A series of nine tests was performed on a full-scale, long-span hollow-core floor slab assembly to determine the distribution of resisting internal moments within the 8-ft (2.4 rn) wide untopped slabs. The test assembly was 37.5 ft (11.4 m) wide and had a clear span of 44.25 ft (13.5 m). Load-induced curvature in each slab was determined from measured strains and midspan deflection characteristics were measured. The test results showed good lateral load distribution characteristics. For the given test conditions, the width of significant distribution of loads ranged from 36 to 54 percent of the span length.
1. LaGue, David J., "Load Distribution Tests on Precast Prestressed Hollow- Core Slab Construction," PCI JOURNAL, V. 16, No. 6, November-December 1971, pp. 10-18.
2. Johnson, Ted, and Ghadiali, Zohair, "Load Distribution Test on Precast Hollow- Core Slabs with Openings," PCI JOURNAL, V. 17, No.5, September-October 1972, pp. 9-19.
3. Vimmr, Vaclav, Johnson, Ted, and Ghadiali, Zohair, Discussion of "Load Distribution Test on Precast Hollow-Core Slabs with Openings," PCI JOURNAL, V. 18, No. 4, July-August 1973, pp. 84-85.
4. PCI Design Handbook—Precast Prestressed Concrete, 2nd Edition, Section 3.8.2 - Concentrated Load Distribution, Prestressed Concrete Institute, Chicago,Illinois, 1978.
