MasterFormat Division 35: Waterway and Marine Construction

Division 35 covers waterway and marine construction—dams, levees, ports, harbors, piers, docks, and coastal protection structures. Learn how Division 35 organizes specification sections, connects to UniFormat and OmniClass, and how The Construction Standard provides licensed access to authoritative, edition-aware Division 35 data through CSI Dynamic Standards.

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MasterFormat Division 35 organizes the specification sections, cost codes, and work results for waterway and marine construction across the construction industry. As part of CSI's consensus-based classification system, Division 35 provides the authoritative structure that specifiers, estimators, contractors, and software platforms use to organize waterway and marine construction work.

What Division 35 Covers

Division 35 covers waterway and marine construction—dams, levees, ports, harbors, piers, docks, and coastal protection structures.

This division includes waterway and marine signaling, dredging, dams, levees, ports, harbors, navigation locks, coastal construction, and underwater construction.

Division 35 contains multiple levels of sections and subsections that organize this scope into a precise, consensus-based hierarchy. These sections provide the numbering backbone for project manuals, bid packages, cost databases, and BIM models. When teams reference Division 35 consistently, every document from concept estimate to closeout speaks the same language.

Licensed through The Construction Standard, CSI Dynamic Standards includes the authoritative, always-current section numbers and titles for Division 35—searchable, cross-referenced, and edition-aware.

Common Division 35 Work Results

Common Division 35 work results include Waterway and Marine Construction and Equipment, Coastal Construction, Waterway Construction and Equipment, Marine Construction and Equipment, Dam Construction and Equipment. These examples help teams orient the division, but they are not a substitute for current licensed standards access. MasterFormat section titles, numbering depth, and coordination notes can change as CSI updates the standard. For production specifications, estimating templates, cost databases, procurement workflows, or software integrations, teams should validate every Division 35 reference against CSI Dynamic Standards.

  • 35 20 00 – Waterway and Marine Construction and Equipment
  • 35 30 00 – Coastal Construction
  • 35 40 00 – Waterway Construction and Equipment
  • 35 50 00 – Marine Construction and Equipment
  • 35 70 00 – Dam Construction and Equipment
Who Uses Division 35
  • Marine engineers designing port and harbor facilities
  • Coastal engineers designing shoreline protection
  • Dam and levee engineers
  • Port authorities and waterway agencies

Whether you write specifications, estimate costs, coordinate BIM models, or build software that references waterway and marine construction, Division 35 numbers and titles are the shared vocabulary your work depends on.

Why Division 35 Matters in Project Delivery

Division 35 is used wherever teams need a stable reference for scope, responsibility, and deliverables. Designers use it to organize specifications. Estimators use it to structure takeoffs and cost assemblies. Contractors use it to align bids, submittals, RFIs, and closeout documents. Owners and facility teams use it to keep project records searchable after turnover.

When Division 35 is out of date, copied from an old PDF, or mixed with local aliases, coordination breaks down quickly. A section number in a project manual may not match a cost code in an estimate. A BIM object may point to a stale classification. A procurement package may separate work differently than the specification. Current, licensed MasterFormat access reduces those mismatches by keeping every team aligned to the same controlled source.

How Division 35 Connects to Other Standards

UniFormat

Division 35 extends UniFormat into marine and waterway infrastructure—specialized construction entities beyond typical building scope.

OmniClass

OmniClass Table 11 (Construction Entities) classifies marine and waterway facilities as built environment entities.

These cross-references are maintained by CSI through governed crosswalks—not assembled ad hoc by individual project teams. Through The Construction Standard, licensed access to CSI Dynamic Standards gives teams these relationships so they can navigate between specifications, elements, and lifecycle categories without manual remapping.

Related MasterFormat and Classification Lookups

Division 35 is part of the broader MasterFormat system and should be read alongside related CSI standards. MasterFormat organizes work results for specifications and procurement. UniFormat organizes building elements for early estimating and conceptual planning. OmniClass extends classification across spaces, products, activities, phases, and information used through the facility lifecycle.

Use Division 35 pages as an orientation point, then move into the current CSI Dynamic Standards platform when a project, template, data model, or commercial product depends on authoritative numbers and titles. The Construction Standard is designed for that workflow: find the relevant division, understand the classification context, and access the current standard instead of relying on stale spreadsheet exports or uncontrolled copies.

Why Edition Awareness Matters

MasterFormat evolves through consensus-based updates. Projects that span multiple years may reference different editions. Division 35 sections may be added, renumbered, or revised between editions. Without edition awareness, teams risk referencing obsolete section numbers, creating specification conflicts, and generating RFIs that delay construction.

Licensed through The Construction Standard, CSI Dynamic Standards gives teams full edition context for Division 35—teams know which edition applies at each project milestone, what changed, and where those changes affect their work.

The Licensing Relationship

CSI—the Construction Specifications Institute—stewards Division 35 as part of MasterFormat. CSI Dynamic Standards includes MasterFormat, UniFormat, and OmniClass as a connected, edition-aware system. The Construction Standard provides licensed access to CSI Dynamic Standards:

  • Always current: Section numbers and titles reflect the latest CSI-approved updates
  • Edition-aware: Teams know which edition applies and what changed between releases
  • Cross-referenced: Governed relationships to UniFormat and OmniClass stay maintained
  • Integration-ready: Enterprise solutions carry Division 35 data into the tools you already use

Access Current CSI Standards

CSI Dynamic Standards provides authorized access to MasterFormat, UniFormat, and OmniClass through a connected, edition-aware platform. Create an account to view access options, or review pricing for organization-wide standards use.

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COMMON QUESTIONS
Division 35 – Waterway and Marine Construction covers this division includes waterway and marine signaling, dredging, dams, levees, ports, harbors, navigation locks, coastal construction, and underwater construction. It provides the authoritative section numbering used in project manuals, cost databases, bid packages, and BIM models across the construction industry.
Marine engineers designing port and harbor facilities, Coastal engineers designing shoreline protection, Dam and levee engineers, Port authorities and waterway agencies—anyone who writes specifications, estimates costs, manages submittals, or builds software that references waterway and marine construction work results needs authoritative Division 35 section numbers and titles.
Division 35 extends UniFormat into marine and waterway infrastructure—specialized construction entities beyond typical building scope. OmniClass Table 11 (Construction Entities) classifies marine and waterway facilities as built environment entities. CSI Dynamic Standards includes these governed crosswalks—licensed through The Construction Standard—so teams can navigate between standards without manual remapping.
If your organization uses Division 35 section numbers, titles, or descriptions in deliverables, templates, products, or platforms that others rely on, CSI Standards licensing is necessary. The license ensures you're working with authoritative, CSI-approved data that stays current with consensus-based updates.

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CSI Dynamic Standards includes MasterFormat, UniFormat, and OmniClass as a connected, edition-aware system. The Construction Standard provides licensed access—built for the speed of your work.

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