He's a real nowhere man, Sitting in his Nowhere Land, Making all his nowhere plans
CORNWALL DRAINS · 20/02/2014 no rain or snow 1 X no rain or snow no Nowhere Nowhere Street...
Transcript of CORNWALL DRAINS · 20/02/2014 no rain or snow 1 X no rain or snow no Nowhere Nowhere Street...
CORNWALL DRAINS
1 PENDENNIS ROAD PENZANCE
CORNWALL TR18 2BA
TEL: 01736 449424 MOB: 07889003429
Address: Date: 29th July 2014 Mrs. Sample Nowhere Nowhere Street
Tel: Mob:
Dear Mrs. Sample As requested we have attended the above property following the unblocking of the foul water drainage system & have facilitated a CCTV survey of the main foul water drainage system within the area of the blockage also within the property boundary & outline our findings below. Foul Water Drainage System. MH4 Interceptor d/stream to Property Boundary. The drain is constructed from 100mm diameter clay & the depth of Interceptor manhole MH4 is 1.03mtrs. The CCTV survey was conducted from Interceptor manhole MH4 downstream to the property boundary which is located at approximately 8.90mtrs downstream from the manhole. Root ingress is evident throughout the drain & also within Interceptor manhole MH4, the drain is also cracked at 1.50mtrs & fractured at 3.40mtrs downstream from manhole MH4, beyond the property boundary the drain becomes the responsibility of the local water authority South West Water.
Recommendations. We advise the Interceptor Trap is excavated & removed to provide access to remove the root ingress & High Pressure Water Jet clean the drain prior to the installation of a 100mm diameter silicate resin liner from manhole MH4 downstream to the property boundary for a distance of approximately 8.90mtrs to prevent further root ingress.
MH3 d/stream to MH4. The drain is constructed from 100mm diameter clay & the depth of manhole MH3 is 0.66mtrs. The CCTV survey was conducted from manhole MH3 downstream to Interceptor manhole MH4. Severe root ingress is evident throughout the section of 100mm diameter clay drain & also within manhole MH3. Recommendations. We advise the root ingress is removed from the drain & manhole, the drain is High Pressure Water Jet cleaned prior to the installation of a 100mm diameter polyester resin liner from manhole MH3 downstream to manhole MH4 for a distance of approximately 23.60mtrs to prevent further root ingress. Repair Methods. We have advised the above type of lining repairs as we consider them to be the most cost effective which alleviates the requirement for extensive excavation & replacement, this type of trench less repair will also avoid damage to mature gardens & surface areas.
Cause of Damage. The damage to the above sections of 100mm diameter clay foul water drain have been caused by root ingress growing through the joints of the drain from the trees which are located within the vicinity of the drainage system.
Quotation. MH4 Interceptor d/stream to Property Boundary. Excavate, remove interceptor Trap & replace with straight section of 110mm diameter plastic pipe, surround new pipe with pea gravel £ Remove root ingress & High Pressure Water Jet clean drain prior to installation of lining repair £ Install a 100mm diameter polyester resin liner from manhole MH4 d/stream to property boundary for a distance of approximately 8.90mtrs £ Repair sides of manhole where roots have ingressed £
MH3 d/stream MH4. Remove root ingress & High Pressure Water Jet clean drain prior to installation of lining repair £ Repair sides of manhole where roots have ingressed £ Install a 100mm diameter polyester resin liner from manhole MH3 d/stream to MH4 for a distance of approximately 23.60mtrs £
Make good excavations & removal of excess spoil £ Sub Total £ Vat £ Total £ Please Note: Due to the nature of working underground it is not possible to state conclusively that there will be no further damage discovered once the repairs are commenced, if this occurs, we will make all efforts to mitigate the costs and seek the authority through the appropriate channels before carrying out additional repairs. The costs to facilitate the above work is inclusive of all labour, materials & for the disposal of excess spoil from site on completion of the remedial repairs. If you wish to proceed with the above works we will require confirmation via email or in writing & payment will be required on completion. Should you require any additional information please do not hesitate to contact me at the above address. Yours Sincerely
Gary Tonkin T/A CORNWALL DRAINS
Cornwall Drains
SampleSurvey
30 July 2014
WinCan Europe Ltd, 10 Woking Business park, Albertdrive, Woking, GU21 5JYTelephone 01483762222 Facsimile 01483 762226
www.wincaneurope.com
GRADE 3,4 & 5 Summary¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯STRUCTURAL DEFECTS
Structural defectsSectionPLR Grade Fault descriptionAcceptable Structural ConditionGrade 3; Best practice suggests consideration be given to repair in the medium termGrade 4; Best practice suggests consideration be given to a repair to avoid potential collapseGrade 5; Best practice suggests this pipe is at risk of collapse at any time; urgent consideration should be givento a repair to avoid collapse
SERVICE / OPERATIONAL DEFECTS
Service defectsSectionPLR Grade Fault descriptionAcceptable Service ConditionGrade 3; Best practice suggests consideration be given to maintenance activities in the medium termGrade 4; Best practice suggests consideration be given to maintenance activity to avoid potential blockageGrade 5; Best practice suggests this pipe is at immediate risk of backing up / causing flooding
Abandoned Surveys
Camera no accessSectionPLR Fault descriptionAll Surveys Completed
Information
These summaries are based on the SRM grading from the WRC
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Project-informationProject name : Project Number : Contact : Date :SampleSurvey 20/02/2014
SampleSurvey // Page: 1
Client:Contact Name:Department:Road:Town:County:Telephone:Fax:Mobile:E-mail:
Mrs SampleMrs SampleOwnerNowhere StreetNowhereCornwall
Site:Contact Name:Department:Road:Town:County:Telephone:Fax:Mobile:E-mail:
Mrs SampleMrs SampleOwnerNowhere StreetNowhereCornwall
ContractorContact Name:Department:Road:Town:County:Telephone:Fax:Mobile:E-mail:
Cornwall DrainsGary Tonkin
1 Pendennis RoadPenzanceCornwall TR18 2BA01736 449424
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Project-informationProject name : Project Number : Contact : Date :SampleSurvey 20/02/2014
SampleSurvey // Page: 2
Cornwall Drains 1 Pendennis RoadStreet : PenzanceTel: 01736 449424
Fax: Email: [email protected]
City : Nowhere
Legend of Drawing:
WATER FLOW 1 Tree_Winter
Tree_Summer CESS PIT
SOAKAWAY: FOUL WATER GNDFLWC
SURFACE WATER SYPHON INTERCEPTOR
PETROL INTERCEPTOR PIPE RUN
RAINWATER PIPE ROAD GULLY
RODDING EYE SEPTIC TANK
SOIL & VENT PIPE COMBINED
SOAKAWAY: SURFACE WATER GULLY
W.C. PUMP CH
FOUL WATER
SampleSurvey // Page: 3
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: [email protected]
Place :
Defect Grade DescriptionProject Name : Project number : Contact : Date :SampleSurvey 20/02/2014
SampleSurvey // Page: 4
1: Brick: No Structural DefectsPipe: No Structural Defects
Acceptable Structural Condition
2: Brick: Minor cracking, Surface mortar loss, Spalling slight, wear slightPipe: Circumfrential crack, Moderate joint defects, Spalling slight, Wear slight
Minor collapse risk in short term but potential for further deterioration
3: Brick: Total mortorloss without other defects, single brick displaced, Deformation up to 5%,Spalling medium, Wear mediumPipe: Fractures with deformation up tp 5%, Longitudinal cracking or mulitlpe cracking, Minorloss of level, More severe joint
! Collapse unlikely in near future but future deterioration likely !
4: Brick: Total mortorloss with deformation greater than 10%, Deformation up to 10% andfractured, Displaced/hanging brickwork, Small number of missing bricksPipe: Broken, Deformation up to 10% and broken,, Fractured with deformation 5 - 10%,Multipl
!! Collapse likely in foreseeable future !!
5: Brick: Already Collapsed, Missing invert, Deformation over 10% and fractured,Displaced/hanging brickwork and deformation over 10%, Extensive missing bricksPipe: Already collapsed, Deformation over 10% and broken, Extensive areas of fabric missin
!!! Collapsed or collapse imminent !!!
Cornwall Drains 1 Pendennis RoadStreet : PenzanceTel: 01736 449424
Fax: Email: [email protected]
Inspection reportDate : Job number : Weather : Operator : Section number : PLR SUFFIX:
Weather Vehicle : Camera : Preset : Cleaned : Operator :
Place : Location details: U/S MH :Road : Catchment: U/S Depth :Location Tape number : D/S MH :Inspection Pipe Length D/S Depth :
Use: Pipe shape :Year laid : Pipe size :Purpose : Pipe material :Total length : Lining :
Comment :
20/02/2014 no rain or snow 1 X
no rain or snow no
NowhereNowhere StreetProperty with buildingsMH4 (D/S) Boundary
MH41.03Boundary
Combined
Investigation of operational problem8.90 m
Circular100 mmVitrified clay
Roots, Fractured, Cracked
1:54 Position Observation
SampleSurvey // Page: 5
0.00 Start node type, manhole, reference number : MH1 Remarks: d/streamthrough Interceptor Trap to property boundary
0.00 Water level, 0% of the vertical dimension
0.00 General remark Remarks: Root ingress through sides of manhole
0.20 Junction, at 6 o'clock, diameter 100mm Remarks: Interceptor Trap
0.30 Roots, fine at joint Remarks: at outlet of Interceptor trap
0.80 Roots, mass at joint, 40% cross-sectional area loss Remarks: restrictingflow
1.50 Roots, fine at joint
1.50 Crack, circumferential at joint, from 10 to 3 o'clock
2.20 Roots, fine at joint
2.70 Line deviates left Remarks: 11degs approx
2.70 Line deviates down Remarks: 5degs approx
3.40 Roots, mass at joint, 15% cross-sectional area loss
3.40 Fracture, circumferential at joint, from 1 to 8 o'clock
4.00 Roots, fine at joint
4.60 Roots, fine at joint
MH4
Depth: 1.03
0 m
0.2 m
0.3 m
0.8 m
1.5 m
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Inspection ReportDate : Job number : Weather : Operator : Section number : PLR :
Weather Vehicle : Camera : Preset : Cleaned : Grade:20/02/2014 no rain or snow 1 X
no rain or snow no
1:54 Position Observation
SampleSurvey // Page: 6
5.20 Roots, fine at joint
5.20 Line deviates right Remarks: 5degs approx
5.90 Roots, fine at joint
6.40 Roots, fine at joint
7.00 Line deviates left Remarks: 15degs approx
8.90 Finish node type, other special chamber reference number: BoundaryRemarks: Property Boundary
Boundary
STR no def STR peak STR mean STR total STR grade SER no def SER peak SER mean SER total SER grade0 0 0 0 1 0 0 0 0 1
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 1 X
SampleSurvey // Page: 7
Photo: 1_1_1_A.jpg0m, Start node type, manhole, reference number : MH1 Remarks: d/stream through Interceptor Trap to propertyboundary
Photo: 1_1_6_A.jpg0.2m, Junction, at 6 o'clock, diameter 100mm Remarks: Interceptor Trap
Photo: 1_1_7_A.jpg0.3m, Roots, fine at joint Remarks: at outlet of Interceptor trap
Photo: 1_1_8_A.jpg0.8m, Roots, mass at joint, 40% cross-sectional area loss Remarks: restricting flow
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 1 X
SampleSurvey // Page: 8
Photo: 1_1_9_A.jpg1.5m, Roots, fine at joint
Photo: 1_1_10_A.jpg1.5m, Crack, circumferential at joint, from 10 to 3 o'clock
Photo: 1_1_11_A.jpg2.2m, Roots, fine at joint
Photo: 1_1_12_A.jpg2.7m, Line deviates left Remarks: 11degs approx
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 1 X
SampleSurvey // Page: 9
Photo: 1_1_14_A.jpg3.4m, Roots, mass at joint, 15% cross-sectional area loss
Photo: 1_1_16_A.jpg4m, Roots, fine at joint
Photo: 1_1_17_A.jpg4.6m, Roots, fine at joint
Photo: 1_1_19_A.jpg5.2m, Roots, fine at joint
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 1 X
SampleSurvey // Page: 10
Photo: 1_1_21_A.jpg5.9m, Roots, fine at joint
Photo: 1_1_22_A.jpg6.4m, Roots, fine at joint
Photo: 1_1_24_A.jpg7m, Line deviates left Remarks: 15degs approx
Photo: 1_1_25_A.jpg8.9m, Finish node type, other special chamber reference number: Boundary Remarks: Property Boundary
Cornwall Drains 1 Pendennis RoadStreet : PenzanceTel: 01736 449424
Fax: Email: [email protected]
Inspection reportDate : Job number : Weather : Operator : Section number : PLR SUFFIX:
Weather Vehicle : Camera : Preset : Cleaned : Operator :
Place : Location details: U/S MH :Road : Catchment: U/S Depth :Location Tape number : D/S MH :Inspection Pipe Length D/S Depth :
Use: Pipe shape :Year laid : Pipe size :Purpose : Pipe material :Total length : Lining :
Comment :
20/02/2014 no rain or snow 2 X
no rain or snow no
NowhereNowhere StreetProperty with buildingsMH3 (D/S) MH4
MH30.96MH41.03
Combined
Investigation of operational problem23.60 m
Circular100 mmVitrified clay
Roots
1:108 Position Observation
SampleSurvey // Page: 11
0.00 Start node type, manhole, reference number : MH3 Remarks: d/stream
0.00 Water level, 0% of the vertical dimension
0.00 General remark Remarks: Root ingress through sides of manhole
0.00 Roots, fine at joint Remarks: at exit from manhole
0.60 Roots, fine at joint
1.30 Roots, fine at joint
1.80 Roots, fine at joint
2.50 Roots, fine at joint
3.10 Roots, fine at joint
3.80 Roots, fine at joint
4.40 Roots, fine at joint
5.00 Roots, fine
5.60 Roots, fine
6.20 Roots, fine
6.80 Roots, mass at joint, 45% cross-sectional area loss
MH3
Depth: 0.96
0 m
0 m
0.6 m
1.8 m
2.5 m
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Inspection ReportDate : Job number : Weather : Operator : Section number : PLR :
Weather Vehicle : Camera : Preset : Cleaned : Grade:20/02/2014 no rain or snow 2 X
no rain or snow no
1:108 Position Observation
SampleSurvey // Page: 12
7.50 Roots, mass at joint, 20% cross-sectional area loss
8.10 Roots, fine
8.70 Roots, fine at joint
9.40 Roots, mass at joint, 55% cross-sectional area loss
10.60 Roots, mass at joint, 40% cross-sectional area loss
11.20 Roots, fine at joint
11.80 Roots, fine at joint
12.40 Roots, fine at joint
17.80 Roots, mass at joint, 20% cross-sectional area loss
19.70 Roots, fine at joint
20.90 Roots, fine at joint
21.60 Roots, mass at joint, 15% cross-sectional area loss
22.20 Roots, fine at joint
22.80 Roots, mass at joint, 75% cross-sectional area loss
23.60 Finish node type, manhole reference number: MH4 Remarks:Interceptor
Depth: 1.03
MH4
STR no def STR peak STR mean STR total STR grade SER no def SER peak SER mean SER total SER grade0 0 0 0 1 4 1 0.17 4 2
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 2 X
SampleSurvey // Page: 13
Photo: 3_3_26_A.jpg0m, Start node type, manhole, reference number : MH3 Remarks: d/stream
Photo: 3_3_30_A.jpg0m, Roots, fine at joint Remarks: at exit from manhole
Photo: 3_3_31_A.jpg0.6m, Roots, fine at joint
Photo: 3_3_33_A.jpg1.8m, Roots, fine at joint
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 2 X
SampleSurvey // Page: 14
Photo: 3_3_34_A.jpg2.5m, Roots, fine at joint
Photo: 3_3_36_A.jpg3.8m, Roots, fine at joint
Photo: 3_3_37_A.jpg4.4m, Roots, fine at joint
Photo: 3_3_38_A.jpg5m, Roots, fine
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 2 X
SampleSurvey // Page: 15
Photo: 3_3_40_A.jpg6.2m, Roots, fine
Photo: 3_3_41_A.jpg6.8m, Roots, mass at joint, 45% cross-sectional area loss
Photo: 3_3_43_A.jpg7.5m, Roots, mass at joint, 20% cross-sectional area loss
Photo: 3_3_45_A.jpg8.7m, Roots, fine at joint
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 2 X
SampleSurvey // Page: 16
Photo: 3_3_46_A.jpg9.4m, Roots, mass at joint, 55% cross-sectional area loss
Photo: 3_3_47_A.jpg10.6m, Roots, mass at joint, 40% cross-sectional area loss
Photo: 3_3_50_A.jpg12.4m, Roots, fine at joint
Photo: 3_3_51_A.jpg17.8m, Roots, mass at joint, 20% cross-sectional area loss
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 2 X
SampleSurvey // Page: 17
Photo: 3_3_52_A.jpg19.7m, Roots, fine at joint
Photo: 3_3_53_A.jpg20.9m, Roots, fine at joint
Photo: 3_3_54_A.jpg21.6m, Roots, mass at joint, 15% cross-sectional area loss
Photo: 3_3_55_A.jpg22.2m, Roots, fine at joint
Cornwall Drains 1 Pendennis Road
PenzanceTel: 01736 449424
Fax: Email: [email protected]
Place :
Inspection picturesPlace : Road : Date : Section number : PLR Suffix :
Nowhere Nowhere Street 20/02/2014 2 X
SampleSurvey // Page: 18
Photo: 3_3_56_A.jpg22.8m, Roots, mass at joint, 75% cross-sectional area loss
Photo: 3_3_57_A.jpg23.6m, Finish node type, manhole reference number: MH4 Remarks: Interceptor