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What Is Meant by a Submittal in Construction and Engineering?

November 19, 2025

In construction and engineering, the term “submittal” refers to a collection of documents, drawings, samples, and data that contractors send to architects, engineers, and project owners for review and approval before materials are ordered or installation begins.

Submittals are an essential part of the project management and quality-control process. They ensure that what is being built on-site matches the design intent, technical specifications, and safety standards laid out in the project plans.

Why Are Submittals Needed?

Every construction project—whether it’s a commercial building, industrial plant, or infrastructure project—involves hundreds or even thousands of components. Submittals help verify that each component:

  • Meets the required technical specifications
  • Aligns with the design and engineering intent
  • Complies with safety codes and standards
  • Is suitable for the environment and application

This prevents costly mistakes, rework, delays, and disputes during construction.

Types of Submittals

Submittals can vary depending on the project, but common types include:

  • Product data sheets (material specifications, performance data)
  • Shop drawings (detailed contractor drawings for fabrication or installation)
  • Samples (finishes, fixtures, materials)
  • Mock-ups
  • Control submittals (BAS, HVAC control sequences, wiring diagrams)
  • Equipment catalog cuts
  • Test reports and certifications

The Submittal Process (Simplified)

  1. Contractor prepares the submittal package
  2. Submits it to the general contractor or construction manager
  3. Engineer/architect reviews and approves or requests revisions
  4. Approved submittal becomes the reference for procurement, fabrication, and installation

Why Submittals Are Critical

  • They prevent errors and miscommunication
  • Ensure the project team stays aligned
  • Maintain quality control at every stage
  • Provide documentation for future maintenance and facility management
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