Ordering Materials is The GC’s Job!

The GC’s Job Is Not Done Until the Materials Are There: A Final Word on Supply Chain Ownership

Jason Schroeder has covered just-in-time deliveries. He has covered procurement logs. He has explained why the supply chain is not in Procore. This episode exists because the same conversation keeps happening on project visits, and the answer keeps being wrong.

“That’s the trade partner’s job.” It is not.

The Walmart Distribution Model Applied to Construction

Walmart does not stock its stores directly from manufacturers. The supply chain runs through distribution centers, which buffer inventory between production and retail. The distribution centers receive large shipments from manufacturers, organize them by product category, and dispatch to individual stores on a schedule that maintains adequate inventory at the point of sale without creating excess that goes to waste.

The grocery store itself is the final supermarket buffer: a staging location that holds enough inventory for customers to pull what they need, replenished from the distribution center on a rhythm that prevents stockouts without creating overstocking.

This is the model that just in time construction procurement mirrors. Materials are ordered and tracked through the supply chain. They arrive at the project’s designated lay down area, the construction supermarket, buffered ahead of when each zone needs them. Crews pull materials from the supermarket to the work face just in time, without having floors pre stocked with materials that create tripping hazards and congestion.

The system works when it is actively managed. It fails when it is assumed to happen on its own.

What Active Supply Chain Management Actually Looks Like

The procurement log is the instrument. Not the submittal register in Procore. The procurement log tracks the full supply chain from executed contract to material in the supermarket.

For a given scope, that log needs to capture: the submittal status, the PO status at the manufacturing plant, whether the order is in fabrication, shipping status including customs clearance for overseas materials, expected delivery date, buffer duration between delivery and planned installation, and the supermarket location where the material will land on site.

For long lead items like curtain wall, exterior metal panels, or elevators, where supply chains can run five to nine months, the log needs to capture multiple intermediate release points. When were samples approved? When were dies released? When were shop drawings approved and the fabrication order placed? When does field measuring need to happen in order to maintain the delivery timeline? Each of those dates should be on the team’s shared calendar, tracked actively, and reviewed weekly.

Jason makes the point directly: if there is one long bar in a schedule that says “exterior curtain wall procurement” without intermediate milestones, the team does not have procurement management. They have a procurement placeholder.

Breaking Materials Out by Zone

One of the most common procurement failures is receiving materials by building rather than by zone. The entire floor plate of a material category arrives at once, creating a staging problem that affects production for weeks.

Jason’s experience is that breaking materials out by zone is almost always possible if the conversation with the supplier is had early enough and with enough specificity. He has successfully pieced out door frames by zone. Millwork and casework by zone. Metal panels and curtain wall by zone based on the Takt plan sequence.

The objection is usually cost: additional deliveries cost money. Jason’s response is to run the analysis. What does it cost to receive everything at once in lost production time, in congestion, in material damage, in labor to move materials repeatedly? That number has almost never been calculated by the teams making the claim that zone deliveries cost too much.

The German Model and What It Reveals

When Jason visited construction projects in Germany, he found that in some cases at least half of the materials were procured directly by the general contractor rather than by the trade partners. The trade partner brings labor and expertise. The GC brings the material.

This model has trade offs. But Jason’s observation is that the failures caused by this trade off are far less costly than the failures caused by having each trade partner manage their own procurement in a silo, with no GC visibility or coordination.

The lesson is not that GCs should procure everything. The lesson is that the GC’s active participation in procurement is not optional regardless of who ultimately places the orders. Just as a GC does not delegate safety to the safety manager and call it done, and does not delegate quality to the QC manager and call it done, a GC does not delegate procurement to trade partners and call it done.

If your project needs superintendent coaching, project support, or leadership development, Elevate Construction can help your field teams stabilize, schedule, and flow. Supply chain ownership is one of the clearest markers of a project team that is actually in control versus one that is reacting to the consequences of delegated chaos.

The Challenge for GC Teams This Week

Pull up your procurement log. If you do not have one, that is the answer. If you do have one, check whether it has intermediate release point milestones for your long lead items. Check whether your materials are being tracked by zone. Check whether the last weekly procurement meeting happened and what decisions came out of it.

A GC that is not in a weekly procurement meeting with a functioning procurement log is not managing the supply chain. They are hoping it works out.

As the principle holds: amateurs study tactics, armchair generals study strategy, and the real generals study logistics. If you can get things where they need to go, you can build a remarkable project. If you cannot, the rest of the plan does not matter.

On we go.

Frequently Asked Questions

How do you establish a procurement meeting rhythm that actually produces decisions?

The meeting should run weekly with the superintendent leading, the project manager and project engineers in the room, and trade partner points of contact available by phone when their scope is being reviewed. The agenda follows the procurement log: current status, upcoming release points, any delivery risks, and corrective action items with owners and dates. The meeting is not a status report. It is a decision making session.

What is the GC’s role when a trade partner is managing their own procurement?

Active oversight and verification, not passive acceptance. The GC should know the trade partner’s supply chain timeline, be receiving regular status updates, have direct contact with the supplier for critical items, and have identified the intermediate milestones that need to be hit to keep the delivery on track.

How do you handle a trade partner who resists sharing procurement information with the GC?

Address it contractually and in the preconstruction meeting. Procurement transparency is a project requirement, not a courtesy request. If the subcontract requires timely delivery in accordance with the project schedule, the GC has the right to verify that the supply chain is on track to meet that requirement.

What should a Takt aligned procurement log look like for a complex project?

It should show every scope in the Takt sequence, with columns for the current procurement status at each stage: contract executed, submittal submitted, submittal approved, PO placed, in fabrication, in transit, on site, in supermarket. For long lead items, add a column for each intermediate release milestone. The dates in the log should be driven by the Takt plan’s zone sequence, counting back from when each material needs to be in the supermarket.

What happens to projects that do not manage procurement actively?

The same thing that happens to ships that sail without checking the fuel gauge: they run out of what they need in the worst possible place at the worst possible time. Late materials cause production gaps. Production gaps create crew displacement. The cost of reactive procurement is always greater than the cost of proactive procurement management.