13 CASE STUDY CASE STUDY Centinela Hospital Medical Center – Electrical Service Utility (ESU) Inglewood, California, U.S.A. 25 26
14 CASE STUDY Centinela Hospital Medical Center – Electrical Service Utility (ESU) Inglewood, California, U.S.A. CASE STUDY 2010 California Building Code (2010 CBC) Importance Factor (I) = 1.5 Seismic Design Category (SCD) = D Sds = 1.11g Sd1 = 0.63g Lateral Force Resisting System (LFRS) Special Reinforced Masonry Shear Wall Analysis Procedure Equivalent Lateral Force Procedure (ASCE 7-05, Section 12.8) Applicable Horizontal Structural Irregularities Reentrant corner irregularity Applicable Vertical Structural Irregularities None 27 28
15 CASE STUDY Reinforced Masonry Wall CASE STUDY Reentrant Corner Irregularity References: 1) https://www.sciencedirect.com/science/article/abs/pii/S2352012421008730/ 2) https://www.routledgehandbooks.com/doi/10.1201/9781315374468-4 29 30
16 CASE STUDY Ground Floor Slab-on-grade Special Reinforced Masonry Shear Wall Strip Footing CASE STUDY Collector/Drag Connection Roof Gravity Beam Beam-to-Wall Connection Flexible Diaphragm Rigid Diaphragm Rigid Diaphragm 31 32
17 CASE STUDY Collectors and Connection Design Requirements • 1.25 x Design Force • Load Combo w/ Overstrength factor (Ωo ) CASE STUDY Collector/Drag Connection Collector/Drag Connection Tu Vu Tu Vu Collector/Drag 33 34
18 CASE STUDY Collector/Drag Connection Vu Tu Collector/Drag CASE STUDY ICC ESR-1917 Gravity Column Base Plate 35 36
19 NON-STRUCTURAL COMPONENTS NON-STRUCTURAL COMPONENTS References: 1) https://www.taiwannews.com.tw/en/news/4662019 Badminton Court, Taiwan Before Magnitude 6.8 Earthquake 19/9/2022 37 38
20 NON-STRUCTURAL COMPONENTS References: 1) https://www.taiwannews.com.tw/en/news/4662019 Badminton Court, Taiwan After Magnitude 6.8 Earthquake 19/9/2022 NON-STRUCTURAL COMPONENTS Architectural Components • Exterior Nonstructural Wall Elements and Connections • Glass in Glazed Curtain Walls & Glazed Storefronts • Suspended Ceilings • Acoustical Tile or Lay-In Panel Ceilings • Interior Partitions 39 40
21 NON-STRUCTURAL COMPONENTS Architectural Components NON-STRUCTURAL COMPONENTS Mechanical and Electrical Components • HVAC Equipment • Electrical Components (Conduits, Cable Trays, Raceways) • Equipment Support Structures and Platforms • Distribution System Supports • Piping and Tubing Systems 41 42
22 NON-STRUCTURAL COMPONENTS Mechanical and Electrical Components NON-STRUCTURAL COMPONENTS 43 44
23 NON-STRUCTURAL COMPONENTS NON-STRUCTURAL COMPONENTS Architectural Components - Detailing Heavy Interior Partition Wall Light-weight Interior Partition Wall (Full Height) 45 46
24 NON-STRUCTURAL COMPONENTS Architectural Components - Detailing Light-weight Interior Partition Wall (Partial Height) NON-STRUCTURAL COMPONENTS Architectural Components - Detailing Interior Wall Veneer 47 48
25 NON-STRUCTURAL COMPONENTS Architectural Components - Detailing Suspended Ceiling NON-STRUCTURAL COMPONENTS Mechanical and Electrical Components - Detailing Distribution Pipe Seismic Restraints Trapeze Pipe Support 49 50
26 NON-STRUCTURAL COMPONENTS Mechanical and Electrical Components - Detailing Chemical Pot Feeder NON-STRUCTURAL COMPONENTS Mechanical and Electrical Components - Detailing Expansion Tank 51 52
27 NON-STRUCTURAL COMPONENTS Mechanical and Electrical Components - Detailing VFD Wall Anchorage TAKEAWAY Seismic Design of Steel-to-Concrete Connections • Verification of initial assumptions is a MUST • Assuming concrete is cracked for anchor design unless justified otherwise • Ductile failure mode of anchor is always preferred Non-Structural Components • As important as, if not more than, structural components • Educating architects and MEP engineers on their importance 53 54
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