Fabrication change orders create problems for everyone involved in a project.
They disrupt budgets, create schedule pressure, and force teams to revisit decisions that were assumed to be settled. They also consume time that estimators, project managers, and fabricators would rather spend moving the project forward.
In many cases, steel change orders are not caused by fabrication errors. They happen when small gaps in the bid documents or early assumptions surface later during detailing or production.
The good news is that many of these issues are preventable.
Here are some of the most common causes of steel fabrication change orders and the steps that can help avoid them.
1. Unclear Connection Assumptions
The problem
Connection design is often left as a delegated responsibility. While this approach is common, expectations are not always clearly defined in the bid documents.
Why it causes change orders
When connection scope is unclear, bidders may make different assumptions about what is included. Once final engineering requirements are established, the scope may expand beyond what was originally priced.
How to prevent it
Before issuing an RFQ, clarify who is responsible for connection design and confirm whether connections are included in the base bid. If there are specific performance requirements, document them early so bidders can price the work accurately.
2. Material Sizes That Are Difficult to Source
The problem
Drawings sometimes specify steel sections or plate thicknesses that are uncommon or not readily available.
Why it causes change orders
Steel mills roll certain sizes during specific production cycles. If a project requires non-standard or heavier members, those materials may have longer lead times or limited availability.
When these issues are discovered late, teams may need to change member sizes or expedite materials, which can affect both cost and schedule.
How to prevent it
A brief review with a fabricator can help identify potential sourcing challenges early. In many cases, alternate sections can meet the same structural requirements while being easier to procure.
Catching these issues early allows the team to make adjustments before the project schedule is affected.
3. Incomplete Finish and Coating Information
The problem
Coatings and finishes are sometimes assumed but not fully documented in the bid package.
Why it causes change orders
Fabricators may price steel based on standard shop primer or basic finish requirements. If galvanizing, specialty coatings, or exposed architectural finishes are required but not clearly specified, additional costs may appear later.
These changes often surface once fabrication planning has already begun.
How to prevent it
Confirm finish requirements during the estimating phase. Important details include galvanizing requirements, specialty coatings, and whether any members will remain exposed and require a higher finish quality.
Clear documentation ensures the correct processes are included in the original bid.
4. Unclear Scope Boundaries Between Trades
The problem
Responsibility for certain items is not always clearly assigned in construction documents.
Items such as embeds, base plates, miscellaneous metals, or specialty supports may fall into gray areas between trades.
Why it causes change orders
When scope boundaries are unclear, fabricators may exclude items they assume belong to another trade. Those gaps often surface later when fabrication drawings are reviewed.
At that point, additional scope must be added through change orders.
How to prevent it
Review scope boundaries early and confirm responsibility for items that commonly fall between trades. Clear scope definitions help ensure bids reflect the full scope of work from the start.
5. Missing Schedule Context
The problem
Fabricators are sometimes asked to price projects without understanding the anticipated schedule.
Why it causes change orders
Fabrication planning depends heavily on timing. Without schedule context, material procurement and fabrication sequencing may not align with project needs.
When schedule realities become clear later, adjustments may be required to meet erection timelines.
How to prevent it
Sharing even a preliminary project schedule during the estimating phase allows fabricators to identify potential lead time conflicts and advise on sequencing considerations.
Early visibility helps prevent schedule-driven changes later in the project.
Quick Checklist: Preventing Steel Change Orders
Before issuing your RFQ, confirm the following:
- Connection design responsibilities are clearly defined
- Material sizes are readily available
- Coatings and finishes are fully documented
- Scope boundaries between trades are clear
- Fabrication schedule expectations are realistic
These simple steps can prevent many of the issues that lead to steel change orders.
At JT Steel, our estimators review project documents every day and regularly help identify these risks early. A short conversation during the estimating phase can often prevent larger adjustments once fabrication begins.
A Short Conversation Can Save Time Later
A short conversation early in the process can prevent costly changes later. If you want a fabricator’s perspective on scope, material availability, finish requirements, or schedule considerations, contact JT Steel. We are happy to review your project with you.