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Floor Systems. B1 Level Floor System Options Option 1 – Slab on Grade with Grade Beams Option 2 – Structural Slab at Grade.

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Presentation on theme: "Floor Systems. B1 Level Floor System Options Option 1 – Slab on Grade with Grade Beams Option 2 – Structural Slab at Grade."— Presentation transcript:

1 Floor Systems

2 B1 Level Floor System Options Option 1 – Slab on Grade with Grade Beams Option 2 – Structural Slab at Grade

3 1 st Floor System Options Option 1 – Cast In-Situ Conventionally Reinforced Concrete Flat Plate Option 2 – Cast In-Situ Beams and One-Way Slab 500mm 250mm 725mm

4 Office Floor System Options Option 1 – Flat Plate Option 2 – Post-Tensioned Concrete Option 3 – Hybrid Precast / Cast In-Situ Beam and Slab Option 4 –Beam and One-Way Slab 300mm 240mm 200mm 75mm 175mm 425mm

5 Office Floor Floor System Options Matrix 1234 Conventional Cast In-Situ Flat Plate Cast In-Situ R/C Post-Tensioned Flat Plate Hybrid Precast R/C Beam and HC Plank Cast In-Situ R/C Beam and One- Way Slab Concrete Quantity0.33 m 3 /m m 3 /m m 3 /m m 3 /m 2 Rebar Quantity40 kg/m 2 25 kg/m 2 32 kg/m 2 50 kg/m 2 PT Tendon Quantity N/A6 kg/m 2 N/A Foundation Premium System Cost mill AED96.8 mill AED85.3 mill AEDNot available Carbon 2 17,760 TCO 2 /m 2 13,174 TCO 2 /m 2 11,769 TCO 2 /m 2 Not available Structural Depth300 mm240 mm 600 mm (at girder) 600 mm (at girder) 1 – Costs estimated from Faithful+Gould Report 2 – From D Carbon 8 Report

6 Pile Foundation Pile Layout 1.2 m diameter piles fc = 50 MPa (cube) Piles resisting lateral loads at base Additional Shear Walls + Lateral piles being coordinated at Undercroft Corridors Target capacities: 25m pile = 10,211 kN 20m =7,465 kN Typical Pile Directly Below Columns Except at Pile Groups Piles Below Cores Reinforced for Lateral Loads 20m piles 25m piles

7 Pile Foundation Pile Analysis Idealized Pile SAP Model Deflected Shape Bending Moment Bending Moment Resisted within upper ½ of pile EL +4.00m (NADD) EL -2.00m (NADD) EL m (NADD) Springs represent Lateral resistance of soil Horiz sub mod: 80,000kN/m Horiz sub mod: 640,000kN/m

8 Pile Foundation Pile Details EXTEND SHAFT VERITCAL REINFORCMENT INTO GRADE BEAM ROUGHNED CLEAN SURFACE 1.2 M DIAM. 1.2 M DIAM 20 METERS. 25 METERS. REINFORCED FOR LATERAL LOADS

9 Lateral System

10 Location of Resisting Components X Y X Y Residence Core #1 Residence Core #2 Residence Core #3 Residence Core #4 Residence Core #5 Residence Core #6 Office Core #2 Office Core #3 Office Core #1 Moment Frame X Y

11 Lateral System Imposed Lateral Forces X Y

12 Lateral System Net unbalanced loading equal to 8% of maximum seismic base shear Sloped Columns Lateral Effects Idealized slope column Lateral Impact of Sloped Columns

13 Lateral System Core Wall Participation X Y

14 Lateral System Core Wall Participation X Y

15 Lateral System Core Wall Participation Example, Residence Building X Direction Lateral Force X Y

16 Lateral System Core Wall Participation Example, Residence Building Y Direction Lateral Force

17 Lateral System Components Core #5 vs. Typical Cone Residence Core 5 Typical Residence Cone

18 Lateral System Load Sources Green Roof Depth Impact Comparison Total Base Shears: 1500 mm Option: 69170kN 300 mm Option: 61090kN *300 mm option values do not consider economies in slab thickness Total Base Shears: 1500 mm Soil Depth: 69170kN 300 mm Soil Depth: 61090kN *300 mm Soil Depth values do not consider economies in slab thickness

19 Issues Affecting Piling Permit and Tender: Geotechnical Report Subsurface exploration for voids Confirmation of pile capacities Concrete Mix Design for soil chloride and sulfate content Wind Tunnel Report Floor System Decisions Construction Loading Requirements at Lv1 Green Roof Loading Requirements


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