Is it okay to bolt a homemade conduit rack onto my scissor lift rails?

Short version: guardrails on a lift aren't a mounting point for anything. They're built to keep a person inside the platform, not to carry stock. Almost every manufacturer spells that out in the operator's manual, and a rack hanging off the rail is usually an automatic stop-work on union and bigger GC sites. Your safety guy was doing you a favor by not just killing it on the spot.

The plate you're looking for is probaly on the platform itself, near the controls or on the toe board. It'll list the platform capacity, which is people plus material combined. A fabricated rack and a bundle of 3/4 eats into that faster than you'd guess, but the weight is actually the smaller problem. Anything hung outside the deck or stacked to one side moves the center of gravity, and that's what matters when you're extended and reach across to grab a stick. That's also exactly the moment you lean out for material and the machine decides to remind you who's boss.

What's worked for me on similar jobs: keep the bundle inside the rails. Either stand the sticks up in a corner of the deck, or build a low trough that sits flat on the floor and doesn't touch the rails at all. Rental houses often have material caddies that sit in the platform if you're on rented iron. Cut your sticks so nothing hangs past the toe board and you won't have anything whipping around at height either.

Since it's a warehouse job, see if the rental company or the manufacturer will send the manual for that exact model. If the manual says no attachments to the rails, you've got your answer in writing and you can show the safety guy you handled it. He gave you the out, take it. Losing the rack is cheap compared to what happens when a loaded boom tips or a stick drops onto somebody below.

Following this one because I only rent a scissor lift a couple times a year for side jobs and never thougth twice about hanging stuff off the rails. Last time I zip tied a bucket tray to one and the rental place dinged me for it on return, so now I'm guessing a bolted rack would be the same deal or worse. Question for the guys doing this daily, when you stand the bundle up in a corner of the deck like the other poster said, how do you stop it walking around when you drive? I tried a bungee over mine once and the whole thing shifted when I crossed a floor seam.

Been bending conduit since before lifts were common on sites, and the old way still works fine. Cut everthing to length on the deck first, then only bring up what you need for that run. A half dozen sticks tucked against the rail never gave me trouble, but I never hung nothing off it either. We used to have a ground guy toss sticks up one at a time, catch them clean before they got away from you. Slow, but nobody ever dropped a stick on the boss's truck that way either.

Update: took the rack off the rail, not worth arguing about it. Started doing what the old-timer here suggested, cutting everything to length on the deck and only carrying up what the run needs. That part's been working. Still stuck on keeping the handful of sticks up there from rolling around every time I move the lift. Any tricks for that besides leaning them in a corner and hoping?