Drawings show 42 inch trench with HDPE turning up into primary side of transformer Pad.
As Carlon shows 30 X Conduit size radius as min. bending allowed I think factory 90's are required
Anyone have experience with this???
Yooperup

As long as the bends do not decrease the ID of the raceway and do not use a radius less than the manufacturer requires you will be OK I am not sure how you would do this without some sort of mandrel tho. This plastic pipe gets pretty droopy if you just route the exhaust from the truck through it

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Point is you cannot turn a 90 up in 42 inches. I say Factory 90's are required for a correct job install.
Otherwise you come into the transformer pad on a angle.

You are right. I didn't do the math. Good catch.

FPL has a big HDPE job going up at the end of my street. If I can get there before they back fill i will stop by and see how they are getting up the poles.

Remember this is 6 inch. I've got some photos of one done with 6 inch they came in on the side .'
Could not make the bend.

Greg:

Does FPL follow the mfg. instructions??

Pot:

Anyone suggest increasing the trench depth to accommodate the sweeps??

I ask because extended radius sweeps are required by our POCO, and by various Telco/Cable etc. utilities. The solution mostly is 'dig deeper'

They make adapters to put long sweep 90's on which I suggested.
The designer told me they do it all the time in 42 inches.
But I've found out can't be done. This raceway is for 13.8 HV which in itself requires larger
bend for the cable. Just wondered how other have handled something like this.
Thanks for your time guys. Always nice to get others input.

As I said earlier the only way I can see this without kinking the raceway is to heat it and bend it around a mandrel.
Granted this usually happens with PVC.
I looked at the job going on at the end of my street and they are just brute forcing the bends. This is utility work by contractors so I doubt anyone is really inspecting it. The wire was already in the pipe when they make that final turn up. That is not unusual for utility contractors. I watched them running service laterals a while ago and they were threading the wire in the joints of pipe as they went.

Best way would be put large sweep 90's on as suggested by manufacturer but the engineer insist not required.
He said done in 42 inches all the time. I don;t think his every looked at one in the field after completed!
Whatever Right! Carlon show HDPE with couplings and factory 90's on there wed site.