2022-01-09 14:18:37 UTC
A job that will soon reach the top of the pile is making a cattle grid,
primarily to stop the dog from wandering down the drive and on to the
road. It needs to be 4-5m wide and about 2m front-back. I'll probably
cast a concrete trough to put it in, with one side open to an adjacent
dingle so water and hedgehogs can escape, and so it can be hosed-out.
I'm only just starting to think about how to do it, but the current
thought is to get four 2m lengths of I-section for the main supports and
use scaffold pipes for the top surface. The I-sections would sit on
concrete piers to get sufficient depth. I'd weld the pipework in four
sections so it's removable.
Does this sound sensible?
How can I calculate what load a scaffold pipe can take without
The scaffold pipes will be galvanised so I'll be grinding the joint
areas clean before welding, and then spraying with a zinc-rich paint.
How can I protect the I-sections from rust?
Any other thoughts, ideas, considerations?