You need to give more info than simply "rigid pipe". What kind of "rigid pipe", what pressure will it have and where you are burying it.
The threads
RSC pipe - Rigid Steel Conduit (RSC) can be installed indoors or outdoors, in dry or wet locations, exposed or concealed, in all kinds of atmospheric conditions, and in hazardous locations.
Assuming your reference to "earthing" is grounding (Grounding Electrode Conductor), a pipe is, as it sounds, a pipe (i.e. water pipe). A plate would be, as it sounds, a square (or rectangular) copper plate which would be buried in the ground.
A GRP (Glass Reinforced Plastic) pipe of 800 mm diameter may become deshaped and reduce to 600 mm when buried at a depth of 2 meters due to factors such as insufficient soil support, external soil pressure, and inadequate pipe stiffness. Over time, the external loads combined with the pipe's material properties can lead to deformation and bulging, particularly if the backfill material is not properly compacted or if the installation did not account for environmental conditions. Additionally, prolonged exposure to stress and strain can weaken the pipe, exacerbating the deformation.
It is not advisable to bury a galvanized gas lineMost civilized codes will not allow galvanized piping to be buried under ground even for waste or venting it is against good plumbing practices. I have seen quite a bit of buried galvanized pipe, both for water and gas. It does rust out eventually. Interestingly enough, it usually rusts through at point at which it comes up out of the ground.
No, it is not.
The threads
Masts need to be RIGID.
A 770 Greenlee hydraulic pipe bender bend is used for rigid steel conduit from 2" to 4".
Water
Yes, PEX pipe can be buried underground as it is commonly used for underground water supply lines.
Yes it should be
Yes.
24 inches.
24 inches.
Did you say im hung like a Pvc pipe? Danny Reeve x
Sir Walter Raleigh was buried with a pipe and tobacco. His coffin was also "lined throughout with the wood of my old Havana cigar-boxes."