Design levels from KSA 6997-KSA-03-XX-DR-C-0001 S4-G · to be updated to as-built at handover
CCG
IMPERIAL FIELDS – RESIDENTIAL BLOCK
Drainage chamber record · Bishopsford Road, Morden SM4 6BF
FOUL WATER
F3.12
Precast concrete manhole 1200 dia
⚠ CONFINED SPACE – NO ENTRY WITHOUT PERMITPermit to work · gas monitor · trained operatives · top-man & rescue plan. Most tasks can be done from the surface.

Key data · levels: design (KSA S4-G)

Cover level20.450
Invert level19.000 (TBC)
Depth1.450 m
Chamber1200 Ø
Pipe150 Ø
Cover classD400
NoteInvert TBC on drawing

Section through chamber

D400 coverID platebenching with channel at invertINOUT 150ØCL 20.450IL 19.0001.450 mIllustrative, not to scale · 1200 Ø precast concrete rings · levels in m (drawing datum)

Where it is

Location of F3.12
Extract of KSA drainage layout – F3.12 circled red.

Inspection & maintenance

Carried out byAppointed third-party maintenance team
  1. Yearly: lift cover and check flow in the channel; look for build-up of fat, wipes or debris.
  2. Clear blockages by rodding or jetting from this chamber – never by hand.
  3. If blockages recur, arrange a CCTV survey of the connected runs.
  4. Record every visit in the log below (date, name, findings, action) with photos.

CCTV survey

Report refTo be completed at handover
Survey date—
Video—

Handover record – where CCG finished

Practical CompletionTo be completed at handover
Defects period endsTo be completed at handover
Handover inspectionTo be completed at handover
Condition at handoverTo be completed at handover
Silt at handover—
As-built levels verifiedTo be completed at handover
ID plate fittedTo be completed at handover

Inspection log

DateBy (company / name)Silt / conditionAction takenNext due