spring 2019 delaney seeburger california polytechnic state
TRANSCRIPT
Spring 2019Delaney Seeburger
California Polytechnic State University
Prescriptiveโฆ Structuralโฆ Flammabilityโฆ Suppressionโฆ Alarm and Detectionโฆ Smoke Controlโฆ Egress
Performance Basedโฆ Design Firesโฆ Tenabilityโฆ FDSโฆ Human Behaviorโฆ Pathfinder
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Fire Resistance
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TYPE I TYPE IIBuilding Element A A
Structural FrameIncluding columns, girders, trusses 3 1
Bearing wallsExteriorInterior
33
11
Nonbearing walls and partitionsExteriorInterior
See Table 602
Floor construction Including supporting beams and joists 2 1
Roof constructionIncluding supporting beams and joists 1.5 1
Building Element Resistance RatingCorridors 1 hourStairways 2 hour
Doors 20 minute
Occupancy Interior Exits Corridors RoomsA-3 B B CB, M B C CR-2 C C C
CBC Table 601CBC 510.2
CBC 1020.1
CBC 1023.2
CBC 716.5.3
CBC Table 803.11
Occupancy A-3 B M R-2 S-2A-3 N 1 1 1 NB ---- N N 1 1M ---- ---- N 1 1
R-2 ---- ---- ---- N 1S-2 ---- ---- ---- ---- N
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CBC Table 508.4
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Floor Area (ft2) Type I-A (ft2) Type II-A (ft2)First 33,100 UL --
Second 17,760 -- 72,000Third 17,800 -- 72,000
Height (ft) Type I-A (ft) Type II-A (ft)65 UL 85
Floor OccupancyFirst Assembly (A-3); Business (B); Mercantile (M); Storage (S-2)
Second โ Fifth Residential (R-2)
CBC Table 504.3
CBC Table 506.2
Wet Pipe Automatic Sprinkler and Standpipe Risersโฆ Sprinkler โ 6โโฆ Standpipe โ 4โ
Hazard Classificationโฆ Light (LH)โฆ Ordinary I and II (OH-1/OH-2)
Preaction System
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Occupancy Density (gpm/ft2) Area (ft2) HSA (gpm) Duration (min)
LH 0.085 2150 100 30
OH-1 0.15 1075 250 60-90
OH-2 0.195 1606 250 60-90
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CBC 11.2.3.3.1-11.2.3.3.4
โThe water supply requirements for sprinklers only shall be based upon the room that creates the greatest demand.โ
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LH - 8 sprinklers
Water SupplyLH - 5 sprinklers
OH2 โ 16 Sprinklers
Two Fire Alarm Control Units (FACU) Addressable Signaling and Notification Line Circuits โ Class B
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Shutdown HVAC Close fire/smoke dampers Release door holders
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Smoke Control
FloorPower (AH) 1 2 3 4 5
Required 60 3 3 3 3Provided 70 7 7 7 7
Secondary Power
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First Floor
Second Floor
Type of Room Occupancy Classification Occupant Load Factor (ft2/occupant)
Study Areas A-3 15
Offices B 100
Market M 60
Dwelling Units R-2 200
Storage/Service S-2 300
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๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐ ๐ฟ๐ฟ๐ฟ๐ฟ๐๐๐ฟ๐ฟ =๐ด๐ด๐ด๐ด๐ด๐ด๐๐ ๐ฟ๐ฟ๐๐ ๐ ๐ ๐ฟ๐ฟ๐ฟ๐ฟ๐ ๐ (๐๐๐๐2)
๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐๐ ๐ฟ๐ฟ๐ฟ๐ฟ๐๐๐ฟ๐ฟ ๐น๐น๐๐๐๐๐๐๐ฟ๐ฟ๐ด๐ด ( โ๐๐๐๐2 ๐ฟ๐ฟ๐๐๐๐๐๐๐๐๐๐๐๐๐๐)
Floor Occupant Load (persons)
First 40
Second 60
Third 60
Fourth 60
Fifth 60
CBC Table 1004.1.2
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Occupancy Travel Distance (ft)
A-3, M, R-2 250
B 300
S-2 400
Width (in) Egress Capacity (in./person) Egress Capacity (persons)
Residence Doors 35 0.2 175
Elevator Doors 42.5 0.2 213
Stairway Door 35 0.2 175
Stairs 45.5 0.3 152
Corridors 59 0.2 295Occupancy Dead End (ft)
B, M, R-2, S-2 50
CBC Table 1017.2
CBC Table 1020.4
CBC Table 1005.3.1/1005.3.2
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Occupancy Common Path (ft)
A, M 75
B 100
R-2 125
S-2 100
CBC Table 1006.2.1
Structural
Suppression
Alarm and Detection
Egress
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RSET vs ASET
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SFPE Handbook Figure 59.16
Post Office/Market Residential Unit Business Offices
Flammable Liquid Pool Fire Furniture Fire
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CO โ 1,200 ppm x min
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Heat Flux โ 2.5 kW/m2 (0.22 Btu/ft2)
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Visibility โ 4 m (13 ft.)
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Central Stairway
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Common Ignitable Liquids used as AccelerantsAcetone (lacquers, varnishes, nail polish remover)Ethyl Alcohol (alcoholic beverages, antifreezes)Isopropyl Alcohol (lacquers, rubbing alcohol, lotions)
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SFPE Handbook Table A.39
0
500
1000
1500
2000
2500
0 10 20 30 40 50 60 70 80 90 100
Hea
t Rel
ease
Rat
e (k
W)
Time (s)
Acetone Pool Fire
Pool fireNo growth phase
Qโ*A = Q โ 1058 kW/m2 * (1.4 m)2 = 2073 kW
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Maintain Tenability? Time (s)CO Concentration Yes --Thermal Radiation Yes --
Visibility Yes --
Study Room
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SFPE Handbook Table A.39
0
10
20
30
40
50
60
70
80
90
0 20 40 60 80 100 120
Hea
t Rel
ease
Rat
e (k
W)
Time (s)
GM27 Polyurethane
Q = ฮฑt2ฮฑ = 0.047 kW/s2
0
20
40
60
80
100
120
140
160
0 100 200 300 400 500 600 700
Hea
t Rel
ease
Rat
e (k
W)
Time (s)
GM27 Polyurethane
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Maintain Tenability? Time (s)
CO Concentration Yes --
Thermal Radiation Yes --
Visibility Yes --
Occupant characteristics Pre-evacuationโฆ 3 minutes
Movementโฆ 4 minutes
RSETโฆ Safety Factor 1.5โฆ Total 10.5 minutes
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SFPE Handbook Table 64.4
SFPE Handbook Figure 58.1
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Stairway
Study RoomImmediate Exposure Last Person
Central 185 s 230 sWest 195 s 237 s
Immediate Exposure Last PersonSecond 239 s 248 sThird 196 s 237 s
Fourth 211 s 269 sFifth 185 s 239 s
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Ignition at t = 0 s Detector activation at t = 15 s Alarm activation at t = 25 s Last person exits at t = 294 s
(๐๐๐๐๐ ๐ ๐ด๐ด๐๐๐๐๐๐๐๐๐๐๐๐+๐๐๐๐๐ ๐ ๐ด๐ด๐๐๐๐๐๐๐๐๐๐ + ๐๐๐๐๐ ๐ ๐ด๐ด๐๐๐๐๐๐๐ก๐ก๐๐๐๐) โ ๐๐๐๐๐๐๐ด๐ด๐๐๐๐ ๐น๐น๐๐๐๐๐๐๐ฟ๐ฟ๐ด๐ด = ๐ ๐ ๐๐๐ ๐ ๐๐15๐ ๐ + 10๐ ๐ + 269๐ ๐ โ 1.5 = 440๐ ๐
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Ignition at t = 0 s Detector activation at t = 79 s Alarm activation at t = 89 s Last person exits at t = 326 s
(๐๐๐๐๐ ๐ ๐ด๐ด๐๐๐๐๐๐๐๐๐๐๐๐+๐๐๐๐๐ ๐ ๐ด๐ด๐๐๐๐๐๐๐๐๐๐ + ๐๐๐๐๐ ๐ ๐ด๐ด๐๐๐๐๐๐๐ก๐ก๐๐๐๐) โ ๐๐๐๐๐๐๐ด๐ด๐๐๐๐ ๐น๐น๐๐๐๐๐๐๐ฟ๐ฟ๐ด๐ด = ๐ ๐ ๐๐๐ ๐ ๐๐79๐ ๐ + 10๐ ๐ + 237๐ ๐ โ 1.5 = 490๐ ๐
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Central Stairway
Study Room
440 s < unknown (> 600 s)
490 s < unknown (> 600 s)
More Modelling Means of Egress Investigate switching out HD for SD
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Questions