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This is really interesting. I wish there were more videos on this channel. I always wanted to know why some manhole covers are triangles, some are circles and others squares.
How we can seal the cover in order to avoid coming rainwater into the manhole?
U avin a laugh hahaha. 2 minute job 1 man
You can visit: ducthang.net/ to see manhole cover
This is really interesting. I wish there were more videos on this channel. I always wanted to know why some manhole covers are triangles, some are circles and others squares.
How we can seal the cover in order to avoid coming rainwater into the manhole?
U avin a laugh hahaha. 2 minute job 1 man
You can visit: ducthang.net/ to see manhole cover