Setting light poles is EC or rigger job? << If the EC has the bucket/c
rane truck to set the poles, go for it. Who pours the foundation and sets the anchor bolts? EC can't get mad at anyone else if he did the base and bolts aren't set in correct pattern
Running 4" RMC at a 30 foot ceiling - EC or rigger job? << EC-- with a pair of scissor lifts, one at each end of the pipe.
Hanging large luminaire - EC or rigger job? << EC-- with a scissor lift; probably 2 guys up there.
Setting a large switchboard or MCC in place? << EC-- but who drives the fork lift? Don't you have to be 'licensed' to drive one in most plants?
In the operating portion of existing plant, usually, New plant under construction or a new addition with primarily only the construction crews in there maybe not.
Company I worked for had a fireproof safe/vault to be installed, and later, moved. It's about 6' wide, 7' tall, and 4' deep. Weighs the proverbial ton. It was definitely a 'rigger' job!
Was remodeling a bank maybe 25 or so years ago. New vault was built, I was there the day the vault door showed up. I don't recall what it weighed, but they rounded up a fairly large forklift from nearby lumber yard to unload it from the truck. The installers had equipment to handle it once it was off the truck. They tried to lift it and back wheels of fork lift come off the ground. They asked me and a couple other guys working there (from GC's crew) to help. We sat on back end of fork lift to help counter balance it. Might not have been good with OSHA had something gone wrong:blink: All we needed to do was get it off truck, the installers were able to take it from there. This lift should have been able to lift well over a proverbial ton.
When the OP mentioned several 500# displays, I imagined they were electronic display panels, like one of those signboard complexes dangling overhead at the airport-- 3 or 4 screens around a central mount. As someone asked-- how strong is the ceiling?
Hopefully someone else designed for it, OP is primarily an estimator.
I think the decision has to be based on the EC doing the job-- what are their skills, equipment, training, etc. Not every EC has the right mix to do every job.
