5 Calculation of tF , tdeck and tstair
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1238 – Guidelines for Evacuation Analysis for New and Existing Passenger Ships – (30 October 2007) - Annex 1 - Guidelines for a Simplified Evacuation Analysis for New and Existing Passenger Ships - Appendix 2 - Example of Application - 5 Calculation of tF, tdeck and tstair

5 Calculation of tF , tdeck and tstair

  5.1 For case 1:

Item Persons N Length L (m) Calculated flow Fc (p/s) Speed S (m/s) Flow time tf (s) tf = NI Fc Deck or stairs time, tdeck , tstairs T = L/S Entering
Deck 5 – corridor 1 11 13 0.77 1.03 14.3 12.6 Door 1
Deck 5 – corridor 2 12 20 0.65 1.14 18.3 17.6 Door 1
Deck 5 – corridor 3 8 9.5 0.77 1.04 10.4 9.2 Door 2
Deck 5 – corridor 4 11 20 0.63 1.16 17.4 17.3 Door 1
Deck 5 – door 1 34 N.A. 1.17 N.A. 29.1 N.A. Stair A
Deck 5 – door 2 8 N.A. 0.77 N.A. 10.4 N.A. Stair A
Deck 5 – stair A 42 4.67 1.188 0.44 35.4 10.6 Deck 6
Deck 6 – corridor 1 11 13 0.77 1.03 14.3 12.6 Door 1
Deck 6 – corridor 2 12 20 0.65 1.14 18.3 17.6 Door 1
Deck 6 – corridor 3 8 9.5 0.77 1.04 10.4 9.2 Door 2
Deck 6 – corridor 4 11 20 0.63 1.16 17.4 17.3 Door 1
Deck 6 – door 1 34 N.A. 1.17 N.A. 29.1 N.A. Stair A
Deck 6 – door 2 8 N.A. 0.77 N.A. 10.4 N.A. Stair A
Deck 6 – stair A 84 4.67 1.188 0.44 70.7 10.6 Deck 7
Deck 6 – corridor 5 11 13 0.77 1.03 14.3 12.6 Door 3
Deck 6 – corridor 6 12 20 0.65 1.14 18.3 17.6 Door 4
Deck 6 – door 3 11 N.A. 0.77 N.A. 14.3 N.A. Stair B
Deck 6 – door 4 12 N.A. 0.65 N.A. 18.3 N.A. Stair B
Deck 6 – stair B 23 4.67 1.188 0.44 19.4 10.6 Deck 7
Deck 7 – corridor 1 4 6 0.69 1.11 5.8 5.4 Stair C
Deck 7 – corridor 2 4 9 0.58 1.2 6.9 7.5 Corridor 7
Deck 7 – corridor 3 6 15 0.52 1.2 11.5 12.5 Corridor 8
Deck 7 – corridor 4 4 6 0.69 1.11 5.8 5.4 Stair C
Deck 7 – corridor 5 6 14 0.56 1.2 10.8 11.7 Corridor 7
Deck 7 – corridor 6 2 15 0.17 1.2 11.5 12.5 Corridor 8
Deck 7 – corridor 8 92 9 1.88 1.09 48.9 8.2 Corridor 7
Deck 7 – corridor 7 125 11 3.12 0.67 40.1 16.4 Stair C
Deck 7 – stair C 133 4.67 1.232 0.44 108 10.6 Deck 8
Deck 11– corridor 1 55 36 1.09 0.75 50.7 48.2 Door 1
Deck 11– corridor 2 55 36 1.09 0.75 50.7 48.2 Door 2
Deck 11 – door 1 55 N.A. 1.09 N.A. 50.7 N.A. Stair C
Deck 11 – door 2 55 N.A. 1.09 N.A. 50.7 N.A. Stair C
Deck 11 – stair C 110 4.67 2.17 0.81 50.7 5.8 Deck 10
Deck 10– corridor 1 48 36 1 0.83 48.2 43.5 Door 1
Deck 10– corridor 2 48 36 1 0.83 48.2 43.5 Door 2
Deck 10 – door 1 48 N.A. 1 N.A. 48.2 N.A. Stair C
Deck 10 – door 2 48 N.A. 1 N.A. 48.2 N.A. Stair C
Deck 10 – stair C 206 4.67 3.08 0.55 66.9 8.5 Deck 9
Deck 9 – corridor 1 55 36 1.09 0.74 50.7 48.4 Door 1
Deck 9 – corridor 2 55 36 1.09 0.74 50.7 48.4 Door 2
Deck 9 – door 1 55 N.A. 1.09 N.A. 50.7 N.A. Stair C
Deck 9 – door 2 55 N.A. 1.09 N.A. 50.7 N.A. Stair C
Deck 9 – stair C 316 4.67 3.08 0.55 102.6 8.5 Deck 8

  5.2 For case 2: since in this particular arrangement there are no corridors, the deck time is zero.

Item Persons N Length L (m) Calculated flow Fc (p/s) Speed S (m/s) Flow time tf (s) tf = NI Fc Deck or stairs time, tdeck , tstairs T = L/S Entering
Deck 6 – door A 100 N.A. 1.3 N.A 76.9 N.A. Stair A
Deck 6 – door B 100 N.A. 1.3 N.A. 76.9 N.A. Stair B
Deck 6 – door C PS 134 N.A. 1.76 N.A. 76.4 N.A. Stair C
Deck 6 – door C SB 135 N.A. 1.76 N.A. 76.9 N.A. Stair C
Deck 6 – stair A 100 4.67 1.23 0.44 81.2 10.6 Deck 7
Deck 6 – stair B 100 4.67 1.23 0.44 81.2 10.6 Deck 7
Deck 6 – stair C 269 4.67 2.82 0.44 95.5 10.6 Deck 7
Deck 7 – door A 170 N.A. 2.21 N.A 76.9 N.A. Stair A
Deck 7 – door B 170 N.A. 2.21 N.A. 76.9 N.A. Stair B
Deck 7 – door C PS 65 N.A. 1.17 N.A. 55.6 N.A. Stair C
Deck 7 – door C SB 64 N.A. 1.17 N.A. 54.7 N.A. Stair C
Deck 7 – stair A 270 4.67 1.8 0.44 149.7 10.6 Deck 8
Deck 7 – stair B 270 4.67 1.8 0.44 149.7 10.6 Deck 8
Deck 7 – stair C 398 4.67 2.82 0.44 141.3 10.6 Deck 8
Deck 8 – door A 270 N.A. 1.8 N.A. 149.7 N.A. Embarkation
Deck 8 – door B 270 N.A. 1.8 N.A. 149.7 N.A. Embarkation
Deck 9 – door PS 100 N.A. 1.3 N.A. 76.9 N.A. Stair C
Deck 9 – door SB 100 N.A. 1.3 N.A. 76.9 N.A. Stair C
Deck 9 – stair C 200 4.67 2.6 0.78 76.9 6 Deck 8
Parent topic: Appendix 2 - Example of Application
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