Appendix A - Building & Construction Authority

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44
Joints and connections (surface condition, starter bars,
shim plate level, waterproofing strip, etc)
3.3
appendix A
ADO – Architect/ Designer/ Owner
MC – Main contractor/ Installer
LEGEND
Visual
Date
MC
Visual/Measure
Date
Wet joints exposed surface
4.3
MC/ADO
Visual
Visual/Measure
Visual
Visual
Visual
Visual
Review
Review
Inspection
Method
Verified by
Installed panel verticality, level and alignment
4.2
MC/ADO
MC
MC
MC/ADO
MC/ADO
MC/ADO
MC/ADO
MC/ADO
Responsibility
Prepared by
Connection details/ interface requirements/ joint seals
(including waterproofing treatment eg, backer rod, sealant,
waterproofing strip, grouting)
4.1
INSTALLATION
Temporary supports
3.2
4
Setting out
3.1
PRE-ERECTION
Carry out inspection of grouting materials and prepacked
skimming mortar (confirm type and quantity)
2.2
3
Carry out inspection of precast wall panels (good condition,
lifting points, connections)
2.1
INCOMING MATERIALS INSPECTION
Submit design mix of concrete and constituent materials
for approval
1.2
2
Submit shop drawings and associated calculations, method
statements, material samples for approval
SUBMISSION
Activity
1.1
1
S/No
Scope of Work: Installation of External Precast Walls
Project:
Sample of Inspection and Test Plan (ITP)
Section 5
Specifications
Specifications/
Method statement
Specifications/
Method statement
Specifications/
Method statement
Drawings
Section 3 and 4
Section 4
Specifications
Specifications
Requirement
Reference
Date
For each location
For each location
For each location
For each location
For each location
For each location
Each delivery
Each delivery
Prior to start work
Prior to start work
Stage/Frequency
Approved by
Conform to
specifications
Conform to
specifications
Conform to
specifications/
method statement
Conform to
specifications/
method statement
Conform to
specifications/
method statement
Conform to drawings
As per approved
samples
Conform to
specifications
Conform to
specifications
Conform to
specifications
Acceptance
Criteria
Checklist
Checklist
Checklist
Checklist
Checklist
Checklist
Delivery docket
Delivery docket
Approved
submissions
Approved
submissions
Records
Appendix A
45
ADO – Architect/ Designer/ Owner
LEGEND
MC – Main contractor/ Installer
Date
Visual
Date
MC/ADO
Visual
Visual
Visual
Visual
Visual
Inspection
Method
Verified by
Carry out watertightness test on
- External wall panels
- Joints between external wall and window frame
7.2
MC/ADO
MC/ADO
MC/ADO
MC/ADO
MC
Responsibility
Prepared by
Check for any cracks on finished surface
7.1
FINAL INSPECTION
Check application of skim coat (finished surface for
evenness, squareness and plumb). All rectification works
should be completed before painting works.
6.2
7
Skimming mortar mixing
6.1
APPLICATION OF SKIM COAT
Check preparation of substrate to receive finishing, including
M&E services
5.2
6
Hand over precast works to finishing works, including
clearance from other trades
PREPARATION FOR SKIMMING
Activity
5.1
5
S/No
Scope of Work: Installation of External Precast Walls
Project:
Sample of Inspection and Test Plan (cont’d)
appendix A
Section 6
Specifications
Section 5
Section 5
Section 5
Section 5
Requirement
Reference
Date
As per required
Per location
For each location
In process
For each location
For each location
Stage/Frequency
Approved by
- No dampness
- No leakage
Conform to
specifications
Conform to
specifications/
method statement
Conform to
specifications/
method statement
Conform to
specifications/
method statement
Conform to
specifications
Acceptance
Criteria
Test records
Checklist
Checklist
Checklist
Checklist
Checklist
Records
Appendix A
46
Carry out concrete receiving inspection (check slump &
concrete cube sampling)
Carry out inspection of prepacked mortar mixes for finishing
works (confirm type and quantity).
- For on-site mixing of cement/sand, inspect plastering
sand (silt content), cement and admixtures
2.3
2.4
LEGEND
MC – Main contractor/ Contractor
Visual
Visual
Visual
Visual
Visual
Visual/Measure
Visual/Measure
Visual
Visual
Review
Review
Inspection
Method
appendix A
ADO – Architect/ Designer/ Owner
Date
MC
Date
Seal form tie holes and repair joints/cracks
4.3
MC/ADO
Verified by
Concrete strength (analysis of cube test results)
4.2
MC
Prepared by
Post-pour inspection (formwork stripping, finished concrete
surface, verticality, concrete curing)
4.1
MC
MC/ADO
MC/ADO
MC
MC/ADO
MC/ADO
MC/ADO
MC/ADO
Responsibility
INSPECTION OF CAST IN-SITU CONCRETE WALL
Monitor concrete placement (confirm that vibration, spread,
discharge rate complies with specs, monitor delivery interval,
waste & cumulative quantity)
3.2
4
Carry out inspection prior to closing formwork
3.1
PREPARATION AND CONCRETING
Carry out inspection of grouting materials for form tie
holes and joint repair
2.2
3
Carry out inspection of rebar
2.1
INCOMING MATERIALS INSPECTION
Submit shop drawings and method statements for approval
1.2
2
Submit design mix of concrete and constituent materials
for approval
SUBMISSION
Activity
1.1
1
S/No
Scope of Work: External Cast In-Situ Reinforced Concrete Walls
Project:
Sample of Inspection and Test Plan (ITP)
Drawings
Drawings
Drawings
Specifications/
Method statement
Drawings
Section 3 and 4
Approved
design mix
Specifications
Mill Certs
Specifications
Specifications
Requirement
Reference
Prior to wall finishing
Date
After casting/
Every storey
After casting/
Every storey
Every casting
For each casting area
One sample per
delivery
Each delivery
Each truck load
Each delivery
Each delivery
Prior to start work
Prior to start work
Stage/Frequency
Approved by
Method statement
Specifications
Specifications/
Method statement
Conform to
specifications/
method statement
Conform to drawings
As per approved
samples
Silt content of plastering
sand ≤ 5% by mass
Conform to
specifications
As per approved
samples
Mill Certs
Conform to
specifications
Conform to
specifications
Acceptance
Criteria
Checklist
Test records
Checklist
Checklist
Checklist
Delivery docket
and
Test records
Delivery docket
Delivery docket
Delivery docket
Approved
submission
Approved
submission
Records
Appendix A
47
LEGEND
MC – Main contractor/ Contractor
Visual
Measure
Visual
Visual
Visual
Visual
Visual/
Measure
Inspection
Method
ADO – Architect/ Designer/ Owner
Date
MC/ADO
Date
Carry out watertightness test on
- External wall panels
- Joints between external wall and window frame
7.3
MC/ADO
Verified by
For plastered surfaces, carry out pull-out test on completed
plasterwork and check for hollowness
7.2
MC/ADO
MC/ADO
MC/ADO
Prepared by
Check for any cracks on finished surface
7.1
FINAL INSPECTION
Check application of skim coat (or plastering, if required).
For plastering, check undercoat (scratched and sufficiently
cured), second and final coat.
Inspect finished surface for evenness, squareness, plumb
and hollowness (for plastered surface). All rectification
works should be completed before painting works.
6.2
7
Cement mortar mixing
6.1
MC/ADO
MC/ADO
Responsibility
FINISHING WORKS (IN-PROCESS INSPECTION)
Check preparation of substrate to receive finishing
- If plastering is required, check application of spatterdash
coat, setting out and level packs, angle beads, groove
line, etc
5.2
6
Hand over RC works to finishing works
- Check verticality/horizontality of off-form RC surface
and decide thickness of plaster/skim coat
- Check clearance from other trades
PREPARATION FOR FINISHING WORKS
Activity
5.1
5
S/No
Scope of Work: External Cast In-Situ Reinforced Concrete Walls
Project:
Sample of Inspection and Test Plan (cont’d)
appendix A
Section 6
Section 6
Section 5
Section 5
Section 5
Section 5
Section 5
Requirement
Reference
Date
As per required
As per required
Per location
Per location
In process
Per location
Per location
Stage/Frequency
Approved by
- No dampness
- No leakage
Conform to
specifications
Conform to
specifications
Conform to
specifications/
method statement
Conform to
specifications/
method statement
Conform to
specifications/
method statement
Conform to
specifications/drawings
Acceptance
Criteria
Test records
Test records
Checklist
Checklist
Checklist
Checklist
Checklist
Records
Appendix A
48
Carry out inspection of prepacked mortar mixes for
plastering (confirm type and quantity)
- For on-site mixing of cement/sand, inspect plastering
sand (silt content), cement and admixtures
2.3
Build remaining brickwalls to 1/2 height and then
full height
3.4
LEGEND
MC – Main contractor/ Contractor
Visual
Visual
Visual
Visual
Visual
Visual/
Measure
Visual
Visual
Review
Inspection
Method
appendix A
ADO – Architect/ Designer/ Owner
Date
Date
MC/ADO
Verified by
Carry out inspection of completed brickwork
- proper packing up of all gaps above last course of bricks
- Opening for door/window/other services
Prepared by
4.1
INSPECTION OF BRICKWORK
MC/ADO
Check completed 1st course brickwall
3.3
4
MC/ADO
Cement mortar mixing
3.2
MC/ADO
Structural clearance and setting out
MC/ADO
MC/ADO
MC
MC
MC/ADO
Responsibility
3.1
PREPARATION AND INSTALLATION
Carry out inspection of jointing materials (bonding bars,
lintels, etc) and damp-proof materials
2.2
3
Carry out inspection of brick, sand & cement for brickwork
(confirm grade, type & quantity)
INCOMING MATERIALS INSPECTION
Submit material samples, shop drawings, method statements
for approval
SUBMISSION
Activity
2.1
2
1.1
1
S/No
Scope of Work: External Brickwalls
Project:
Sample of Inspection and Test Plan (ITP)
Section 5
Section 5
Section 5
Section 5
Section 5
Section 3 and 4
Section 4
Section 4
Specifications/
drawings
Requirement
Reference
Date
Per unit
Per unit
Per unit
Per unit/
Prior to start work
In process
One sample
per delivery
Each delivery
Each delivery
Each delivery
Prior to start work/
each sample
Stage/Frequency
Approved by
Conform to shop
drawings
Conform to shop
drawings
Conform to method
statement
Conform to shop
drawings/ method
statement
Conform to shop
drawings/ method
statement
As per approved
sample
Silt content of plastering
sand ≤ 5% by mass
As per approved
sample
As per approved
sample
Conform to
specifications/drawings
Acceptance
Criteria
Checklist
Checklist
Checklist
Checklist
Checklist
Delivery
dockets and
Test Register
Delivery
dockets
Delivery
dockets
Approved
submissions
Records
Appendix A
49
Check preparation of brick substrate to receive plastering.
Check setting out and level packs, angle beads, metal lath,
groove line, movement joints, etc
5.2
LEGEND
MC – Main contractor/ Contractor
Visual
Measure
Visual
Visual
Visual
Visual
Visual
Inspection
Method
ADO – Architect/ Designer/ Owner
Date
MC/ADO
Date
Carry out watertightness test on
- External wall panels
- Joints between external wall and window frame
7.3
MC/ADO
Verified by
Carry out pull-out test on completed plasterwork and check
for hollowness
7.2
MC/ADO
MC/ADO
MC/ADO
Prepared by
Check for any cracks on finished surface
7.1
FINAL INSPECTION
Check application of undercoat (scratched and sufficiently
cured), second and final coat. Inspect finished surface
for evenness, squareness, plumb and hollowness.
All rectification works should be completed before
painting works.
6.2
7
Cement mortar mixing
6.1
MC/ADO
MC
Responsibility
PLASTERING WORKS (IN-PROCESS INSPECTION)
Hand over areas from brickworks to plastering works
including clearance from other trades
5.1
6
PREPARATION FOR PLASTERING WORK
Activity
5
S/No
Scope of Work: External Brickwalls
Project:
Sample of Inspection and Test Plan (cont’d)
appendix A
Section 6
Section 6
Section 5
Section 5
Section 5
Section 5
Section 5
Requirement
Reference
Date
As per required
As per required
Per location
Per location
In process
Per location
Per location
Stage/Frequency
Approved by
- No dampness
- No leakage
Conform to
specifications
Conform to
specifications
Conform to
specifications/method
statement
Conform to
specifications/method
statement
Conform to
specifications/method
statement
Conform to
specifications/drawings
Acceptance
Criteria
Test records
Test records
Checklist
Checklist
Checklist
Checklist
Checklist
Records
Appendix A
Appendix B
Sample Checklist for Installation of External Precast Walls
Project:
Location:
Inspection
Checklist
Date
Result
✓/✗
Remarks
Signature
RECEIVING INSPECTION
Dimensions (within tolerance)
Overall conditions
- No chipped/ cracked sections
- Flatness
- Cleanliness
Lifting points/inserts (position, physical condition)
Sleeve system/connections
- Starter bars (length, size, spacing)
- Loop and lapping bars (length, size)
- Corrugated sleeve (position, cleanliness)
M&E services present, if any (position, physical condition)
Gridline position (setting out lines and level)
Temporary supports (adequate propping bracing)
Surface condition of joint (cleanliness from dust, debris)
Starter bars from lower floor (number, spacing, size, length)
Shim plate level
Backer Rod / Waterproofing strip position
Standby grout materials
INSTALLATION OF PRECAST WALLS
appendix B
CHECKS PRIOR TO HOISTING
Connection details (including proper grouting at horizontal joints)
Interface requirements/ loop bars/continuity bars/backer
rod/formwork
Verticality of installed panel
Alignment between panels
Level of installed panel
Joint and seal
Wet joints exposed surface
PREPARATION FOR SKIMMING
Clearance from precast works (including other related trades)
Wash surface thoroughly with high pressure water jet
Check cleanliness and dampening of substrate
APPLICATION OF SKIM COAT
Mixing of skimming mortar (mixing proportion, use of mechanical
mixer, consistency of mix)
Application of skim coat (thickness, evenness, curing)
FINAL INSPECTION
Surface condition/evenness
No visible cracks or damages
Watertightness Test (no leakage or dampness)
- External wall panels
- Joints between external wall and window frame
50
Appendix B
Sample Checklist for Construction of External Cast In-Situ Reinforced Concrete Walls
Project:
Location:
Inspection
Checklist
Date
PREPARATION
M&E
SERVICES
appendix B
REBAR
FORMWORK
Setting out / level
Formwork condition
Dimension
Alignment and plumb
Bracing and strutting
Service opening, etc
Construction joint
No. of rebars
Rebar size (diameter)
Rebar cover
Position and spacing
Anchorage / lap length
Links / stirrups / starter bars
Rebar condition
Installation
Secured properly
Bent properly
No visual damage
Check quality of concrete before placing e.g. water-cement ratio,
slump test, etc.
CONCRETING STAGE
Concrete placing (ensure thorough compaction)
INSPECTION (FINISHED CONCRETE)
Dimension
Alignment / plumb / level
Exposed surface
Concrete joints
Sealing of form tie holes
PREPARATION FOR FINISHING WORK
Clearance from RC works (including rectification of RC alignment,
brickworks and other related trades)
Wash surface thoroughly with high pressure water jet
FINISHING WORKS (IN-PROCESS)
Application of skim coat
For plastered RC walls, check:
- setting out
- application of spatterdash coat
- reinforcement lathing (where applicable)
- application and thickness of undercoat (compactness and
scratched), second and final coat, including proper surface
preparation and adequate curing for every coat
51
Result
✓/✗
Remarks
Signature
Appendix B
Sample Checklist for Construction of External Cast In-Situ Reinforced Concrete Walls (cont’d)
Project:
Location:
Inspection
Checklist
Date
Result
✓/✗
Remarks
Signature
FINAL INSPECTION OF FINISHING
appendix B
Plumb
Straightness of corners/joints
Surface condition/evenness
No visible cracks or damages
No hollowness and good adhesion of plaster on RC walls
Watertightness Test (no leakage or dampness)
- External wall panels
- Joints between external wall and window frame
52
Appendix B
Sample Checklist for Construction of Plastered Brickwalls
Project:
Location:
Inspection
Checklist
Date
PREPARATION
Condition of brick units (no physical damage)
RC surface receiving bricks
Moisten bricks
Structural clearance and set reference lines
Mixing of bedding mortar and mixing proportion
appendix B
FIRST COURSE
Type of bricks
Type of bond
Wall thickness
Brick joint width
First course setting out
Provision of stiffener
ERECTION OF BRICKWALL
Damp-proof course (if any)
Bonding bars
Reinforcement lathing
Joint width
Lintels
Laid in two operations in half heights
Gap between top course of brickwork and beam soffit properly
grouted
INSPECTION OF COMPLETED BRICKWORK
Surface and edge are plain and vertical
No cracked and chipped bricks
Joints properly filled with mortar
PREPARATION FOR PLASTERING WORK
Clearance from brickwork and other related trades
Wash surface by high pressure water jet (loose particles, organic
growth etc, removed thoroughly)
Check:
- setting out / level pack
- cleanliness and dampening of substrate
- Angle beads, groove line, etc
- reinforcement lathing (where applicable)
PLASTERING WORK (IN-PROCESS)
Plastering mortar (Mixing proportion, use of mechanical mixer,
consistency of mix)
Application and thickness of undercoat (compactness and
scratched), second and final coat, including proper surface
preparation and adequate curing for every coat
53
Result
✓/✗
Remarks
Signature
Appendix B
Sample Checklist for Construction of Plastered Brickwalls (cont’d)
Project:
Location:
Inspection
Checklist
Date
Result
✓/✗
Remarks
Signature
FINAL INSPECTION
appendix B
Plumb
Straightness of corners/joints
Surface condition/eveness
No visible cracks or damages
No hollowness
Good Adhesion
Watertightness Test (no leakage or dampness)
- External wall panels
- Joints between external wall and window frame
54
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