Figure 2. The Plasco tower under construction: (a) the flooring system; (b) the bracing system on the sides of the tower (adapted from (Shakib et al., 2017)).
Figure 3. The extent of fire: (a) at early stages; (b) spreading in the northwest side; (c) extending throughout the entire floor levels (all images courtesy of ISNA NEWS Agency).
Figure 4. The plan view of Plasco tower and collapse locations (Hajiloo et al., 2017).
Figure 6. 10-storey model with middle floor heated (MF, Magnification Factor); (a), (c), (e), (g), NS (grid line – D); (b), (d), (f), (h), EW (grid line – 1).
Figure 7. Reference points in the floor for horizontal and vertical deflections.
Figure 8. Horizontal displacement of columns at 5th floor.
Figure 9. Vertical displacement of floor at 5th floor.
Figure 10. Horizontal displacement of columns at 5th floor (single floor fire vs three floor fire).
Figure 11. Vertical displacement of floor at 5th floor (single floor fire vs three floor fire).
Figure 12. Horizontal displacement of columns at mid-floor height (Thermal loading at 5th floor).
Figure 13. Vertical displacement of floor at 5th floor (Thermal loading at 5th floor).
Figure 14. Horizontal displacement of columns at 5th floor (Thermal loading at 4th, 5th & 6th floors).
Figure 15. Vertical displacement of floor at 5th floor (Thermal loading at 4th, 5th & 6th floors).
Figure 16. Floor Deformations at 5th floor, 350℃ (Thermal Loading at 5th floor).
Figure 1. (a) Steel frame and bracing system around all sides of the Plasco tower; (b) the attached 5-storey shopping centre (all images courtesy of IRNA).
Figure 5. (a) Full Floor; (b) Primary EW and NS Truss; (c) Primary NS Truss; (d) Primary EW Truss; (e) Secondary Beam EW and NS Truss; (g) Secondary Prestressed Vierendeel Truss (NS); (h) Secondary Tie Truss; (i) Edge Beam (NS); (j) Edge Beam (EW); (k) Multi Floor (NS); (l) Multi Floor (EW); (m) Multi Floor Model.
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