Over the years I’ve learned hard lessons about trench safety, tunneling, jobsite awareness, and what it takes to make sure everyone goes home. In this post, I’m laying out those lessons—what went wrong, what I would do differently now, and the practical steps any plumber, apprentice, or contractor can put to work today.
Danger Doesn’t Announce Itself
Deadlines, customer pressure, “just one quick fix”—that’s how shortcuts start. Add wet soil, a slope, a leaning wall, or a tight crawlspace and suddenly you’re making life‑or‑death choices with minutes to spare. I’ve had near misses that still put a lump in my throat. I’ve also stood on projects where another tradesperson didn’t make it home. These memories shape how I run jobs today:
- No job is worth your life. Period.
- If you’re not trained to do it safely, you don’t do it.
- You don’t work alone when conditions can trap, crush, or suffocate you.
- You carry the right gear and you know how to use it.
- You own the right to stop work—every single time.
With that foundation, let’s talk about where the risk really lives and how to beat it back.
The Tunneling Wake‑Up Call
Years ago in Texas, we tunneled under a slab to reach a failed fitting and keep a busy restaurant open. Texas black clay looks solid—until it isn’t. It holds shape long enough to convince you it’s stable, then shears off like pudding when moisture, vibration, or time works on it. Back then we dug it ourselves. Today? I would never send a plumber under a slab without a qualified crew, engineered protection, and a plan that assumes collapse can happen today, not “someday.”
What I Should Have Done
- Use trained, professional dig crews with the right shoring, shielding, and experience for local soil.
- Treat every trench and tunnel as a system: soil type, water, weather, depth, entry/exit, atmosphere, and load on the surface (vehicles, equipment, spoil piles).
- Protect the opening and keep the spoil pile back. Two feet from the edge is the bare minimum; more is better.
- Give yourself a second way out. One path means one way to get trapped.
- Ventilate and monitor air. Fans, ducting, and an oxygen/combustible gas monitor aren’t just for deep holes. Stagnant air and pipe gases can kill in shallow spaces.
- Have a top‑side watch. If something shifts, you need someone who sees it and can pull you out or call for help now.
Field‑Tested Tunneling & Trenching Rules
- Depth does not equal danger—conditions do. A four‑foot cut in saturated clay can be more dangerous than a six‑foot cut in competent soil with proper protection.
- Water is your enemy. A slow seep turns stable walls into soup. Pump and divert early; don’t let water build behind shoring.
- Vibration counts. Impact hammers, traffic, and even footsteps near the edge add dynamic load that encourages a cave‑in.
- Inspect continuously. Start, mid‑shift, after weather changes, and whenever the soil looks or feels different.
If I could go back, I’d refuse that hand‑dig, call in specialists, and spend the day setting up ventilation, shielding, and exits before anybody crawled under. That’s not being cautious—that’s being professional.
The Wall That Came Down
Another day, another “quick setup.” We were on a site where a steel panel had been leaned against a building. The ground was damp from overnight weather. I walked by thinking about the day’s tasks, plugged in a cord, and the next thing I knew I was pinned face‑down with a wall on my shoulders. It missed my head by inches. I did end up needing my shoulder repaired later, but I was lucky to be alive.
What I Should Have Looked For
- Leaning loads with no bracing. If it can tip, it will—especially when the ground is wet or the base isn’t choked.
- Slopes and “looks fine to me” setups. A gentle grade with dew is a slipzone.
- Uncontrolled stored energy. Anything propped up is waiting for gravity to win.
The 10‑Second Hazard Scan (Do It Every Time You Enter a Site)
- Overhead: What can fall, swing, or drop? Panels, pipe racks, buckets on lifts, temporary signage.
- Underfoot: Mud, cords, rebar, open trenches, slippery grass.
- Energy: Live wiring, hot work, pressurized lines, machines just started or about to start.
- Environment: Wind, dew, cold that stiffens hoses, heat that saps attention.
- Escape route: If something goes wrong, where do you move now?
If any answer feels shaky, you stop and fix it before you take another step.
Trapped Under a House
Crawlspaces will lull you into saying, “I’ll just slip under there real quick.” One day under a pier‑and‑beam house, I followed an obvious “path” others had squeezed through before. I was heavier than whoever made that groove. I slid down under a beam and then couldn’t move—forward or back. Chest compressed, breathing shallow, panic rising. No phone. No clear plan. That moment taught me more about working tight than any class ever could.
How I Got Out
I carried a long screwdriver in my pocket—habit I thank God for. I dug out the soil under my chest, a scoop at a time, until I created enough space to breathe and wriggle backward. I went outside, got water and a small hand shovel, and dug a proper channel before trying again. It was humbling. It was also the last time I went under a house without a checklist and a second escape route.
Crawlspace Safety That Actually Works
- Never go alone when there’s a chance you can get pinned or trapped. Post a spotter.
- Bring a low‑profile kit: headlamp, spare batteries, compact hand shovel, long screwdriver or pry bar, utility knife, knee pads, dust mask, gloves, and a compact CO/O₂ monitor if the space is stagnant.
- Plan your path and your retreat. If you must dive under a beam, dig the channel first while you still have full mobility.
- Remove snag points. Tool belts, radios, and bulky jackets catch and wedge. Stage what you don’t need at the entry.
- Control your breathing. If you feel stuck, stop, exhale fully, and try to “flatten” your chest to change your profile. Talk yourself down before you waste energy thrashing.
- Respect old wiring. In older homes you’ll find splices outside of junction boxes, frayed cloth insulation, open neutrals, and mystery circuits. Test before you touch. A non‑contact voltage tester is cheap insurance.
- Watch for critters. Snakes, spiders, and rodents are rare but real. Gloves and lighting aren’t optional.
If you’ve never felt your chest pinned by a beam while your mind sprints toward panic, you don’t want to. Build habits so you never have to find out how you react.
The Hardest Day on a Jobsite
I’ve had bad days. The worst was the day a glazier on the same project died in a boom lift accident. Early morning, top row of glass, hill outside the building. The dew wasn’t much—just enough to make the grass slick. The lift boomed out, reached high, and the base slipped. The fall was sudden and final.
I wasn’t part of that crew, but I was on that site, and it shut the whole project down. We packed up quietly and went home with heavy hearts. It changed the way I look at “quick starts” and early‑morning heroics.
What I Took From That Loss
- Weather isn’t just storms. Dew, frost, and a one‑degree temperature swing change ground conditions.
- Outriggers and mats exist for a reason. If you’re on a slope or soft ground, you spread the load or you don’t go up.
- Harness on, tied off right, always. There isn’t a second chance on a boom lift.
- There’s no shame in waiting. “Give it an hour” beats “call the family.”
You may not operate lifts as a plumber, but you work beside people who do. If you see something that looks wrong, speak up. A culture that listens saves lives across trades.
Make Safety Non‑Negotiable—Here’s How
Safety isn’t a binder; it’s a habit. Here are practical systems you can put in place starting tomorrow.
The Pocket Pre‑Task Plan (60 Seconds)
- Task: What exactly am I about to do?
- Hazards: What can collapse, entrap, shock, cut, crush, or suffocate me?
- Controls: What am I doing to prevent that?
- Communication: Who knows I’m doing it? How do I call for help?
- Outs: How do I get out if something shifts?
Say it out loud. If you can’t answer clearly, you aren’t ready.
Trenching & Tunneling Checklist
- Soil inspected by a competent person before work and whenever conditions change.
- Protective system selected for the soil and depth (sloping/benching/shoring/shielding).
- Spoil pile set back and contained; surface loads kept away from the edge.
- Ladders or ramps within reach—no one climbs walls.
- Second exit if run length or layout makes a single egress risky.
- Water handled proactively—diversion, pumping, and monitoring.
- Atmosphere checked and ventilated when air could be stagnant or contaminated.
- Dedicated top‑side watch with stop‑work authority.
Crawlspace & Under‑House Checklist
- Spotter topside with radio or phone contact.
- Low‑profile PPE and tools staged at entry.
- Pre‑dug channels where clearance is tight.
- Lighting front and back—so you don’t work in your own shadow.
- Electrical hazards identified and de‑energized where possible.
- The exit path was kept clear of debris and hoses.
Jobsite Awareness Checklist
- Leaning materials braced or laid flat; no “temporary” that lasts all day.
- Walkways kept dry; cord routing managed.
- Early‑morning ground conditions reassessed before work at height begins.
- Loud jobs (saws, hammers) coordinated so communication isn’t drowned.
- Everyone knows they can call “stop” without drama.
Gear That Lives in My Bag Now
- Headlamp plus a spare—hands free wins every time.
- Compact entrenching shovel—saves lives under beams and in tight digs.
- Long screwdriver/pry bar—a surprisingly effective earth‑mover in tight spots.
- Non‑contact voltage tester—constant companion around old wiring.
- CO/O₂ monitor—small, loud, and priceless in stale spaces.
- Knee pads and gloves—pain distracts; comfort keeps you smart.
- Dust mask or respirator—rodent droppings and dust aren’t “just gross,” they’re hazardous.
- Two‑way radio—faster than calling through studs or soil.
- Chocks and wedges—to neutralize that “I’ll lean it here” temptation.
- High‑vis tape or cones—mark hazards before someone else finds them with their body.
Conversations That Keep You Alive
Safety isn’t only personal; it’s cultural. Here are phrases that protect crews:
- To a boss or GC: “I can do it safely today, or I can do it fast today—but I can’t do both. Which one do you want?” (Pro tip: put the choice in writing.)
- To a teammate: “Before you crawl in, where’s your second exit?”
- To another trade: “Ground’s slick. Are you planning mats for that lift?”
- To yourself: “If I get stuck, who pulls me out?”
Those aren’t confrontations; they’re professional questions. They build respect over time.
When You’re the Owner or Lead
Leaders set the tone. If you own the company or run the crew:
- Budget for protection. Shoring, trench boxes, fans, monitors—these are tools, not “extras.”
- Train a competent person. Someone must be empowered and qualified to call it.
- Reward safe decisions. If the only thing that gets praised is “fast,” guess what you’ll get?
- Stop saying “be careful.” Replace it with specific controls: “We’re sloping this cut.” “We’re posting a spotter.” “We’re waiting for the dew to burn off.”
- Debrief near misses. No blame, just facts: what happened, why, and what we change tomorrow.
A Few More Hard‑Earned Tips
- Fatigue is a hazard. Tired people skip steps. Hydrate, eat, and pace yourself.
- Phones die. Radios and scheduled check‑ins beat “call me if you need me.”
- Measure your body, not the opening. That “path” carved by a slimmer person isn’t your path.
- Be suspicious of “we’ve always done it this way.” Traditions don’t protect lungs or ribs.
- Respect clay. If you work where clay is king, assume it will hold—and then fail—without warning.
Bringing It All Together
My Most Dangerous Plumbing Job wasn’t defined by depth or drama; it was defined by the decisions made before and during the work. Tunneling under a slab taught me that soil and air don’t care about schedules. A falling panel reminded me gravity doesn’t negotiate. Getting wedged under a beam revealed how panic steals your options—and how a simple tool can give them back. Watching another tradesman lose his life showed me that conditions we call “no big deal,” like dew on a slope, are plenty big.
Here’s what I want for you, your team, and your family:
- Walk every site with your eyes up and your ego down.
- Plan escape routes as carefully as you plan your pipe runs.
- Invest in the gear you hope you’ll never “need.”
- Speak up—across trades and up the chain—when something makes your stomach drop.
- Treat “stop work” like any other tool: use it when you need it.
The trades are full of satisfaction—solving problems, serving people, building things that last. None of that is worth doing if it costs you your life or the life of somebody beside you. Do the job, do it right, and do it safely so you can head home with all ten fingers, your full breath, and your pride intact.
