CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
Drain-Clear
206 Hutton Road
Shenfield
Essex
CM15 8NR
0800 9777 588
CCTV DRAINAGE
INSPECTION REPORT
Site Address:
117 – 123 Gosbeck Road,
Colchester,
CO2 7GZ
Client:
Mr. Michael Lau
Surveyor:
Ricky Smith and Craig Mantle
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
Survey Notes:
1. All distances and percentages are approximate and refer to the on-screen meter-age.
2. The clock reference is used to indicate where faults are located, relative to the absolute position of the invert (bottom) of
the pipe. That is to say that the soffit (top) of the pipe is at 12 O’clock, the invert of the pipe at 6 O’clock the right edge at 3
and left at 9.
3. The condition(s) of the drain(s) observed in this report are that of the day(s) of survey only.
4. DrainClear has made every concerted attempt to produce a qualitative and quantitative survey, outlining all the significant
faults and where applicable, their appropriate remedial actions. However, we cannot accept any liability for any
misinterpretation by third parties of the information contained herein.
5. A DVD of the on-site footage obtained.
6. Key codes as follows:
FW = Foul Water
SW = Surface Water
U/S = Up Stream
D/S= Down Stream
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
CCTV DRAINAGE SURVEY REPORT
Of
117 – 123 Gosbeck Road,
Colchester,
CO2 7GZ
Introduction
We were commissioned to do this survey for a general condition report, with regards of the above address.
Rick Smith and Craig Mantle of Drain Surveyors London carried out the survey.
General Comments
This report covers all drainage runs surveyed on the 11th June 2014.
Survey Report
On arrival, the property was assessed to be a commercial site.
The following points were found during the survey:
We have surveyed from FWMH1a downstream. No service affecting defects were found.
We then surveyed from FWMH1a upstream. Defects were found here including a fracture and root
ingress.
Further Works Advised
We would remove the roots using 4000psi high power water jetting equipment for up to two
hours. Once removed, we would insert a Localine® Patch Repair, at approximately 6.7m
downstream from FWMH1a. We would then re-survey the drain to assess the condition of the
rest of the drain and provide a permanent repair solution, which may include lining the drain
run.
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
We then surveyed from FWMH1 upstream to SVP. No service affecting defects found.
We then surveyed from FWMH1 Branch 1. No service affecting defects found.
We then surveyed from FWMH1 downstream to FWMH2. Defects were found here including a
crack.
Further Works Advised
We would insert a Localine® Patch Repair, at approximately 9.80m upstream from FWMH1.
We then surveyed from FWMH2 Upstream. Defects were found here including attached deposits.
Further Works Advised
We would remove the deposits using 4000psi high power water jetting equipment and/or
electromechanical machinery equipped with cutting and grinding blades for up to two hours.
Once removed, we would re-survey the drain to assess the condition of the rest of the drain and
provide a permanent repair solution, which may include lining the drain run.
We then surveyed from FWMH2 downstream to FWMH3. Defects were found here including
fractures, displaced joints and cracks.
Further Works Advised
We would insert a Brawoliner lining system for up to 10m from FWMH2 towards FWMH3. We
would then insert a 1m long Localine Patch Repair at approximately 17.4m downstream from
FWMH2.
We then surveyed from FWMH3 Branch 1.This is a capped run.
Further Works Advised
We would cap this run within the manhole.
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
We then surveyed from FWMH3 downstream to FWMH5. Defects were found here including cracks,
breaks and a displaced joint.
Further Works Advised
We would remove insert an Epoxy/Silicate lining system for up to 7m from FWMH3 towards
FWMH5. We would then insert an Epoxy/Silicate lining system for up to 10m from FWMH5
towards FWMH3. We would then insert a Localine Patch Repair at approximately 15.8m
downstream from FWMH3.
We then surveyed from FWMH5 downstream to Mains. Defects were found here including a
displaced joint.
Further Works Advised
We would insert a Localine 90 Patch Repair at approximately 15.8m downstream from
FWMH5.
We then surveyed from FWMH4 upstream to gully. Defects were found here including a displaced
joint, a crack, a fracture, a hole and a break.
Further Works Advised
We would insert an Epoxy/Silicate lining system for up to 6m downstream from Gully.
We then surveyed from FWMH5 downstream to Mains. Defects were found here including a
displaced joint.
Further Works Advised
We would insert a Localine 90 Patch Repair at approximately 15.8m downstream from
FWMH5.
We also noticed that the gully connecting onto this run is broken. We would suggest that this
gully is replaced.
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
Conclusion
Based on the ‘Drain Repair Book’ published by the Association of British Insurers in conjunction with the
Water Research Council. (W.R.C.) We have classified the following runs as follows:
1. SWMH1 to Mains as Grade B “Unserviceable”.
2. SWMH1 Branch 1 as Grade B “Unserviceable”.
3. SWMH1 Branch 2 as Grade C “Unserviceable”.
4. SWMH1 to Acro as Grade B “Serviceable”.
5. SWMH2 Branch 1 as Grade B “Unserviceable”.
6. SWMH2 Branch 2 as Grade C “Unserviceable”.
7. SWMH2 to SWMH3 as Grade B “Unserviceable”.
8. SWMH3 to SWMH4 as Grade B “Unserviceable”.
9. SWMH3 Branch 1 as Grade B “Serviceable”.
10. SWMH4 upstream as Grade B “Unserviceable”.
11. FWMH1 Branch 1 as Grade B “Unserviceable”.
12. FWMH1 Branch 2 as Grade B “Unserviceable”.
13. FWMH1 Branch 3 as Grade B “Unserviceable”.
14. FWMH1 Branch 4 as Grade B “Unserviceable”.
15. FWMH1 to FWMH2 as Grade B “Unserviceable”.
16. FWMH2 to FWMH3 as Grade B “Unserviceable”.
17. FWMH2 Branch 1 as Grade B “Unserviceable”.
18. FWMH2 Branch 2 as Grade B “Unserviceable”.
19. FWMH2 to FWMHIC as Grade B “Serviceable”.
20. FWMHIC Upstream – CAPPED RUN
21. FWMH3 Upstream as Grade C “Unserviceable”.
22. FWMH3 Branch 1 as Grade B “Unserviceable”.
23. FWMH3 to FWMH4 as Grade B “Unserviceable”.
24. FWMH4 Branch 1 as Grade A “Serviceable”.
25. FWMH4 to FWMH as Grade B “Unserviceable”.
26. FWMH5 Upstream as Grade B “Serviceable”.
27. FWMH6 Branch 1 as Grade B “Unserviceable”.
28. FWMH6 Branch 2 as Grade B “Unserviceable”.
29. FWMH6 Branch 3 as Grade A “Serviceable”.
30. FWMH6 Branch 4 as Grade B “Unserviceable”.
31. FWMH6 to FWMH5 as Grade B “Unserviceable”.
32. SWMH1a to SW Gully as Grade B “Unserviceable”.
33. SWMH1a to SW Gully 2 as Grade B “Unserviceable”.
34. SWMH1a Branch 2 as Grade B “Unserviceable”.
35. FWMH1a Upstream as Grade C “Unserviceable”.
36. FWMH1a Branch 1 as Grade B “Unserviceable”.
37. FWMH1a to FWMH2a as Grade B “Unserviceable”.
38. CWMH2a to CWMH as Grade B “Unserviceable”.
39. CWMH2a to CWMH3a as Grade B “Unserviceable”.
40. CWMH2b to SWMH1a as Grade B “Unserviceable”.
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
CWMH2b Upstream as Grade A “Serviceable”.
CWMH2b to CWMH3b as Grade B “Unserviceable”.
CWMH3a to CWMH4a as Grade B “Unserviceable”.
CWMH3b to CWMH4b as Grade B “Unserviceable”.
CWMH4b to CWMH5b as Grade B “Unserviceable”.
CWMH4a Branch 1 as Grade B “Unserviceable”.
CWMH4a to CWMH5a as Grade B “Unserviceable”.
CWMH5b Branch 1 as Grade A “Serviceable”.
CWMH5b Branch 2 as Grade C “Unserviceable”.
CWMH5b Branch 3 as Grade C “Unserviceable”.
Further works have only been advised where we have classified a drainage run as unserviceable and are
provided as an impartial opinion to offer our clients the necessary information required to make a decision
upon the future use or work needed upon the drainage network.
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
Recommendations and Quotation
Please find our ‘Quotation’ for the works required to re-instate full and correct working order to the above
system. This ‘Quotation’ covers all materials and labour required to carry out the recommended work.
All ‘Quotations’ are valid for 12 weeks and will be honoured if works are booked before the expiry period.
This period is set due to the progressive nature of subterranean faults. If your ‘Quotation’ has expired, reinspection of the system will be required to be undertaken before any work commences and depending on our
findings, the ‘Quoted’ figures and ‘Recommendations’ will be altered to fit our new findings.
To remove the roots using 4000psi high power water jetting equipment £
for up to two hours from FWMH1a upstream
140.00
To insert a Localine® Patch Repair, at approximately 6.7m upstream £
from FWMH1a
361.00
To re-survey the drain to assess the condition of the rest of the drain £
from FWMH1a upstream
-
To insert a Localine® Patch Repair, at approximately 9.80m upstream £
from FWMH1 towards FWMH2
361.00
To remove the deposits using 4000psi high power water jetting £
equipment and/or electromechanical machinery equipped with cutting
and grinding blades for up to two hours from FWMH2 upstream
150.00
To re-survey the drain to assess the condition of the rest of the drain £
from FWMH2 upstream
-
To insert a Brawoliner lining system for up to 10m from FWMH2 £
towards FWMH3
1,240.00
To insert a 1m long Localine Patch Repair at approximately 17.4m £
downstream from FWMH2 towards FWMH3
451.25
To cap FWMH3 Branch 1 within the manhole
£
50.00
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
To insert an Epoxy/Silicate lining system for up to 7m from FWMH3 £
towards FWMH5
616.00
To insert an Epoxy/Silicate lining system for up to 10m from FWMH5 £
towards FWMH3
880.00
To insert a Localine Patch Repair at approximately 15.8m downstream £
from FWMH3
361.00
To insert a Localine 90 Patch Repair at approximately 15.8m £
downstream from FWMH5
592.00
To insert an Epoxy/Silicate lining system for up to 6m downstream from £
Gully
528.00
To insert a Localine 90 Patch Repair at approximately 15.8m £
downstream from FWMH5
592.00
To remove and replace the gully
£
293.00
Sub Total
£
6,615.25
VAT (20%)
£
1,323.05
Total
£
7,938.30
Time Scale of Works
Works are expected to take 2 technicians to complete and lining works come with a 10 year guarantee
against further structural depreciation and root intrusion.
Should you have any queries regarding the content of this report; have not received a DVD; or wish to go
ahead with the repairs, then please contact Drain Clear on 0800 977 7588 quoting the above survey reference.
Queries and missing DVD’s must be reported within 7 days of the report being sent.
All Distance Measurements are Approximate
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
Below are some ‘Frequently Asked Questions’ relating to your drainage system. If you require any further
information or are not satisfied with the answers below, please do not hesitate to contact us and we will do our best to
help.
What is Vitrified Clay Pipe Work?
The most common form of drainage in the UK is usually found in sizes from 110-225mm on domestic systems and typically
runs in lengths of around 500mm to 1m. They traditionally have a collar at one end and a spigot at the other, the spigot is
pushed into the collar of the next pipe in a downstream position and then jointed. Designed by the Victorians, a lot of these
systems are still in use today, and if there had been specification when it came to pipe bedding and back filling, a lot more
would have survived. Vitrified Clay is an earthen ware and brittle; the jointing methods made the systems rigid and any
movement on the system or the surrounding sub-soil will lead to stress fractures, while a half brick carelessly tossed in the
trench during back fill could also undo a lot of good work. The sand and cement joints offer little resistance to persistent and
hungry tree roots and the resulting weeping and leaking joints erode the very sub-soil that the pipes relied on for structural
support.
What is Underground (UPVC) Plastic Pipe Work?
Modern underground plastic pipe work has an ultra-smooth finish and with pipe lengths of up to 6mtrs there are fewer joints
on long runs all adding to the great hydraulic properties on such systems. This pipe is also known as ‘UPVC’. Every item
from pipes, to gullies and bends, through to pre-formed chamber basis, anti -flood valves and pump houses are available in
plastic. Much lighter than clay and cast iron pipe work this is an ideal product for quick installation. Good pipe bedding is
essential in its installation as the pipe work maintains its structural strength through the granular fill surrounding it, unlike
other products that fracture and crack when under external pressure plastic pipe work will deform to a point before failing,
certain authorities now insist on pipe profiling before adopting such systems to ensure that the installed pipe work is within
the set guidelines with regard to an expectable amount of deformation.
Cleaning UPVC (Plastic) Pipes
There have also been questions asked about the pipes suitability to being cleaned and maintained by high pressure water
jetting techniques, but I have personally not come across any defects that could be attributed to excessive water jetting
pressures, I have no doubt that if you went at a system long enough with 20/30,000 psi you could do some serious damage
but most domestic jetting units happily chug along at 3 to 4,000 psi and will not pose any great threat to a properly installed
system. There are many types of plastic pipe work, for many types of application, whether that be a thin walled pipe for
domestic systems, twin wall or ribbed systems for highways and road installation and systems and products designed to
operate in harsher industrial environments such as vulcathene which is often used in hospital and laboratory environments,
there
are
no
records
of
damage
caused
by
water
jetting.
What is Re-Lining?
Re-lining is a no-dig technology that allows repairs to be carried out, without excavation of the subterranean drainage
system. CIPP (cured in place pipe) Lining is the most commonly used drain lining technique on domestic drainage
systems within the UK. A resin soaked liner, similar to GRP (glass reinforced plastic), is inserted into the drain, in the
required position and then a calibration hose is placed within the liner and used to inflate the liner, under air or water
pressure to the size required. Once the resin has cured, a permanent repair is achieved. There are no joints in the re-lined
section of drain thus preventing any sub-soil intrusion and drain leakage within the repaired section. A re-lined section of
clayware drain can have an improved efficiency of up to 147%, resulting in greatly improved dynamics and flow rates. The
re-line takes no structural strength from the original pipe and in all cases will be superior in quality and strength to the pipe
in which it lines.
Can My Drain Be Re-Lined?
Every site is different and the key to a successful Cipp Liner Repair is the initial investigation works and a detailed drain
camera inspection is vital, from this you can assess the cause of the problem and the Drain Lining Method best suited to that
specific site. Special consideration should be given to foul drainage systems particularly on smaller diameter pipe work and
there is generally more tolerance on storm water systems where snagging of solids will not be an issue. In most instances
CCTV Drainage Inspection Report
Survey Ref: CM11062014
Survey Date: 11th June 2014
lining can be undertaken, but it will only by utilised by Drainclear if it is the most beneficial and cost effective option for
your system. Your technician will discuss your options with you.
What is a Hydro-scrub?
To carry out a hydro-scrub of a network, is to treat the network with cleaning solution and then wash and de-scale using a
high pressure water jetting. To wash the network and de-scale, is to remove attached and settled deposits within network,
while thus reinstating the network to a standard level of cleanliness prior to any re-lining works taking place, or to regain
flow through a system because of blockage. A hydro-scrub is also used in conjunction with a CCTV survey, in order to clean
and exposed the pipe walls, so that a clearer image is observed and an accurate condition of the system can be obtained.
Hydro-scrubs are normally carried out using water pressures of 1,500 to 4,000 psi, together with specialist jetting heads.
Site Requirements
Full access will be required to drainage system and chambers along system that requires repair during works and in this
instance this would require access to the rear of the property. A 240v power supply and water connection, are required to
carry out the above works. If these requirements are not possible to be supplied by yourself, alternate sources of water and
power will be source by Drainclear, with a 5% addition to the quoted price. And only if prior notice has been given that
power and water is not available on site.
Health and Safety for Everyone
Drain Clear takes ‘Health and Safety’ very seriously and request that our technicians are given the time and space to carry
out their tasks, un-restricted by others. There are some serious Health and Safety issues to be considered when working in the
drainage environment, signs of which can be missed if distracted by others. This is why we ask that the work area is cleared
of any non-essential persons, for your own and our safety and to reduce any contact with…..
Biological Agents;
Working on drain and sewer systems will at some stage bring you into contact with stagnant and waste water that harbour
such delights as viruses, bacteria, fungi, parasites and numerous other micro-organisms, if you manage to dodge that lot there
is always the risk of coming across a discarded needle or syringe. The aforementioned can lead to any of the following;
Leptospirosis (Weils Disease);
Rats’ urine or infected water coming into contact with breaks in the skin can lead to this potentially fatal bacterium. Flu like
symptoms, fever, headaches and vomiting can lead to meningitis and kidney failure.
Hepatitis A, B and C;
Bodily fluids that may be contaminated with blood coming into contact with broken skin can lead to the above conditions as
can splashes to the eyes, nose, mouth or hand to mouth contact.
Tetanus (Lock Jaw);
Again spores that come into contact with broken skin can lead to uncontrolled muscle spasms or lock jaw.
Toxicara Canus
This parasite is a roundworm that in its worst cases can lead to blindness
All the above makes for grim reading but thankfully we don`t hear of too many cases being directly linked to sewer and
drainage works, because as standard practice in the industry we wear the correct clothing and PPE (Personnel Protective
Equipment) such as gloves, overalls and masks when working on these systems.
PPE
DrainClear will supply all PPE and materials to carry out works and will make every concerted attempt to produce
qualitative and quantitative works and where applicable, inform you of any further, appropriate remedial actions if
applicable.