (aesthetic, contract)
Pool equipment capacity below specified flow/turnover: FIX_AND_RESUBMIT (health code, performance)
Missing air balance calculations for clean rooms: FIX_AND_RESUBMIT (commissioning dependency)
Missing lightning protection zone coverage analysis: FIX_AND_RESUBMIT (design verification)
Cold storage insulation R-value below spec: FIX_AND_RESUBMIT (energy performance)
Missing installer qualification documentation: FIX_AND_RESUBMIT (warranty requirement)

Run a Division 13 submittal review

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Frequently asked questions

What are the most common deviations in Division 13 Special Construction 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 13 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.