Successful exam on a partially buried structure
Push Dakk CCTV
The Culvert
We were required to carry out a detailed examination of a single barrel culvert. There was no previous detailed examination and no record of the barrel ever been viewed.
On arrival, the culvert was found to be partially buried at both ends.
The Equipment
No off the shelf crawler could fit through the gap so the Push Dakk was used to examine the barrel.
This system incorporates the standard camera and control box used in all the Dakk crawlers but is installed on a small raft.
It could fit through the gap into the barrel and negotiate the large stones on the invert.
The rigid aluminium poles were chosen to allow greater control over the raft.
The Wi Fi was enabled to allow the footage to be viewed on 2 separate screens.
The Team
To carry out the examination a team of one STE4 examiner and one operator was used. The operator pushed the raft through the culvert whilst the STE4 carried out the examination.
The Examination.
Enough debris was dug out to allow the raft to enter and once inside the barrel the clearance began to increase and a full detailed examination was carried out. The barrel was found to be in overall fair condition with rocks and debris on the invert.
Conclusion.
Push Dakk is a bespoke tool that was developed to be used in this type of situation. There is no other type of CCTV equipment that would have succeeded in examining this barrel without costly enabling works to dig out the headwalls.
Once dug out wheeled crawlers would still have struggled to pass the large rocks on the invert. Push Dakk managed it all without any additional cost to the customer.
