MATERIAL HANDLING ACADEMY

Part VIII. Lesson 32. The Handoff.

DRIVING QUESTION Before the first bolt turns, does everyone know what I know?
PART VIII | LESSON 32: THE HANDOFF

Monday Morning. Riverside Says Yes.

The proposal's approved, Tom signed off, Dana's ready to move, and the project's live. Your instinct is to call a vendor and order steel. Hold on. That's not the first move.

The first move is the handoff. Before anyone mobilizes, you get every trade on the same page about what you know that they don't. Get the handoff right and the project runs. Skip it and the phone starts ringing.

PART VIII | LESSON 32: THE HANDOFF

The Drawing Is the Plan You Hand Off

Every person on the job site works from your drawing. The mechanical installer positions equipment from it. The electrical contractor routes conduit from it. The controls team mounts panels, places sensors, and programs setpoints from it.

When it's wrong or incomplete, everyone working from it fills gaps with assumptions, and assumptions in the field cost money and time in ways assumptions on paper never do. The handoff is the moment you release that drawing as the plan and stand behind it. What belongs on it is Lesson 28's ground. Part VIII releases it and defends it.

PART VIII | LESSON 32: THE HANDOFF

Surfacing the Skeletons

We don't know what others don't know.

You engineered a belted induction section upstream of the merge for the air accumulation risk, and you assume the controls team knows why. They assume mechanical knows the transfer sensor sits offset from center by the PLC-delay amount. Nobody's wrong. Nobody communicated what they knew. That gap is where field problems get born.

So you run a meeting, not an email. You walk the drawing with every trade in the room and call out every non-obvious decision and the intent behind it.

PART VIII | LESSON 32: THE HANDOFF
FIELD INSIGHT | MICHAEL COLLINS

A good handoff is one where the execution team and every vendor know where all the skeletons are hiding. The easy stuff isn't the problem. Everybody knows how to install a straight run of conveyor. It's the decisions that took judgment to get right that nobody else can see. We don't know what others don't know, so we've got to make sure everyone's on the same page. That means a meeting, a drawing walkthrough, and a specific callout for every non-obvious decision in the design. If you engineered something that needed judgment to get right, that judgment gets communicated before the project starts, not discovered in the field.

Michael Collins
PART VIII | LESSON 32: THE HANDOFF
COMMON MISTAKE

Treating the handoff meeting as a substitute for the drawing. A great walkthrough isn't a complete drawing. Verbal instructions given in a meeting get forgotten. A detail discussed out loud but never drawn doesn't exist when a dispute comes up six months later. The meeting surfaces the skeletons. The drawing has to stand on its own after everyone goes home.

PART VIII | LESSON 32: THE HANDOFF

The Handoff: The Three W's

WHYThe handoff is where you surface the skeletons, the non-obvious decisions only you know, before they turn into field problems. The engineer who hands off a complete, well-communicated package runs projects on schedule. The one who treats the drawing as a starting point generates change orders and callbacks.
WHENBefore the first subcontractor mobilizes. The vendor calls, the drawing review, and the walkthrough all happen before anyone sets foot on the site.
WHEREA meeting with every trade in the room, plus a released drawing that stands on its own after the meeting ends.
NOT WHENNot the project manager alone. Every subcontractor who'll be on site needs to be in the room. The controls team can't act on a decision they never heard, and the meeting's the one time you've got all of them at once.
FAILURE IF IGNOREDYou skip the walkthrough, the trades fill the gaps with assumptions, and the merge gets built without the belted induction section because nobody told the installer why it was there. It shows up as a jam a month after go-live, and now it's a field fix instead of a five-minute callout.
PART VIII | LESSON 32: THE HANDOFF

Name Every Seam

Every interface between trades is a potential gap, because each trade assumes the other side's got it covered. Name each seam out loud in the room, and make one trade responsible for each side of it.

Mechanical to electrical

At the panels. Mechanical hands off to electrical.

Electrical to controls

At the Aux I/O and the WMS interface. Electrical hands off to controls.

Then confirm every vendor's working from the same scope, and agree the redline process before anyone mobilizes. Running that process is Lesson 33's job.

PART VIII | LESSON 32: THE HANDOFF

Bring It Live Without Going Dark

Brownfield phased cutover timeline: an unbroken operation band labeled the operation keeps shipping runs across the top; below it Flow 1, Flow 2, and Flow 3 cut over one at a time from left to right; two shaded uptime-protected windows mark where disruptive work lands; a downward rollback arrow from each flow returns to a dashed manual path kept open beneath, which turns gold and can retire after the final cutover.
Phase it by flow. Keep the manual path open until each flow is proven. Uptime-protected windows off the shipping peak.
PART VIII | LESSON 32: THE HANDOFF
STOP AND THINK

The customer ships every day and can't go dark, not even for one shift. You've got a system to install across their outbound floor. Before you schedule a single hour of disruptive work, name the one thing you protect above the install schedule, and the path you keep open in case a new section isn't ready on cutover day.

PART VIII | LESSON 32: THE HANDOFF

Riverside

RIVERSIDE PROJECT

The well-reasoned answer to the Monday-morning debrief starts with the handoff, not the vendor call. Get the room right first: every trade that'll be on site, and Michael, the maintenance lead who works alone and has watched two systems fail on this floor. He's in the room from the start.

Surface Riverside's skeletons: the belted induction ahead of the merge, the mezzanine-decline landing, the offset transfer sensors, the forklift-aisle crossing. Then plan the cutover, phased by flow, with the manual staging path kept open as your rollback until each flow is proven.

Next: The build is live. What does the engineer still own?