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What are submittals and shop drawings in construction?

Submittals are the documents a contractor sends for review before it orders or installs the work. Shop drawings are one kind: drawings made for this job that show how the work will be built.

The contract documents show the design intent. Submittals show how the contractor plans to meet it. The architect reviews them before material is ordered. A wrong product is then caught on paper and not on site.

Common kinds of submittal

  • Product data. Manufacturer data sheets, marked to show the model and options.
  • Shop drawings. Drawings prepared for this project by the contractor, fabricator or manufacturer.
  • Samples. Physical pieces for color, finish or texture.
  • Certificates and test reports.
  • Calculations, sometimes sealed by an engineer.
  • Closeout items. Operation and maintenance manuals and warranties.

How shop drawings differ from the contract drawings

The architect's drawings show what is wanted. Shop drawings show exactly how one trade will make and install it. A shop drawing for gym equipment shows each unit, its attachment to the structure, its dimensions and its electrical needs. Field dimensions are often part of the work.

Where the requirements are

Part 1 of each spec section lists the submittals for that section. Division 01 sets the procedure, usually in section 01 33 00. It covers the format, the number of copies, the review time and the steps for resubmittal.

The usual path

  1. The subcontractor prepares the submittal.
  2. The general contractor reviews it and sends it to the architect.
  3. The architect returns it with an action, such as approved or revise and resubmit.
  4. The subcontractor corrects it if needed and orders material after approval.

What to price at bid time

Submittals cost time and sometimes money. Engineered shop drawings, sealed calculations, samples and mockups all have a cost. Review time also affects lead time. Read Part 1 of your section and section 01 33 00 before you set your price and your delivery date.

A reviewed submittal does not normally change the contract. If your product differs from the spec, the substitution process applies.

Bid documents · Updated 11 Nov 2026

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