GENERAL
1.1 SPECIALIST CONTRACTOR
Saqibs is a Member of the National Precast Concrete Association Australia, GRC Industry Group
2 MATERIALS
2.1 GENERAL
Materials used for making the GRC unit shall generally comply with relevant British and Australian Standards and Codes
2.2 GLASSFIBRE
2.3 CEMENT
2.4 SAND
2.5 ADMIXTURES
2.6 PIGMENTS
2.7 WATER
2.8 MIX DESIGN
2.9 MOULD-RELEASE AGENT
2.10 FORMWORK
2.11 SUPPORT STEELWORK AND FIXINGS
3 WORKMANSHIP
3.1 WEIGHING AND BATCHING
3.2 MIXING
3.3 APPLICATION
3.4 SHAPE AND FINISH
3.5 MANUFACTURE
3.7 TOLERANCES
3.8 DEMOULDING AND CURING
3.10 HANDLING, TRANSPORTATION AND
INSTALLATION
3.12 TESTS
GUIDE SPECIFICATION FOR
PLANT-PRECAST CONCRETE PRODUCTS
PART 1: GENERAL
1.1 REFERENCES
1.2 GENERAL REQUIREMENTS
1.3 SUBMITTALS
1.3.1 Preconstruction Submittals
1.3.2 Shop Drawings
1.3.3 Precast Concrete Unit Data
1.3.4 Design Data
1.3.5 Test Reports
1.3.6 Certificates
1.4 DESIGN
1.4.1 Standard Precast Concrete Unit Design
1.4.2 Non-Standard Precast Concrete Unit Design
1.4.3 Franchise Precast Concrete Units
1.4.4 Joints and Sealants
1.4.5 Concrete Mix Design
1.4.5.1 Concrete Proportions
1.4.5.2 Durability and Performance Requirements
1.4.5.2.1 Concrete Compressive Strength
1.4.5.2.2 Water Cement Ratio
1.4.5.2.3 Air Content
1.5 QUALITY ASSURANCE
1.5.1 NPCA Plant Certification
1.5.2 Qualifications, Quality Control and Inspection
1.5.2.1 Qualifications
1.5.2.2 Quality Control
1.5.2.3 Inspection
1.6 HANDLING, STORAGE AND DELIVERY
1.6.1 Handling
1.6.2 Storage
1.6.3 Delivery
1.6.4 Final Acceptance
PART 2: PRECAST CONCRETE UNITS
2.1 MANUFACTURERS
2.2 MATERIALS
2.2.1 Cement
2.2.2 Silica Fume
2.2.3 Fly Ash and Pozzolans
2.2.4 Ground Granulated Blast-Furnace Slag
2.2.5 Water
2.2.6 Aggregates
2.2.6.1 Aggregate Selection
2.2.6.2 Aggregates for Lightweight Concrete
2.2.7 Admixtures
2.2.7.1 Air-Entraining
2.2.7.2 Accelerating, Retarding, Water Reducing [Moderate to High]
2.2.7.3 Pigments
2.2.7.4 Corrosion Inhibitors
2.2.8 Reinforcement
2.2.8.1 Reinforcing Bars
2.2.8.1.1 Deformed Billet-steel
2.2.8.1.2 Deformed Low-alloy steel
2.2.8.2 Reinforcing Wire
2.2.8.2.1 Plain Wire
2.2.8.2.2 Deformed Wire
2.2.8.3 Welded Wire Reinforcement
2.2.8.3.1 Plain Wire
2.2.8.3.2 Deformed Wire
2.2.8.4 Epoxy-Coated Reinforcement
2.2.8.4.1 Reinforcing Bars
2.2.8.4.2 Wire and Welded Wire Reinforcement
2.2.8.5 Galvanized Reinforcement
2.2.9 Inserts and Embedded Metal
2.2.9.1 Structural Steel Plates, Angles, etc.
2.2.9.2 Hot-dipped Galvanized
2.2.9.3 Proprietary Items
2.2.10 Joint Sealants and Joint Gaskets
2.2.10.1 Rubber Gaskets for Circular Concrete Sewer Pipe and Culvert Pipe
2.2.10.2 External Sealing Bands for Noncircular Sewer, Storm Drain and Culvert Pipe
2.2.10.3 Preformed Flexible Joint Sealants for Concrete Pipe, Manholes, and
Manufactured Box Sections
2.2.10.4 Elastomeric Joint Sealants
2.2.11 Pipe Entry Connectors
2.2.12 Grout
2.2.12.1 Nonshrink Grout
2.2.12.2 Cementitious Grout
2.3 MANUFACTURE
2.3.1 Forms
2.3.2 Reinforcement
2.3.3 Embedded Items
2.3.4 Concrete
2.3.4.1 Concrete Mixing
2.3.4.2 Concrete Placing
2.3.4.2.1 Cold Weather Concreting
2.3.4.2.2 Hot Weather Concreting
2.3.4.3 Concrete Curing
2.3.4.3.1 Curing by Moisture Retention
2.3.4.3.2 Curing with Heat and Moisture
2.3.4.4 Surface Finish
2.3.4.4.1 Formed Non-Architectural Surfaces
2.3.4.4.2 Unformed Surfaces
2.3.4.4.3 Special Finishes
2.3.4.4.4 Architectural Finishes
2.3.4.5 Stripping Precast Concrete Units From Forms
2.3.4.6 Patching and Repair
2.3.4.6.1 Repairing Minor Defects
2.3.4.6.2 Repairing Honeycombed Areas
2.3.4.6.3 Repairing Major Defects
2.3.4.7 Shipping Precast Concrete Units
PART 3: EXECUTION
3.1 INSTALLATION
3.1.1 Site Access
3.1.2 Installation
3.1.3 Watertightness
3.2 FIELD QUALITY CONTROL
3.2.1 Job Site tests
3.2.1.2 Vacuum Testing
3.2.1.2 Hydrostatic Testing
Gypsum Powder Production line
Water
Sisal
Faber Mold
2. Air Handling Systems (Fans, motors, Variable Speed Drives, cooling coils and control valves, heating coils and control valves, filters, dampers, safeties such as smoke detectors or freezestats and damper end switches, controls, gages, and vibration isolation).
4. Heating Hot Water Systems (Boilers, controls, instrumentation and gages, flues, heating water pumps and motors, Variable Speed Drives, mixing valves).
5. Condensate Return Systems
6. Chilled Water Systems
7. Condenser Water Systems
8. Exhaust Fans
9. Steam System
11. Laboratory Exhaust Systems
13. Laboratory Ventilation Systems
15. Radiology/Imaging Cooling Systems
16. Computer Room Air Conditioning Systems
17. Room Pressurization Equipment
