Delegated design is a regular part of commercial construction. Contract documents often assign the design of specific components to the contractor, including temporary shoring, formwork, miscellaneous steel, cold-formed steel framing, pipe supports, and equipment anchorage. The general contractor or trade partner then engages a licensed engineer to design those components to the performance criteria in the specifications.
The engineer selected for that work affects submittal approvals, field productivity, and schedule. The following qualities can help contractors evaluate a structural engineering firm for delegated design scopes.
Clear Understanding of Engineering Responsibilities
Delegated design involves more than one engineer. The engineer of record (EOR) is responsible for the design of the permanent structure and typically reviews delegated submittals for general conformance with the design intent. The delegated engineer designs the assigned components and seals those calculations and drawings.
A firm experienced in delegated work understands where its responsibility begins and ends, reads the performance criteria closely, and raises questions through requests for information (RFIs) early, rather than after a submittal is returned.
Familiarity with Field Conditions
Crews build delegated components with real materials, limited access, and tight sequencing. Details that look correct on paper may be difficult to install.
A firm with construction engineering experience is more likely to ask about means and methods, crane and equipment access, and installation sequence before finalizing a design. For temporary works such as shoring and falsework (the temporary framework that supports concrete until it can carry its own weight), the design also has to account for construction loads, pour sequences, and the order in which supports are removed. Details that reflect field conditions can reduce the questions subcontractors raise once work begins.
Turnaround That Matches the Schedule
Deferred submittals, portions of the design submitted to the building official after the initial permit, frequently sit on the project’s schedule-driving path. When stamped drawings arrive late, installation can stall, and downstream trades may lose time.
When evaluating a firm, ask how it handles turnaround on initial submittals and on revisions. Field conditions change on active projects, so responsiveness to revisions can matter as much as the speed of the first package.
Range Across Materials and Scopes
A single commercial project may require several kinds of delegated design. When comparing options, contractors can ask if the structural engineering company has experience with:
● Shoring, reshoring, and post-shoring deck analysis (checking a concrete deck after crews remove shores)
● Formwork and falsework design
● Earthwork and excavation shoring
● Miscellaneous steel, cold-formed steel, and metal stud framing
● Seismic anchorage of equipment and bracing of MEP lines
● Scaffolding, crane tower, and manhoist tower engineering
Working with one firm across several scopes can reduce the number of consultants a contractor coordinates on the same project.
Licensing in the Project’s Jurisdiction
Delegated design drawings usually require the seal of an engineer licensed in the state where the project is located, and some jurisdictions may require a structural engineer (SE) license for certain structures. Contractors working across several states can confirm early that the firm holds the necessary professional engineer (PE) or SE licenses for each location. Licensing rules vary by state and can change, so confirming them at the proposal stage can help prevent delays at submittal.
Support During Construction
Delegated design does not end at submittal approval. Questions arise during installation, inspections may require follow-up, and unexpected conditions can call for revisions. Consider who will answer field questions once work is underway and how quickly they typically respond. Site visits, field observation letters, and prompt review of proposed field changes can help keep work moving when conditions differ from the drawings.
Each delegated scope depends on project-specific criteria, so final designs should come from site-specific evaluation by a licensed engineer.
Choosing a Dependable Engineering Partner
Delegated design shifts part of the structural scope onto the contractor, which makes the choice of engineer a scheduling decision as much as a technical one.
Zenith Engineers Inc. is a reliable