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Block Works

The document outlines the inspection and acceptance criteria for blockwork installation, detailing the scope, materials checks, execution inspections, tests, tolerances, documentation, and final acceptance criteria. Key aspects include verifying block types, mortar mixes, alignment, and ensuring compliance with approved specifications. Final acceptance requires that the work matches drawings, has no visible defects, and is ready for plastering.

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ahmed r
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23 views2 pages

Block Works

The document outlines the inspection and acceptance criteria for blockwork installation, detailing the scope, materials checks, execution inspections, tests, tolerances, documentation, and final acceptance criteria. Key aspects include verifying block types, mortar mixes, alignment, and ensuring compliance with approved specifications. Final acceptance requires that the work matches drawings, has no visible defects, and is ready for plastering.

Uploaded by

ahmed r
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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BLOCKWORK INSPECTION & ACCEPTANCE – PROFESSIONAL ENGINEERING SUMMARY

1. Scope of Work:

Blockwork includes the supply and installation of solid or hollow concrete blocks for internal and
external walls, in accordance with approved shop drawings and specifications.

2. Materials Check:

• Block Type & Size: Verify block dimensions, density, and compressive strength as per
approved material submittals.

• Mortar Mix: Check mortar ratio (typically 1:4 cement:sand or as specified).

• Damp Proof Course (DPC): Confirm DPC is placed at plinth level before starting wall
construction.

• Curing: Ensure blocks and mortar are properly cured (minimum 7 days).

3. Execution Inspection:

• Plumb & Alignment: Use plumb bob and spirit level to ensure verticality and alignment of
walls.

• Leveling: Verify level courses at every 1 meter of height.

• Joint Thickness: Ensure horizontal and vertical joints are uniform (10 mm ± 2 mm).

• Staggering of Joints: Check proper bond pattern (stretcher bond).

• Reinforcement:

o Check for vertical and horizontal reinforcement where required (e.g., seismic areas
or high walls).

o Confirm presence of lintels over openings.

• Openings & Embedded Items:

o Verify dimensions and positions of windows, doors, MEP sleeves, and conduits.

o Ensure electrical boxes are fixed in place prior to plastering.

• Cleaning: Surfaces should be clean and free of mortar droppings.

4. Tests & Inspections:

• Compressive Strength Test (ASTM C140 or BS EN 772-1): At least 3 samples per batch.
• Density Test: For lightweight blocks.

• Dimension Tolerance Check: Measured randomly from delivered blocks.

• Absorption Test: To verify water absorption rate.

• Site Visual Inspection: Daily inspection during execution.

5. Tolerances:

• Vertical alignment: ±10 mm in 3 meters height.

• Wall thickness variation: ±5 mm.

• Opening dimensions: ±5 mm.

6. Documentation:

• Inspection Request (IR): Submitted for each wall segment.

• Material Approval: Attach supplier certificates & test results.

• Site Reports: Maintain daily progress records and QA/QC logs.

7. Final Acceptance Criteria:

• Work matches approved drawings and specifications.

• No visible cracks, loose joints, or excessive gaps.

• All embedded items in correct locations.

• Surface ready for plastering.

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