Development Inspection

• Prepared by

• Location
  Address

• Site Ref :-

• Location :-

• Developer :-

• Contractor :-

KEY CONSTRUCTION S38 INSPECTION STAGES

CHECK LIST

• Date

  Date

• Construction Drawings Issued

  Date

Pre Start Meeting Date:

• Select date

  Date

• Bond Reduction by 30% (at completion of stages 1-4 inclusive)

  Date

• Bond Reduction by 50% (at completion of stages 1-5)

  Date

• Street Lighting checked

  Date

Stage 3 Safety Audit (if appropriate)

• Provisional Certificate Issued/Bond reduced by 90%

  Date

Stage 4 Safety Audit (if appropriate)

• Remedial works completed to LCC satisfaction

  Date

• Final Certificate Issued/Bond cancelled

  Date

DRAINAGE AND SERVICE DUCTS

Essential

• Verification of material sources for pipes, PCC units, covers/ frames, bedding and backfill material

  Pass

  Fail

  N/A

• All lengths

  Yes

  No

  N/A

• Inspection of excavation and pipe bed

  Yes

  No

  N/A

• Inspections of line and level of laid pipes and ducts

  Yes

  No

  N/A

• Inspection of backfill and compaction (including on pipelines to be adopted by water company under S104 Agreement)

  Yes

  No

  N/A

• Bulk Sample Testing of backfill material

  Yes

  No

  N/A

• CCTV Survey of pipelines (Highway Drains)

  Yes

  No

  N/A

Retrospective Tests/Inspections

Essential

• Detailed investigation of backfill suitability and compaction 1/100m min 3 per site

  Pass

  Fail

  N/A

• Verification of material sources for pipes PCC units, covers/frames, bedding and backfill materials

  Pass

  Fail

  N/A

• CCTV survey of pipelines

  Compliant

  Non-Compliant

  N/A

• Air tests on pipelines (Water tests may be required if air test not satisfactory)

  Pass

  Fail

  N/A

• Level survey

  Pass

  Fail

  N/A

SITE INVESTIGATION / FORMATION / EARTHWORKS / GEOTEXTILE

Critical Inspections/Tests

• Removal of vegetation/topsoil

  Yes

  No

  N/A

• Inspection of formation and levels

  Pass

  Fail

  N/A

• CBR tests to assess sub-grade 1/50m minimum 3 per site

  Yes

  No

  N/A

• Check for soft spots, made up ground and agree remedial action

  Yes

  No

  N/A

• Inspection of backfilling of all pits, service trenches, redundant land, drainage, etc (with approved material)

  Pass

  Fail

  N/A

• Verification of approval source of general fill and capping layer material

  Yes

  No

  N/A

• Bulk sample testing of general fill and capping layer material 1/ 400t min 3 per site

  Yes

  No

  N/A

• Verification of material l source of geotextile

• Laying and lapping of geotextile

  Pass

  Fail

  N/A

• Plate Bearing test to assess compaction of capping layer min 2 per site

  Yes

  No

  N/A

Retrospective Tests/Inspections

Verification of formation levels

• Verification of material source for geotextiles

  Yes

  No

  N/A

• Verification of material sources of general fill and capping

  Yes

  No

  N/A

Verification of sub-grade design CBR

• Review of past uses

• Confirmation that contamination is not a problem

  Yes

  No

  N/A

CARRIAGEWAY SUB-BASE

Critical Inspections/Tests

• Verification of approved material source (including confirmation of non-frost susceptibility) 1/200t min 3 per site

  Compliant

  Non-Compliant

  N/A

• Bulk Sample Testing of sub base material

  Pass

  Fail

  N/A

• Check depth of material

  Pass

  Fail

  N/A

• Visual Inspection of completed sub-base

  Pass

  Fail

  N/A

• Plate bearing tests to assess compaction 1/100m min 2/site

  Compliant

  Non-Compliant

  N/A

Retrospective Tests/Inspections

• Verification of approved materials source (including confirmation of non-frost susceptibility), may require sample analysis 1/100m min 2/site

  Yes

  No

  N/A

• Verification of depth and CBR values (through trial pits)

  Pass

  Fail

  N/A

CARRIAGEWAY BASE AND BINDER COURSE

Critical Inspections/Tests

• Verification of approved material source and supply (check correct binder penetration)

  Yes

  No

  N/A

• Bulk sample testing of bituminous materials As required 1/100t min of 2 per day

  Pass

  Fail

  N/A

• Laying records (Record of delivery temperature location where laid and rolling temperature) Daily for all lengths

  Yes

  No

  N/A

• Inspection of top of binder course (potential drainage problems)

  Pass

  Fail

  N/A

• Cores to assess thickness, compaction and bond 3 pairs of 150mm Dia cores per 1000m2 or part thereof laid in any one day

  Pass

  Fail

  N/A

• Rolling Straight Edge tests

  Yes

  No

  N/A

Material Analysis

• Bond Coat Between Layers

  Yes

  No

  N/A

• Material analysis

  Yes

  No

  N/A

• Cores to assess thickness compaction and bond

  Pass

  Fail

  N/A

KERBING AND CHANNELLING

• Inspection of kerb/channel races, including line and level and dimensions (Kerb race/bed to be laid separate to backing)

  Pass

  Fail

  N/A

• Binder course to be laid in two stages and thickened if kerbs to be installed at a later stage

  Yes

  No

  N/A

• Verification of correct concrete mix

  Pass

  Fail

  N/A

• Verification of kerbs/channels from approved source and correct types

  Pass

  Fail

  N/A

• Inspection of kerb lines and levels

  Pass

  Fail

  N/A

• Correct faces and upstands

  Pass

  Fail

  N/A

Trial holes to inspect races

• Verification of use of correct concrete mixes

  Pass

  Fail

  N/A

• Verification of source of kerbs and channels

  Pass

  Fail

  N/A

FOOTWAYS AND EDGING

Inspection of formation

• Inspection of all backfilling and compaction of all pits, service trenches, redundant land drainage, etc (with approved material) (GSB Type 1 in industrial developments)

  Pass

  Fail

  N/A

• Weedspray to formation

  Yes

  No

  N/A

• Verification of approved source for sub-base material (confirmation non-frost susceptibility)

  Yes

  No

  N/A

• Bulk sample testing of sub-base material As required 1/200t min 3 per site

  Yes

  No

  N/A

• Check depth of sub-base

  Pass

  Fail

  N/A

• Inspection of edgings, including bed/backing and line and level (ensure line of edgings are dropped at vehicular crossings to prevent excessive gradients on footways)

  Pass

  Fail

  N/A

• Verification of correct concrete type

  Pass

  Fail

  N/A

• Verification of edgings from approved source and correct type

  Yes

  No

  N/A

• Check for correct crossfalls on footways

  Pass

  Fail

  N/A

• Check for dropped kerbs and tactile crossing points at all junctions, ensure dropped channel kerbs are to be flush with finished surface NOT 25mm UPSTAND

  Pass

  Fail

  N/A

• Verification of approved material source and supply for binder course and surface courses

  Pass

  Fail

  N/A

• Ensure sufficient depth is allowed following the laying of binder course to allow for 25mm of surface course

  Yes

  No

  N/A

• Check location of street lighting and sign locations against approved drawing

  Yes

  No

  N/A

• Cores to separately assess thickness, compaction and bond of binder and surface course layers As required by Engineer

  Yes

  No

  N/A

• Trees and Pits Installed to Approved Detail

  Pass

  Fail

  N/A

FOOTWAYS AND EDGING

• Verification of all approved material sources and supply

  Yes

  No

  N/A

• Trial holes to determine material thicknesses, depth and sub-base compaction

  Yes

  No

  N/A

• Materials analysis

  Yes

  No

  N/A

• Cores to determine depth, compaction and bond of binder and surface course layers

  Yes

  No

  N/A

Excavation of Tree Pits to Satisfaction of Engineer

• Correct Tree Pit to specification

  Pass

  Fail

  N/A

BLOCK PAVED AREAS

Critical inspections/Tests

• Notification of approved material sources (eg blocks and bedding and jointing sand)

  Pass

  Fail

  N/A

• Inspect approved laying patterns (mortar infill not to be used)

  Pass

  Fail

  N/A

• Ensure sufficient edge restraints

  Pass

  Fail

  N/A

• Check correct thickness, colours and dimensions of blocks

  Pass

  Fail

  N/A

• Check correct type and dimensions of small element kerbing

  Yes

  No

  N/A

• Check correct kerbfaces

  Pass

  Fail

  N/A

• Depth of bedding sand within tolerances

  Pass

  Fail

  N/A

• Inspect completed surface regularity (check for drainage problems and possible areas of ponding)

  Pass

  Fail

  N/A

BLOCK PAVED AREAS

Retrospective Tests/Inspections

• Verification of approved material sources

  Yes

  No

  N/A

• Inspect approved laying patterns

  Pass

  Fail

  N/A

• Remove areas of blockwork to check depth of bedding sand within tolerances

  Pass

  Fail

  N/A

• Inspect completed surface regularity (check for drainage problems and possible areas of ponding)

  Pass

  Fail

  N/A

• Profile survey

  Yes

  No

  N/A

CARRIAGEWAY SURFACE COURSE

Critical Inspections/Tests

• Surface of binder course clean and free of contamination

  Yes

  No

  N/A

• Verification of approved material source and supply (check PSV requirements and chipping source for HRA)

  Yes

  No

  N/A

• Bulk sample testing:-

• Coated Chippings

• Thin Surface Course

• HRA or Close Graded Surface Course

• Texture depth testing for HRA or Thin Surfacing. As required by Engineer

  Pass

  Fail

  N/A

• Cores to assess thickness compaction and bond of all bound layers. As required by Engineer 1/paver lane/ 100m min 3 per site

  Pass

  Fail

  N/A

• Road Markings (Check layout and dimensions)

  Compliant

  Non-Compliant

  N/A

• Inspect completed surface regularity (check for drainage problems)

  Pass

  Fail

  N/A

• Bond Coat applied

  Yes

  No

  N/A

CARRIAGEWAY SURFACE COURSE

Retrospective – Testing/Inspections

• Verification of approved material source and supply (check correct binder penetration, PSV requirements and chipping source for HRA)

  Pass

  Fail

  N/A

• Cores to assess thickness compaction and bond of all bound layers

  Yes

  No

  N/A

• Texture depth testing for HRA or Thin Surfacing

  Pass

  Fail

  N/A

• White line testing

  Pass

  Fail

  N/A

PRE-MAINTENANCE PERIOD INSPECTION

Inspection

• Road and Footway adequately swept/cleaned

  Pass

  Fail

  N/A

• Overall condition of all surfaces, ensuring there are no outstanding defects, temporary reinstatements or excavations

  Pass

  Fail

  N/A

• Any damage to kerbs channels blocks or edgings

  Yes

  No

  N/A

• Any weed growth to be treated

  Yes

  No

  N/A

• Gullies and drainage systems cleansed

  Pass

  Fail

  N/A

• Final highway drainage CCTV survey by certified company

  Good

  Fair

  Poor

  N/A

• Planted/grassed areas prepared, mown and edged back

  Pass

  Fail

  N/A

• Service margins marked in accordance with specification – no encroachment into service margins

  Pass

  Fail

  N/A

• Signs and road markings correctly in place

  Pass

  Fail

  N/A

• Lighting columns and signs within area to be adopted as highway

  Pass

  Fail

  N/A

• Visibility splays established

  Pass

  Fail

  N/A

• Any obvious other defects

• As built level surveys of drainage infrastructure and carriageways with submission of as built drawings

  Compliant

  Non-Compliant

  N/A

• Ensure foul and surface water drainage systems are certified to enter their maintenance period by the relevant water authority

  Compliant

  Non-Compliant

  N/A

• Easements are clear of any encroachments

  Good

  Fair

  Poor

  N/A

PRE-ADOPTION INSPECTION

The following are areas for inspection:

• Road and footways adequately swept/cleaned

  Compliant

  Non-Compliant

  N/A

• Planted/grassed areas prepared, mown and edged back

  Pass

  Fail

  N/A

• Service margins marked in accordance with specification – no encroachment into service margins

  Yes

  No

  N/A

• Any obvious other defects

  Yes

  No

  N/A

• Any outstanding issue identified at critical Stage 9 pre maintenance inspection

  Yes

  No

  N/A

• CDM information to be provided (to include Health and Safety file)

  Compliant

  Non-Compliant

  N/A

• Obtain copies of the appropriate foul and surface water drainage testing certificates

  Compliant

  Non-Compliant

  N/A

• Trees / Planting suitably established

  Good

  Fair

  Poor

  N/A