technology in architecture lecture 12 electrical equipment electrical power management fire...
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Technology in ArchitectureTechnology in Architecture
Lecture 12Lecture 12Electrical EquipmentElectrical Equipment
Electrical Power ManagementElectrical Power Management
Fire Protection SystemsFire Protection Systems
Lecture 12Lecture 12Electrical EquipmentElectrical Equipment
Electrical Power ManagementElectrical Power Management
Fire Protection SystemsFire Protection Systems
Electrical EquipmentElectrical EquipmentPower Supply
M: F. 27.1 p. 1246
Electrical Electrical EquipmentEquipment
Switchgear
M: F.27.2 p.1247
Electrical EquipmentElectrical Equipment
Switchgear Space Requirements
M: F.26.28 p.1209
Electrical Electrical EquipmentEquipment
Distribution Networks Cable/Conduit Busduct Busway Underfloor systems Raised floor systems
M: F.27.12 p.1257
M: F.27.9 p.1255
M: F.27.32 p.1271
Electrical EquipmentElectrical Equipment
Safety Considerations National Electrical Code Fuses and Circuit Breakers Ground Fault Circuit Interrupter (GFCI, GFI) Battery Backup Emergency Generator Armored Cable vs Metal Clad
Electrical EquipmentElectrical Equipment
Electrical Closets
M: F.28.14 p.1300
Electrical Electrical EquipmentEquipment
Electrical Plans Lighting Power M: F.28.21 p.1315
M: F.28.22 p.1316
Fire Protection SystemsFire Protection SystemsFire Protection SystemsFire Protection Systems
Sources of IgnitionSources of Ignition
Chemicals: spontaneous combustion
Electrical: resistance, overloaded wiring, lightning
Mechanical: sparks and friction
Products of CombustionProducts of CombustionFire/Heat
Smoke
Gases toxic, displace oxygencarbon monoxidecyanide foam rubberhydrogen chloride PVChydrogen sulfidesulfur dioxideammonia
Fire & Life Safety ObjectivesFire & Life Safety Objectives
Protection of Life
Protection of Property
Continuity of Operation
Codes specify minimum acceptablelevel of performance
Protection of LifeProtection of Life
Evacuation: clear pathways, smoke free, minimum 32” entrance width, 2 hour walls/doors
Physical limits
2-way travelon stairs
Do not include elevators
M: p.1092, T.24.3
Property ProtectionProperty ProtectionAccess for fire/life safety vehicles
Increased reliability of internal systems
Estimated time of arrival of fire fighters
Adequate water volume and pressure
Exposure protection from surrounding context
Compartmentation
Automatic detection/suppression systems
Structural Protection
M: p.1098, F.24.7
Continuity of OperationsContinuity of Operations
Fire detection/suppression systems in critical areas
Smoke purging systems
Waterproof/water containment
M: p. 1102, F.24.11
Building System Building System RequirementsRequirements
Enhance Fire/Life SafetyHigh thermal massAdequate water pressureOverhangs on windows
Reduce Fire/Life SafetyOpen planForced air systemsElectric lighting onlySunscreensNon-operable windowsInsulationAcoustical materials
Smoke Management Smoke Management StrategiesStrategies
ConfinementFire wallsSmoke barriers
DilutionPressurized stairwells
ExhaustLarge atria
HVACPressurize building
Automated Ventilating Hatches
Water Management Water Management StrategiesStrategiesWater
+ coolssmothers fireremoves heat/oxygen
- damages contentsconducts electricitydilutes oilchanges to steam
Water Management Water Management StrategiesStrategiesWater Sources
Standpipes siamese connection to outside
Hose Cabinets siamese connection or house tank
Sprinkler Systems siamese connection or
house tank
Water Management Water Management StrategiesStrategies
Sprinkler Head Types
Semi-Recessed Recessed Pendant Upright Sidewall
Water Management Water Management StrategiesStrategies
Hazard levels
Light Ordinary Extra-hazard
M: p. 1112, T.24.8
Water Management StrategiesWater Management Strategies
Sprinkler spacing
orientation sprinkler type hazard level
M: p. 1084, T.24.9
Water Management Water Management StrategiesStrategies
Sprinkler System Types
Wet-pipe Dry-pipe Preaction Deluge
Wet-pipe SystemsWet-pipe Systems
Water in pipe Sprinkler activated Sprinklers closed
Used in areas with temperature> 40ºF
M: p. 1118, F.24.18
Dry-pipe SystemsDry-pipe Systems
Compressed air or nitrogen in pipe
Sprinkler activated Sprinkler closed
Used in unheated areas
Valve in heated enclosure M: p. 1123, F.24.23
Preaction SystemPreaction System
Air in pipe Minimal air pressure Separate detectors Sprinklers closed
Used in water-damage sensitive areas
Delay in filling allows time to find/fight fire
M: p. 1124, F.24.24
Deluge SystemDeluge System
Air in pipe Separate detectors Sprinklers open
Used where extremely rapid fire spread expected
M: p. 1125, F.24.25
Non-Water Suppression Non-Water Suppression SystemsSystems
Halogenated Gases now illegalFoamsCarbon Dioxide (CO2)
Clean Agent GasesPortable Fire Extinguishers
Design Design ConsiderationsConsiderations
Head location/typeUniform coverageSymmetryConnectivity
M: p. 1119, F.24.19