Why put rockers before/after a manhole when it has a granular base? Rockers are to offer flexibly when drainage passes through a solid eg concrete structure (When you muck in the rat runs). Pointless on a manhole when surrounded by single?
Good point, it wasn't mentioned in this video but the inspection chamber base normally get concreted into position - hence the need for rocker pipes. As mentioned here ua-cam.com/video/FuNZxHKDdKY/v-deo.html
Good information bather thanks
How come you don't put concrete base on manhole
Why put rockers before/after a manhole when it has a granular base? Rockers are to offer flexibly when drainage passes through a solid eg concrete structure (When you muck in the rat runs). Pointless on a manhole when surrounded by single?
Good point, it wasn't mentioned in this video but the inspection chamber base normally get concreted into position - hence the need for rocker pipes. As mentioned here ua-cam.com/video/FuNZxHKDdKY/v-deo.html
What is the unit you measur in tape ??? Is it mil?
Yes, millimeters
25mm per meter ?
All this equipment fine for site work no good for extentions.
Dude every time u guys measure stuff off brickwork and a spirit level just makes me so uneasy lol use a laser!!!!!
I've been on site almost 40 years... I've never seen a chamfering thingy!!
www.drainfast.co.uk/products/accessories/hand-tools/110mm-pipe-chamfer-tool
It's a handy tool to have