Essential Guide for Slab-on-Ground Placement

This comprehensive guide provides valuable insights on planning, specification requirements, equipment readiness, concrete delivery, crew sizing, and the roles within a slab-on-ground placement project. Key topics include concrete properties, joint spacing, equipment productivity, crew management, and more to ensure a successful slab placement process.

• Construction
• Slab-on-Ground
• Concrete Placement
• Equipment Readiness
• Crew Sizing

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Uploaded on Aug 05, 2024 | 0 Views

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1. Planning for slab-on-ground placement Chapter 1

2. Chapter Topics Introduction Specification requirements Determining the size of concrete placements Ordering concrete Concrete delivery Equipment Size of placing and finishing crews Preconstruction meeting

3. Specification Requirements ACI flatwork finishers Material properties Concrete strength and durability Vapor retarders or barriers Reinforcement Slab flatness and levelness Joint spacing and depth Curing and protection

8. Concrete Delivery Concrete is perishable be prepared Site access flagger needed cone area Space for two trucks to discharge ASTM C 94 Specification for Ready-Mixed Concrete Discharged within 1 hrs or 300 revolutions Plan for ready mix trucks Spacing of trucks, 15 minutes? Discharge of trucks, 5 to 15 minutes Washout of trucks

9. Have Equipment Ready And spare equipment Emergency bulkheads Equipment Producitivity Hand finishing crew: 1000 to 2000 sf Walk-behind: 1000 to 3000 sf Ride-on trowel: 3000 to 6000 sf Laser-guided, wheel-mounted screed: 30,000 to 50,000 sf

11. Size of Placing and Finishing Crews Labor cost for placement Workers sick or injured Concrete sets faster Weather changes; hot or rain Equipment breakdowns Early sawing to minimize cracking Overlap placing and finishing crews

12. Placing Crew Finishing foreman Discharging concrete Spreading concrete Screed operators Finishers General assistance

13. Finishing Crew Concrete and Weather Working edges Walk-behind to float fast-setting loads Riding trowels General assistance

17. Checklist for Placing and Finishing Volume of concrete Concrete delivery rate Haul time Truck spacing Placing equipment Spare equipment Crews