Means of Egress Survey and Evacuation Time Calculation: Building Number 9, Bansomdejchaopraya Rajabhat University

Abstract

The aims of this research are survey a means of egress and evacuation time calculation based on hydraulic flow analogy at building number 9 of

Bansomdejchaopraya Rajabhat University, Bangkok, which has 10 floors. This reinforced concrete structure building has usage area of 8,497 square meters following to the Thai ministerial regulation No. 33 (BE.2535) and NFPA 101.

The results showed that the means of egress was do not qualify under a regulation no. 33 (BE.2535) and NFPA 101 with the issue of a fire escapes, fire alarm system and protection system. However, the evacuation time of fire stairway number 1 and 2 were 19.9 and 23 minutes, respectively. So that, the evacuation time of this building from 10^th to 1^st floor in 95% CI are 19.31-23.58 minutes with a maximum flow rate (Fc), travel speed (S), travel distance between floor (TD) and travel time per floor (TT) are 0.898 person per second, 0.535 meter per second, 13.39 meter and 25 second, respectively. That based on the criteria of the Thai ministerial regulation No. 33 (BE.2535), issued in accordance with the building control act, BE 2522, section 2; ventilation systems, electrical systems and fire protection systems. In conclusion, the factors of evacuation time are the building’s occupant load, the width of means of egress component such as corridor, exit door, stairway and stair riser and tread size.