QA/QC  › Timber & Wood  › Timber Works ITP
Plan · QC-TMB-PLN-001
Timber Works ITP
23 checkpoints across 5 sections. Before timber works commence; covers material sourcing through installation completion
23 Checkpoints
5 Sections
One ITP per project; updated if scope changes
QC Engineer, Engineer-in-Charge

Checklist Preview

S.No.CheckpointIS RequirementStatus
A. INSPECTION HOLD POINTS
A1HOLD POINT 1: Material Sourcing Approval
Acceptance: Supplier documents reviewed; mill certification obtained; PO finalized
Verify supplier and mill credentials before delivery
OK
NC
NA
HOLD
A2HOLD POINT 2: Timber Receiving & Inspection
Acceptance: MC tested (≤15% structural, ≤12% joinery); visual quality checked; accepted/rejected
Inspect all deliveries at site receipt
OK
NC
NA
HOLD
A3HOLD POINT 3: Treatment Verification (If Applicable)
Acceptance: Treatment certificate reviewed; retention ≥4-6 kg/m³ verified; physical check done
Confirm preservation adequacy before use
OK
NC
NA
HOLD
A4HOLD POINT 4: Machining & Joinery Pilot Check (First 20 m³)
Acceptance: Joinery fit ±0.5 mm; frame squareness ±3 mm; surface finish acceptable
Verify carpentry quality before full-scale production
OK
NC
NA
HOLD
A5HOLD POINT 5: Installation & Assembly Quality
Acceptance: Plumb ±3 mm, level ±2 mm, gaps uniform; no defects visible
Verify on-site installation standards
OK
NC
NA
HOLD
A6HOLD POINT 6: Final Acceptance & Handover
Acceptance: All QC tests passed, no rejections, documentation complete, ready for finishing/use
Comprehensive final inspection
OK
NC
NA
HOLD
B. TEST & INSPECTION SCHEDULE
B1Moisture Content Testing (10% batch sample minimum)
Acceptance: ≤15% structural, ≤12% joinery; oven-dry or meter method; results documented
Verify seasoning upon delivery
OK
NC
NA
HOLD
B2Treatment Certificate Review & Verification (If Treated)
Acceptance: Certificate reviewed; retention rate verified; batch traceability confirmed
Confirm treatment adequacy
OK
NC
NA
HOLD
B3Visual Quality Grading (Defects, Insect Damage, Fungal Stain)
Acceptance: Grade assessed per IS standard; defect limits met; rejections documented
Grade compliance verification
OK
NC
NA
HOLD
B4Joinery Fit & Assembly Quality Inspection
Acceptance: Joint fit ≤0.5 mm gap; squareness ±3 mm diagonal; surface finish smooth
Carpentry work quality verification
OK
NC
NA
HOLD
B5Installation Accuracy Check (Plumb, Level, Spacing)
Acceptance: Plumb ±3 mm/floor height; level ±2 mm/span; uniform gaps per spec
On-site installation quality
OK
NC
NA
HOLD
C. ACCEPTANCE CRITERIA
C1Material Acceptance (Moisture, Grade, Quality)
Acceptance: MC within limits, grade confirmed, visual defects <specification, no insect damage
Material meets specification
OK
NC
NA
HOLD
C2Treatment Acceptance (Retention, Penetration, Efficacy)
Acceptance: Retention ≥4-6 kg/m³, penetration ≥3 mm, color uniform, certificate valid
Preservation adequate for service life
OK
NC
NA
HOLD
C3Carpentry Acceptance (Joinery, Assembly, Surface Quality)
Acceptance: Joint fit tight, no visible gaps, surface smooth, frame square, finish acceptable
Craftsmanship meets standard
OK
NC
NA
HOLD
C4Installation Acceptance (Plumb, Level, Function)
Acceptance: Proper alignment, no binding/sticking, hardware operational, gaps uniform
In-service readiness
OK
NC
NA
HOLD
Showing 15 of 23 checkpoints ·
A. INSPECTION HOLD POINTS
A1HOLD POINT 1: Material Sourcing Approval
Verify supplier and mill credentials before delivery (IS 1141)
Supplier documents reviewed; mill certification obtained; PO finalized
OKNCNAHOLD
A2HOLD POINT 2: Timber Receiving & Inspection
Inspect all deliveries at site receipt (IS 1141)
MC tested (≤15% structural, ≤12% joinery); visual quality checked; accepted/rejected
OKNCNAHOLD
A3HOLD POINT 3: Treatment Verification (If Applicable)
Confirm preservation adequacy before use (IS 401)
Treatment certificate reviewed; retention ≥4-6 kg/m³ verified; physical check done
OKNCNAHOLD
A4HOLD POINT 4: Machining & Joinery Pilot Check (First 20 m³)
Verify carpentry quality before full-scale production (IS 4021)
Joinery fit ±0.5 mm; frame squareness ±3 mm; surface finish acceptable
OKNCNAHOLD
A5HOLD POINT 5: Installation & Assembly Quality
Verify on-site installation standards (IS 4021)
Plumb ±3 mm, level ±2 mm, gaps uniform; no defects visible
OKNCNAHOLD
A6HOLD POINT 6: Final Acceptance & Handover
Comprehensive final inspection (IS 1141)
All QC tests passed, no rejections, documentation complete, ready for finishing/use
OKNCNAHOLD
B. TEST & INSPECTION SCHEDULE
B1Moisture Content Testing (10% batch sample minimum)
Verify seasoning upon delivery (IS 1141)
≤15% structural, ≤12% joinery; oven-dry or meter method; results documented
OKNCNAHOLD
B2Treatment Certificate Review & Verification (If Treated)
Confirm treatment adequacy (IS 401)
Certificate reviewed; retention rate verified; batch traceability confirmed
OKNCNAHOLD
B3Visual Quality Grading (Defects, Insect Damage, Fungal Stain)
Grade compliance verification (IS 1141)
Grade assessed per IS standard; defect limits met; rejections documented
OKNCNAHOLD
B4Joinery Fit & Assembly Quality Inspection
Carpentry work quality verification (IS 4021)
Joint fit ≤0.5 mm gap; squareness ±3 mm diagonal; surface finish smooth
OKNCNAHOLD
B5Installation Accuracy Check (Plumb, Level, Spacing)
On-site installation quality (IS 4021)
Plumb ±3 mm/floor height; level ±2 mm/span; uniform gaps per spec
OKNCNAHOLD
C. ACCEPTANCE CRITERIA
C1Material Acceptance (Moisture, Grade, Quality)
Material meets specification (IS 1141)
MC within limits, grade confirmed, visual defects <specification, no insect damage
OKNCNAHOLD
C2Treatment Acceptance (Retention, Penetration, Efficacy)
Preservation adequate for service life (IS 401)
Retention ≥4-6 kg/m³, penetration ≥3 mm, color uniform, certificate valid
OKNCNAHOLD
C3Carpentry Acceptance (Joinery, Assembly, Surface Quality)
Craftsmanship meets standard (IS 4021)
Joint fit tight, no visible gaps, surface smooth, frame square, finish acceptable
OKNCNAHOLD
C4Installation Acceptance (Plumb, Level, Function)
In-service readiness (IS 4021)
Proper alignment, no binding/sticking, hardware operational, gaps uniform
OKNCNAHOLD
Showing 15 of 23 ·
Inspection Sign-Off
APPROVED FOR EXECUTION
APPROVED WITH MODIFICATIONS
REJECTED
ITP Summary
Name / Sign / Date
Hold Points & Approvals
Name / Sign / Date
Key Testing Schedule
Name / Sign / Date
Contractor Representative
Name / Sign / Date
QC Engineer
Name / Sign / Date
Engineer-in-Charge
Name / Sign / Date