QAQC in Construction

The physical and mechanical properties of the interlocking concrete blocks shall conform to the following requirements.  A. Bulk Density (min. 48 hrs. immersion): Average > 2.375 T/m3 Minimum = 2.330 T/m3 9  B. Bulk/Apparent Density Ratio (min. 48 hrs. immersion) Average > 0.88 Minimum = 0.87  C. Water Absorption (min. 48 hrs. immersion, tested according to ASTM C140) Maximum = 3% for aggressive exposure zones1 4.5% for less aggressive exposure zones2  D. Compressive Strength (min. 48 hrs. Immersion tested according to BS 6717:1993) Average ≥ 55 Mpa for aggressive exposure zones, and 49 for less aggressive exposure zones Minimum = 47 Mpa for aggressive exposure zones, and 44 for less aggressive exposure zones  E. Abrasion Resistance (for vehicular areas only, tested as per ASTM C418) Average thickness loss < 3 mm Maximum volume loss = 150 mm3 per 500 mm2 Or comply with BS EN 1338 (maximum volume loss 20,000 mm3 per 5,000 mm2  F. Flexural Strength (tested according to ASTM

Updated on 06.02.2021 1. Checklist for Supplier Approval (SPA) Company Profile of Supplier / Manufacturer Financial Stability of the Company (Last 3 Years Financial Report) Government/Commercial Certificates (Ministry of Commerce, Chamber of Commerce, GOSI, Zakat, VAT, Saudinization, SAGIA - If Non-Saudi Company, etc.) Quality Certificates for Company (ISO) SASO Certificate / Product Registration with SABER.SA List of Project (Completed / Going on) List of Valid Products / Services Project Requirements Overview (Project Scope) List of Required Products and Products Overview Risk Management Quality Control Plan (QCP) Health and Safety Plan (HSE) Copy of approval from Riyadh Amanah / Other Government Clients Copies of pre-qualification (Approvals) by other Consultants or Contractors Product Availability Warranties (Only Required for Sub-Contractors) Company / Factory / Industry Photo Gallery (If Available) Contact / Address / Location Map 2. Checklist for Material  Approval