How to install an Underground Drainage System - OHOB Training Academy

The installation of an inspection chamber with connected pipes requires correct calculations and measurements, in this video we have Ray and Cristian, both groundworkers for O’Halloran & O’Brien Construction, explain and demonstrate how this installation is completed correctly.
This video is in our 'How to install underground drainage' series. Watch all of the videos in the series to get a good beginner's understanding of how drainage systems should be installed in the UK.
Here at Drainfast, we have partnered with the OHOB Training Academy to produce a series of videos to show how to install underground drainage for beginners and how to begin a career in the construction industry.
The O’Halloran & O’Brien Construction Training Academy is a world-class training facility tailored to deliver excellence and replicate a construction environment, providing multi-dimensional skills training interventions to the highest standards.
Drainfast: drainfast.co.uk/
SiteStak www.sitestak.co.uk/
OHOB Training Academy: ohobtrainingacademy.co.uk/
O'Halloran & O'Brien www.ohob.com/
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[@TheNomadBuilder]

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?

[@drainfast-uk]

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 kzbin.info/www/bejne/fKaxi6t-gKmXgbs

[@uniqueglobalnetwork]

What is the unit you measur in tape ??? Is it mil?

[@drainfast-uk]

Yes, millimeters

[@ianhoward4246]

I've been on site almost 40 years... I've never seen a chamfering thingy!!

[@drainfast-uk]

www.drainfast.co.uk/products/accessories/hand-tools/110mm-pipe-chamfer-tool It's a handy tool to have