

These exposed drains and pipes in my carport have driven me quietly mad for years. They are next door's pipes, just happen to be exposed in my carport. Under shelter all the time, the drains don't get any moisture from my end, just leaves which collect around these raised, uneven surfaces constantly.
I hear the rush of water whenever my neighbours have showers, or run the water in their sinks.
So, a two-part question then; -
1). Is there any reason why I can't cover this with an enclosed lid rather than a grate, since there is no chance of water needing somewhere to drain away in this spot?
2) Can I raise the surface around these bumpy things and make it level? Can I put cement, or some sort of levelling product?
It's very fiddly to have to sweep the leaves individually from every pipe and between them as well.
I'm hoping someone will see this and say, "Yep - easy, just use product X, perfect solution for your problem."
Thank you in advance.