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Disaster Mitigation in Health Facilities: Wind Effects Nonstructural Issues. Nonstructural elements to consider when assessing vulnerability. ARCHITECTURAL. EQUIPMENT. BASIC INSTALLATIONS. Fa ç ades Roof covers Parapets Chimneys Plaster Glass windows - PowerPoint PPT Presentation
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Disaster Mitigationin Health Facilities:
Wind EffectsNonstructural Issues
Disaster Mitigationin Health Facilities:
Wind EffectsNonstructural Issues
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Nonstructural elements to consider Nonstructural elements to consider when assessing vulnerabilitywhen assessing vulnerabilityNonstructural elements to consider Nonstructural elements to consider when assessing vulnerabilitywhen assessing vulnerability
•Façades•Roof covers•Parapets•Chimneys•Plaster•Glass windows•Attachments (signs, antennae,etc)
•Ornaments•Canopies•Railings•Doors and exit routes
•Medical equipment•Industrial equipment
•Supplies•Office equipment
•Medical and industrial gases
•Air conditioning•Electrical generator•Hydraulic networks•Electric networks
ARCHITECTURAL EQUIPMENT BASIC INSTALLATIONS
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• Previous experiencePrevious experience• Visual inspectionVisual inspection• Data collectionData collection• Non-destructive testsNon-destructive tests• Mathematical modelsMathematical models• Structural analysis and designStructural analysis and design• Wind tunnel analysisWind tunnel analysis• Retrofitting recommendationsRetrofitting recommendations• EqEquipment classificationuipment classification
Nonstructural vulnerability Nonstructural vulnerability assessment methodsassessment methodsNonstructural vulnerability Nonstructural vulnerability assessment methodsassessment methods
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Standards and codes must Standards and codes must cover components and cover components and claddingscladdings
The trend for international standards The trend for international standards is to adopt and adapt the ASCE-7 is to adopt and adapt the ASCE-7 approach for components and approach for components and claddings.claddings.
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Design pressure for components and Design pressure for components and cladding and design force for special cladding and design force for special and open structures (ASCE-7)and open structures (ASCE-7)
Towers, signs, tanks, Towers, signs, tanks, silossilos
p = qh [(GCp) - (GCpi)]
F = qzGCf Af
Design pressureDesign pressure
Design forceDesign force
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Indispensable: Equipment that can not easily or economically be
replaced and is essential for the provision of
health services.
Essential: Similar to indispensable equipment, except that
it can be replaced easily or
cheaply.
Hazardous: Equipment that can injure people and
damage objects.
Chaotic: Equipment whose failure may cause disruption
to its environs.
Functional: Equipment that is not used for emergency
health care.
Criteria for equipment Criteria for equipment classificationclassificationCriteria for equipment Criteria for equipment classificationclassification
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Hipped roof recommended Hipped roof recommended over flat roofover flat roofHipped roof recommended Hipped roof recommended over flat roofover flat roof
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Gabled roof with slopes of Gabled roof with slopes of 20 to 30 degrees are 20 to 30 degrees are preferred against hurricanespreferred against hurricanes
Gabled roof with slopes of Gabled roof with slopes of 20 to 30 degrees are 20 to 30 degrees are preferred against hurricanespreferred against hurricanes
PLAN ISOMETRIC
Hatched area indicateswhere more frequent
fixings are required
Gabled roof
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Connection details between Connection details between metal sheet roof and purlinsmetal sheet roof and purlins
Metal sheet fixings andpurlin-to-rafter connection
Spacer block
Self-tapping screw
Metal sheeting
purlin
Galvanized hurricane strapfixed to rafter and purlin
Rafter
Ridge connection
Valley connection
1010
Typical connection system Typical connection system between metal sheet roof and between metal sheet roof and masonry wallmasonry wall
Typical connection system Typical connection system between metal sheet roof and between metal sheet roof and masonry wallmasonry wall